阅读说明：本技术 有机硅烷涂布组合物 (Organosilane coating compositions ) 是由 B·J·张 E·阿尔特诺克 P·L·老卡钦斯 于 2019-05-14 设计创作，主要内容包括：于一方面,提供可固化涂布组合物,其包含(i)一个或多个有机硅烷；及(ii)包含经取代的丙烯酸酯部分、经取代的丙烯酰胺部分、或经取代的乙烯醚部分的一个或多个化合物。所述组合物能在多种基材表面上制造强力外涂布层。(In one aspect, a curable coating composition is provided that includes (i) one or more organosilanes; and (ii) one or more compounds comprising a substituted acrylate moiety, a substituted acrylamide moiety, or a substituted vinyl ether moiety. The composition is capable of producing a strong overcoat on the surface of a wide variety of substrates.)

1. A coated substrate comprising:

a substrate;

a coating composition on the substrate, the coating composition comprising:

(i) one or more organosilanes; and

(ii) one or more compounds comprising a substituted acrylate moiety, a substituted acrylamide moiety, or a substituted vinyl ether moiety.

2. The substrate of claim 1, wherein the coating composition further comprises a curing agent.

3. The substrate of claim 1, wherein the coating composition further comprises a photoactive agent.

4. The substrate of any one of claims 1 to 3, wherein the coating composition comprises one or more hydroxy acrylate compounds.

5. The substrate of any one of claims 1 to 4, wherein the coating composition comprises 1) one or more compounds comprising a single acrylate moiety and 2) one or more multi-acrylate compounds.

6. The substrate of any one of claims 1 to 5, wherein the one or more reactive organosilanes comprises one or more siloxanes.

7. The substrate of any one of claims 1 to 6, wherein the one or more reactive organosilanes comprises one or more silsesquioxanes.

8. The substrate of any one of claims 1 to 7, wherein the one or more organosilanes comprise units of the following formulae (I) and/or (II):

wherein, in each of the formulas (I) and (II), L¹Is a linking group; each R is independently hydrogen or a non-hydrogen substituent; and each y is a positive integer.

9. A substrate according to any one of claims 1 to 8, wherein the one or more organosilanes comprises one or more carbamate groups.

10. The substrate of any one of claims 1 to 9, wherein the one or more organosilanes comprises units of formula III:

wherein, in formula (III): each of R and R¹Are the same or different and may be hydrogen or a non-hydrogen substituent; l is²Is a linking group; and x is a positive integer.

11. The substrate of any one of claims 1 to 10, wherein the one or more organosilanes does not comprise polyhedral oligomeric silsesquioxane (POSS) moieties.

12. The substrate of any one of claims 1 to 10, wherein the one or more organosilanes comprises polyhedral oligomeric silsesquioxane (POSS) moieties.

13. The substrate of any one of claims 1 to 12, wherein the one or more reactive organosilanes is not substituted with fluorine.

14. The substrate of any one of claims 1 to 12, wherein the coating composition is at least substantially fluorine-free.

15. The substrate of any one of claims 1 to 14, wherein the coating composition does not comprise an additional solvent component.

16. The substrate of any one of claims 1 to 15, wherein the coating composition further comprises one or more antimicrobial agents.

17. The substrate of any one of claims 1 to 16, wherein the coating composition further comprises one or more colorants or fluorescers.

18. The substrate of any one of claims 1 to 17, wherein the (i) one or more organosilanes and the (ii) one or more compounds are treated to produce a hardened coating on the substrate.

19. The substrate of claim 18, wherein the hardened coating layer has a hardness of at least 5H on an cPI film substrate and/or a hardness of at least 7H on a glass substrate.

20. The substrate of claim 19, wherein the hardened composition coating layer does not significantly degrade under static bending test.

21. The substrate of any one of claims 1 to 20, wherein the coating composition is a top layer on the substrate.

22. The substrate of any one of claims 1 to 21, wherein the substrate comprises glass, plastic, ceramic, or metal, or a combination thereof.

23. The substrate of any one of claims 1 to 22, wherein the substrate is a display.

24. A method for providing a coated substrate comprising:

applying a layer of a coating composition to the substrate,

wherein the coating composition comprises:

(i) one or more organosilanes; and

(ii) one or more compounds comprising a substituted acrylate moiety, a substituted acrylamide moiety, or a substituted vinyl ether moiety.

25. The method of claim 24, further comprising hardening the applied coating layer.

26. The method according to claim 24 or 25, wherein the applied coating layer is hardened by heat treatment or exposure to activating radiation.

27. The method of any one of claims 24 to 26, wherein the coating composition further comprises a curing agent.

28. The method of any one of claims 24 to 27, wherein the coating composition further comprises a photoactive agent.

29. The method according to any one of claims 24 to 28, wherein the coating composition comprises one or more hydroxy acrylate compounds.

30. The method of any one of claims 24 to 28, wherein the coating composition comprises 1) one or more compounds comprising a single acrylate moiety and 2) one or more multi-acrylate compounds.

31. The method of any one of claims 24 to 30, wherein the one or more reactive organosilanes comprises one or more siloxanes.

32. The method of any one of claims 24 to 30, wherein the one or more reactive organosilanes comprises one or more silsesquioxanes.

33. The method of any one of claims 24 to 30, wherein one or more organosilanes comprises units of the following formulae (I) and/or (II):

wherein in each of the formulas (I) and (II), L¹Is a linking group; each R is independently hydrogen or a non-hydrogen substituent; and each y is a positive integer.

34. The method of any one of claims 24-33, wherein the one or more organosilanes comprises one or more carbamate groups.

35. The method of any one of claims 24 to 34, wherein the one or more organosilanes comprises units of formula III:

wherein in formula (III): each of R and R¹Are the same or different and may be hydrogen or a non-hydrogen substituent; l is²Is a linking group; andx is a positive integer.

36. A method according to any one of claims 24 to 35, wherein the one or more organosilanes comprises polyhedral oligomeric silsesquioxane (POSS) moieties.

37. The method of any one of claims 24 to 35, wherein the one or more organosilanes does not comprise polyhedral oligomeric silsesquioxane (POSS) moieties.

38. The method of any one of claims 24 to 37, wherein the one or more reactive organosilanes is not substituted with fluorine.

39. The method of any one of claims 24 to 38, wherein the coating composition is at least substantially fluorine-free.

40. The method of any one of claims 24 to 39, wherein the coating composition does not comprise an additional solvent component.

41. The method according to any one of claims 24 to 40, wherein the coating composition further comprises one or more antimicrobial agents.

42. The method according to any one of claims 24 to 41, wherein the coating composition further comprises one or more colorants or fluorescers.

43. The method of any one of claims 24 to 42, wherein the coating layer is a top layer of the coated substrate.

44. The method of any one of claims 24-43, wherein the substrate comprises glass, plastic, ceramic, or metal, or a combination thereof.

45. The method of any one of claims 24 to 44, wherein the substrate is a display.

46. A curable coating composition comprising:

(i) one or more organosilanes; and

(ii) one or more compounds comprising a substituted acrylate moiety, a substituted acrylamide moiety, or a substituted vinyl ether moiety.

47. The composition of claim 46, wherein the composition further comprises a curing agent.

48. The composition of claim 46 or 47, wherein the composition further comprises a photoactive agent.

49. A composition according to any one of claims 46 to 48, wherein the composition comprises one or more hydroxy acrylate compounds.

50. The composition of any one of claims 46 to 49, wherein the coating composition comprises 1) one or more compounds comprising a single acrylate moiety and 2) one or more multi-acrylate compounds.

51. The composition of any one of claims 46 to 50, wherein the one or more reactive organosilanes comprises one or more siloxanes.

52. The composition of any one of claims 46 to 51, wherein the one or more reactive organosilanes comprises one or more silsesquioxanes.

53. The composition of any one of claims 46 to 52, wherein one or more organosilanes comprises units of the following formulae (I) and/or (II):

wherein in each of the formulas (I) and (II), L¹Is a linking group; each R is independently hydrogen or a non-hydrogen substituent; and each y is a positive integer.

54. The composition of any one of claims 46 to 53, wherein the one or more organosilanes comprises one or more carbamate groups.

55. A composition according to any one of claims 46 to 54, wherein the one or more organosilanes comprises units of formula III:

wherein in formula (III): each of R and R¹Are the same or different and may be hydrogen or a non-hydrogen substituent; l is²Is a linking group; and x is a positive integer.

56. The composition of any one of claims 46 to 55, wherein the one or more organosilanes comprises polyhedral oligomeric silsesquioxane (POSS) moieties.

57. The composition of any one of claims 46 to 55, wherein the one or more organosilanes does not comprise polyhedral oligomeric silsesquioxane (POSS) moieties.

58. The composition of any one of claims 46 to 57, wherein the one or more reactive organosilanes is not substituted with fluorine.

59. The composition of any one of claims 46 to 58, wherein the coating composition is at least substantially fluorine-free.

60. The composition of any one of claims 46 to 59, wherein the coating composition does not comprise an additional solvent component.

61. The composition according to any one of claims 46 to 60, wherein the coating composition further comprises one or more antimicrobial agents.

62. The composition of any one of claims 46 to 61, wherein the coating composition further comprises one or more colorants or fluorescers.

63. A polymer comprising the structure of formula (IIIA):

wherein, in formula (IIIA): l is¹And L²Are the same or different linking groups; each R is the same or different and may be hydrogen or a non-hydrogen substituent; and x and y are each the same or different positive integers.

64. A coating composition comprising one or more polymers of claim 63.

65. The coating composition of claim 64, wherein the composition further comprises a curing agent and/or a photoactive agent.

Technical Field

The present invention relates to organosilane compositions. Preferred compositions provide a strong overcoat on a variety of substrate surfaces.

Background

Substrates having a treated surface layer are used in various fields. For example, in the transportation industry, such as automobiles, boats, airplanes, etc., exterior component surfaces, such as exterior panels, window glass, rear view camera lenses, or mirror glass, or interior component surfaces, such as display surface materials, instrument panels, or other items, it is desirable to easily clean and maintain the integrity of their surfaces. In the electronics industry, the treated surfaces are used in cell phones, electronic device displays, and the like. And in the construction and interior design industries, treated surfaces are used in windows, doors, trim panels, furniture, and household appliances, such as refrigerators, ovens, ranges, and the like. In retail sectors, the treated surfaces are used in sportswear, shoes, etc.

In particular, electronic devices are often treated with protective coatings to reduce scratches and other abrasive damage. For example, display devices used in mobile devices such as telephones and tablets typically include a lens element of glass or plastic. Certain coating systems are reported to treat the lens elements to reduce abrasive damage. Reference is made to US 2016/0085370.

It is desirable to have a novel coating system.

Disclosure of Invention

The inventors now provide novel organosilane compositions. The preferred compositions can be used as coating layers on a wide variety of substrates, including as permanent surface coating layers. Particularly preferred compositions can have significant hardness as well as substantial flexibility.

For many applications, the inventors have appreciated that permanent coating layers need to be both hard and flexible.

The inventors have now surprisingly found that the preferred compositions disclosed herein are capable of providing cured coatings having both significant hardness and flexibility. For example, refer to the results set forth in the examples below.

More specifically, preferred coating compositions comprise (i) one or more organosilanes; and (ii) one or more compounds comprising a substituted acrylate moiety, a substituted acrylamide moiety, or a substituted vinyl ether moiety.

Particularly preferred organosilanes include polymeric materials comprising siloxane repeating units, including repeating units comprising multiple silicon atoms, such as di-and meta-units of the following formulae (I) and (II):

wherein in each of the formulas (I) and (II), L¹Is a linking group, such as a chemical bond; optionally substituted alkylene, e.g., (-CH)₂-)_1-8(ii) a Or optionally substituted alkylene, e.g. (CH)₂W)_1-8Wherein W is N, O or S; each R is independently hydrogen or a non-hydrogen substituent, such as optionally substituted alkyl; and y is a positive integer.

In a preferred embodiment, the siloxane provided comprises a urethane group. Also provided are compositions comprising a cured composition comprising one or more of said silicones comprising functional urethane groups.

Preferred organosilanes for use in the present compositions also include higher order polymeric materials that include 2, 3, 4, 5 or more discrete repeating units, i.e., copolymers, terpolymers, tetramers, pentamers, and other higher order materials.

In a particular embodiment, organosilanes comprising one or more carbamate moieties are preferred, such as organosilanes comprising units of the following formula (III):

wherein in formula (III), L²Is a linking group, such as a bond or an optionally substituted alkylene group, e.g., (-CH)₂-)_1-8(ii) a R and R¹Are the same or different and may be hydrogen or a non-hydrogen substituent, such as optionally substituted alkyl; and x is a positive integer.

As discussed, in addition to the organosilane, the present compositions comprise one or more compounds that comprise a substituted acrylate moiety, a substituted acrylamide moiety, and/or a substituted vinyl ether moiety. Compounds containing one or more hydroxy acrylate groups are generally preferred.

In a particularly preferred embodiment, the present compositions can be applied to a substrate as a fluid coating without the use of a separate casting solvent. Thus, for example, the organosilane component can be dissolved or dispersed with a component comprising one or more substituted acrylate, acrylamide, or vinyl ether groups. The fluid composition can be applied by any suitable means, such as dip coating, spin coating, or spray coating onto the substrate, followed by curing, without a separate step of removing the solvent.

In certain preferred embodiments, one or more organosilanes does not include fluorine substitution. In particular embodiments, the coating composition is at least substantially free of fluorine, i.e., less than 3, 2, 1, or 0.5 weight percent fluorine, based on the total weight of the composition.

In certain embodiments, one or more organosilanes of the coating composition may comprise polyhedral oligomeric silsesquioxane (POSS) moieties. In other embodiments, the one or more organosilanes does not include any POSS moieties.

In particular embodiments, the coating compositions of the present invention may include one or more other materials, such as one or more antimicrobial agents, which may provide a substantially microbe-free or antimicrobial coating of the applied composition. Other preferred additives include one or more colorants or fluorescing agents that provide the desired visible characteristics to the applied coating composition coating.

The present compositions can be advantageously used on a wide range of substrates such as glass, plastic, wood, cellulosic products, metal surfaces such as aluminum, steel, brass, and surfaces with various types of applied coatings, including paints. The coating system is particularly applicable to a variety of polymeric substrates such as polycarbonate, polystyrene, polyester. The substrate may be, for example, a display, including a display for a mobile device.

In certain embodiments, the composition will become the outermost surface layer on the substrate. In other words, in the embodiments, the additional layer is not coated over the layer of the present coating composition.

In particular embodiments, the applied composition coating layer, including subsequent curing, will be substantially transparent, e.g., the coating layer will transmit 60%, 70%, 80%, 90% or more of incident visible light.

As discussed, the preferred hardened coating or cured coating of the present composition may have a significant hardness, such as a hardness of at least 4H, 5H, or 6H on cPI (polyimide) film substrates, and/or a hardness of at least 7H, 8H, or 9H on glass substrates. The hardness values as referred to herein may be determined using the ASTM D3363 standard test method as illustrated hereinafter in example 6. The hardness values are preferably provided as relatively thin layers of the coating layer of the composition, such as a coating layer of the cured composition having a thickness of 50 to 400 nm or 100 to 300 nm.

The preferred hardened or cured coatings of the present compositions may also have significant flexibility. For example, a preferred cured composition layer (including a cured composition coating layer having a thickness of <1 micron) will pass the static bend test as illustrated hereinafter in example 5 without detectable and without noticeable or significant delamination or cracking. As referred to herein, no noticeable or significant degradation or cracking indicates that the intended effect of the coating layer is not compromised.

As referred to herein, the static bending test comprises: 1) folding the cured composition coating layer (composition coated on a foldable substrate, such as the polyimide of example 5 below, the cured composition layer having a thickness of <1 micron) at 180 degrees; 2) storing the folded sample at 70 ℃ and-40 ℃ for at least 3 days; and 3) after the pot life, visually inspecting and using a microscope to inspect the coating for degradation, such as delamination or cracking.

Methods for providing a layer of the coating composition are also provided. Further provided are substrates, such as mobile devices or display elements, having the compositions of the invention coated thereon.

Other embodiments of the invention are discussed below.

Drawings

Fig. 1A to 1B show ASTM D3359 standard test method for rating adhesion (fig. 1A) and 50 x magnification (fig. 1B) by tape test with 1 mm square cross cut.

Fig. 2A to 2B show the results of the static bending test.

Fig. 3 shows a schematic diagram of a test configuration of pencil hardness. The inset shows a pencil lead edge with neither chips nor nicks.

Fig. 4 shows a graphical representation of the pencil hardness test results for test pieces coated on glass.

Detailed Description

Organosilanes

As discussed, preferred organosilanes include polymeric materials comprising siloxane repeating units, including repeating units comprising multiple silicon atoms. The bi-units and the meta-units of the formulae (I) and (II) below are particularly suitable:

wherein in each of the formulas (I) and (II):

each R is independently hydrogen or a non-hydrogen substituent, such as optionally substituted alkyl, e.g., optionally substituted C₁-C₁₂、C₁-C₈、C₁-C₄Or C₁-C₂An alkyl group;

L¹is a linking group, such as a chemical bond; optionally substituted alkylene, e.g. optionally substituted C₁-C₁₂、C₁-C₈、C₁-C₄Or C₁-C₂An alkylene group; or optionally substitutedA heteroalkylene group, e.g., a 2-to 10-membered, 2-to 8-membered, 2-to 4-membered, or 2-to 3-membered heteroalkylene group; and

y is a positive integer.

As also discussed, preferred organosilanes may include carbamate substitutions. In a particular embodiment, organosilanes comprising one or more units of the following formula (III) are provided:

wherein in formula (III):

each of R and R¹Are the same or different and may be hydrogen or a non-hydrogen substituent, such as optionally substituted alkyl, e.g. optionally substituted C₁-C₁₂、C₁-C₈、C₁-C₄Or C₁-C₂An alkyl group;

L²is a linking group, such as a chemical bond; optionally substituted alkylene, e.g. optionally substituted C₁-C₁₂、C₁-C₈、C₁-C₄Or C₁-C₂An alkylene group; or an optionally substituted heteroalkylene group, e.g., a 2-10-, 2-8-, 2-4-, or 2-3-membered heteroalkylene; and

x is a positive integer.

Particularly preferred are compositions comprising one or more units of formula (I) and/or (II) above and further comprising a carbamate-substituted organosilane. For example, in a preferred embodiment, the organosilane may comprise a structural formula of formula (IIIA) or (IIIB):

wherein in the formulae (IIIA) and (IIIB), L¹、L²R, R', x and y are as defined above for formulas I, II and III.

Suitable organosilanes are commercially available or can be conveniently prepared. For example, one or more silanols or silyl ethers may be reacted to provide the appropriate organosilane. Preferred polymeric materials such as formulas (IIIA) and (IIIB) can be conveniently synthesized according to the following reaction scheme 1:

as depicted in equation 1, a bis-or tris-silanol or silyl ether is reacted with an isocyanato-silanol or isocyanato-silyl ether reagent under basic conditions to provide the depicted copolymer a. In this equation 1, each R and R' is independently hydrogen or a non-hydrogen substituent, such as an optionally substituted alkyl, e.g., optionally substituted C₁-C₁₂、C₁-C₈、C₁-C₄Or C₁-C₂An alkyl group. L is¹And L²Are the same or different linking groups, such as chemical bonds; optionally substituted alkylene, e.g. optionally substituted C₁-C₁₂、C₁-C₈、C₁-C₄Or C₁-C₂An alkylene group; or an optionally substituted heteroalkylene group, e.g., a 2-10-, 2-8-, 2-4-, or 2-3-membered heteroalkylene; x and y are the same or different positive integers, e.g., x and y may each suitably be 1 to 100; and p is 0 (to provide a bis-compound, such as a group of formula (I) above) or 1 (to provide a tris-compound, such as a group of formula (II) above).

Preferably, each R and R' is independently hydrogen, or unsubstituted C₁-C₄Alkyl groups, such as methyl and ethyl. Preferably, L¹And L²Independently each occurrence is a bond, unsubstituted C₁-C₄Alkyl groups, such as methylene and ethylene.

The organosilane used in the present coating composition is suitablyThere can be wide variation in molecular weight and polydispersity. Suitable organosilanes include those having an M of from about 300 to about 10,000, more typically from about 300 to about 20,000_wAnd a molecular weight distribution of about 3 or less, more typically about 2 or less.

Reference herein to "acrylate" groups or compounds, including C wherein the acrylate vinyl group is optionally substituted_1-8Alkyl or other groups. Thus, the term acrylate includes methacrylate.

Unless otherwise indicated, the term "alkylene" by itself or as part of another substituent denotes a divalent radical derived from an alkyl radical, as exemplified (but not limited to), -CH₂CH₂CH₂CH₂-. Typically, the alkyl (or alkylene) group will contain 1 to 24 carbon atoms, or more typically 1 to 12, 1 to 8, or 1 to 4 carbon atoms.

Unless otherwise indicated, the term "heteroarylene" by itself or as part of another substituent denotes a divalent radical derived from a heteroalkyl radical, as exemplified (but not limited to), -CH₂CH₂-O-CH₂CH₂-and-CH₂-O-CH₂-CH₂-NH-CH₂-. As for the alkylene group, the heteroatom (N, O, S) can also occupy either or both of the chain ends (e.g., alkyleneoxy, alkylenedioxy, alkyleneamino, alkylenediamino, and the like).

As discussed herein, various materials and substituents, including groups of formulae (I), (II), (III), (IIIA), and (IIIB) which may be "optionally substituted," may be suitably substituted at one or more available positions with: for example, halogen (F, Cl, Br, I); a cyano group; a nitro group; a hydroxyl group; an amino group; alkyl radicals such as C_1-20Alkyl or C_1-8An alkyl group; alkenyl radicals such as C_2-8An alkenyl group; alkylamino radicals such as C_1-20Alkylamino or C_1-8An alkylamino group; thioalkyl radicals such as C_1-20Sulfanyl or C_1-8A sulfanyl group; carbocyclic ring systems aryl such as phenyl, naphthyl, benzyl, and the like.

Coating composition

As discussed above, one or more organosilanes are used in combination with one or more discrete compounds comprising a substituted acrylate moiety, a substituted acrylamide moiety, or a substituted vinyl ether moiety.

In certain embodiments, preferred components comprising substituted acrylate, acrylamide, or vinyl ether moieties may be non-polymeric (no repeat units), and/or have a molecular weight of less than 1500, or less than 1000, 800, 700, 600, 500, or 400. In other embodiments, polymeric materials may be suitable.

Specific components containing substituted acrylate, acrylamide, or vinyl ether moieties include, for example, 2-hydroxyethyl methacrylate; hydroxymethyl methacrylate, hydroxypropyl methacrylate, 2-aminoethyl methacrylate, glycidyl methacrylate, poly (ethylene glycol) methacrylate, 2-isocyanatoethyl methacrylate; n-hydroxyethyl acrylamide; n- (2-hydroxyethyl) methacrylamide; n- (hydroxymethyl) methacrylamide; n- (hydroxymethyl) acrylamide; 2-aminoethyl methacrylamide; 4-hydroxybutyl vinyl ether. In some embodiments, hydroxyl acrylates (including hydroxyl methacrylates and other alkyl acrylates) are preferred.

Further preferred composition components comprising substituted acrylate, acrylamide or vinyl ether moieties include compounds comprising multiple acrylate groups (polyacrylate compounds), such as diacrylate compounds and triacrylate compounds, e.g., 1, 6-hexanediol diacrylate, 1, 6-hexanediol dimethacrylate, 1, 3-butanediol diacrylate, 1, 4-butanediol diacrylate, 1, 6-hexanediol diacrylate, poly (ethylene glycol) diacrylate, glycerol 1, 3-di-glycerolated diacrylate, bisphenol A ethoxylated diacrylate.

A preferred acrylate material for use in the composition of the present invention that may include multiple acrylate groups is dipentaerythritol pentaacrylate/hexaacrylate (DPPHA or DPHA).

In particular embodiments, a plurality of discrete compounds comprising substituted acrylate, acrylamide, or vinyl ether moieties are used in combination. For example, in certain embodiments, the polyacrylate compound is used in combination with one or more other discrete compounds, such as one or more compounds comprising a single substituted acrylate, acrylamide, or vinyl ether moiety thereof. For certain embodiments, it is preferred to use polyacrylate compounds along with discrete compounds containing a single acrylate group, such as hydroxy acrylate compounds.

Additional composition components comprising substituted acrylate, acrylamide or vinyl ether groups can suitably react to harden the applied coating composition layer. In a preferred embodiment, the additional components will react to form covalent bonds (cross-links) with the components of the composition that may include the one or more organosilanes.

Such hardening of the applied coating composition may suitably take place by heat treatment or exposure to activating radiation. The coating composition may include a curing agent to promote the hardening reaction, for example, a thermal curing agent, which may generate an activator at elevated temperatures; or a photoinitiator compound that enhances the curing agent when exposed to activating radiation. In some embodiments, the photoinitiator compound is preferably used in conjunction with a blanket exposure to ultraviolet light or other activating radiation at room temperature or at elevated temperatures.

A variety of thermal and radiation sensitive curing agents can be used. Suitable photoinitiators include organic chemical agents such as, for example, 2-hydroxy-2-methylpropiophenone: ijia ball (Irgacure)^TM) Dricur (Drocur)^TM) 4,4 '-bis (diethylamino) benzophenone, 2-chlorothio-anthracen-9-one, 2-hydroxy-2-methyl propiophenone, 3-hydroxybenzophenone, and 4' -ethoxyacetophenone.

The coating compositions of the present application may also contain other materials. For example, other optional additives include nanoparticles, such as SiO₂、TiO₂、Al₂O₃、Al(OH)₃、ZnO、Sb₂O₃、Fe₂O₃、CeO₂And the like. Typically, these optional additives will be present in the composition in small concentrations.

Preferred additional coating compositions include antimicrobial agents that can provide coatings that are substantially free of bacteria or other microorganisms. The antimicrobial agent may be an inorganic material or an organic material. See the examples below for preferred agents and amounts for coating compositions.

Preferred additional coating composition agents include microorganisms and/or one or more colorants or fluorescing agents to provide desired visible characteristics to the applied layer of the coating composition. The colorant may also be an organic or inorganic material. See the following examples for exemplary colorants.

Suitably, the composition components may be present in various amounts. For example, the weight ratio of 1) one or more organosilanes to 2) one or more compounds comprising one or more substituted acrylate, acrylamide, or vinyl ether moieties suitably may be a weight ratio of 1:10 to 10:1, more typically 2:8 to 8:2, or 3:7 to 7: 3. In certain embodiments, the weight ratio of 1) one or more organosilanes to 2) one or more compounds comprising one or more substituted acrylate, acrylamide, or vinyl ether moieties suitably may be 4:6 to 6: 4.

When a curing agent is employed, it will typically be present in a relatively small amount, such as less than 10, 5, 4, 3, 2, or 1 weight percent of the total weight of the composition.

When a polyacrylate compound is employed, it will typically be present in a relatively small amount, such as less than 10, 5, 4, 3, 2, or 1 weight percent of the total weight of the composition. As discussed, preferred compositions do not include additional solvent components, but rather the reactive composition components are co-dissolved or dispersed together to provide a fluid solution or fluid mixture. If desired, however, one or more carrier solvents may be utilized to impart the desired viscosity and other characteristics to the composition. One or more organic solvents are generally preferred, such as glycol ethers, such as 2-methoxyethyl ether (diethylene glycol ether), ethylene glycol monomethyl ether, and propylene glycol monomethyl ether; propylene glycol monomethyl ether acetate; lactic acid esters ethyl lactate; propionate esters such as ethyl ethoxy propionate, and methyl-2-hydroxy isobutyrate; and ketones such as methyl ethyl ketone, and 2-heptanone. Blends of solvents, such as blends of two, three or more of the solvents described above, may be suitable. When used, the solvent component may suitably be present in the composition in an amount of from 50 to 90 or 95% by weight, based on the total weight of the composition.

The compositions of the present application are typically manufactured by mixing the composition components, followed by agitation, such as mechanical stirring or sonication, to provide a substantially homogeneous fluid composition. The composition may be applied to the substrate by any suitable method, including spin coating, spray coating, or dip coating.

After application of a coating layer of the composition to a substrate, the layer is typically cured by heat treatment or exposure to ultraviolet light or other activating radiation as discussed. In one embodiment, the coating layer is blanket exposed to ultraviolet radiation for 0.5 to 10 minutes, or until the coating layer is cured as desired. Radiation curing can be at room temperature or at elevated temperatures, such as 30 ℃ to 80 ℃, or higher temperatures as may be desired to effectively harden a particular composition.

Surface and application

There is no particular limitation on the substrate to which the composition of the present application may be applied, for example, substrates including leather, metal, plastic, glass, ceramic, or other inorganic materials, organic materials, or combinations thereof, such as composites, laminates, and the like. Further, the surface of the substrate may be the substrate surface itself, or may be a material surface different from the substrate surface, such as a coated surface of a coated metal plate, or a surface-treated surface of a surface-treated glass. As for the shape of the substrate, it may not necessarily be a flat plate-like shape, and depending on the particular purpose, it may have an optional shape such as a curvature on its entire surface or on a part thereof, such as for side-to-side full screens, mobile phone screens with rounded edges.

The method is used for surface treatment of the base material, and special pretreatment is not needed. However, pretreatment may be performed as necessary. For example, acid treatment using, for example, dilute hydrofluoric acid or hydrochloric acid, alkali treatment using, for example, an aqueous sodium hydroxide solution, or electric discharge treatment by, for example, plasma irradiation may be performed.

In the present invention, a particularly suitable substrate is a substrate made of a transparent material such as leather, glass or plastic, and a suitable article having such a substrate mounted thereon to exercise transparency. Thus, the substrates of the present invention are particularly suitable for use in articles for transportation equipment and articles for use in buildings or the decoration of buildings.

Items for transportation include, but are not limited to, exterior parts of cars, buses, trucks, automobiles, boats, or airplanes such as exterior panels, window glass, mirrors, and display panels; and interior components such as a dashboard. Such an article may consist of only the surface-treated substrate, or may have a surface-treated substrate incorporated therein. For example, the former may be a window glass of an automobile, such as a windshield; and the latter may be a rear view mirror of a vehicle, in which the glass mirror is incorporated inside a housing unit mounted on the outside of the vehicle.

Articles used for transportation include, for example, bodies used in automobiles, buses or trucks, boats and aircraft, window glass such as windshields, side windows, rear windows, and sunroofs, mirrors, and leather upholstery such as seats, hoods, gaskets, and the like.

Also, the article used for building or building finishing may be an article to be attached to a building, or an article already attached to a building, or an article not attached to a building but used within a building; articles for use in buildings include, but are not limited to, furniture or equipment, and base materials such as glass panels.

In particular, it includes a window glass plate, a window glass, a glass plate for a roof, a glass plate for a door, or a door having the glass plate mounted thereon, a glass plate for a compartment, a glass plate for a greenhouse, or a greenhouse having the glass plate, a transparent plastic plate to be used in place of glass, the above-described various articles for buildings (window material and roof material) having the plastic plate incorporated therein, a wall material made of ceramics, cement, metal or other materials, a mirror, furniture and a display shelf having the wall surface or mirror surface, and glass for a showcase.

Such articles may be made solely of the surface-treated substrate, or may have a surface-treated substrate incorporated therein. For example, the former may be a window pane, and the latter may be furniture in which glass is mirror-integrated.

The following examples illustrate the invention.

Example 1: synthesis of a bis-copolymer

Material

A: 1, 2-bis (triethoxysilyl) ethane (Gillett (Gelest) SIB 1817.0, CAS: 16068-37-4); b: 3-isocyanatopropyltriethoxysilane (Gillenst SII 6455.00, CAS: 24801-88-5); c: potassium hydroxide (Sigma-Li-xu (Sigma Aldrich) P1767, CAS:1310-58-3) in deionized water; d: ethanol (Alfa Aesar)33361, 94-96%, CAS: 64-17-5); e: dichloromethane (Aerma Enthar 22917, CAS:75-09-2)

Procedure

As approximately depicted in reaction formula 2 above, in a 100 ml single-necked round-bottomed flask (RBF) equipped with a stir bar, 3-isocyanatopropyltriethoxysilane (B) in an amount of 10.16 g (0.041 mol), 1, 2-bis (triethoxysilyl) ethane (a) in an amount of 1.04 g (2.93 mmol), and 20 ml ethanol (D) were fed in, and the reaction mixture was stirred for 10 minutes. 2 ml of aqueous KOH (C) (10 mg/ml) was added dropwise to the reaction mixture, and the reaction was stirred at ambient temperature for 15 hours. Then, the reaction mixture was transferred to a 100 ml separatory funnel, and 20 ml of dichloromethane was fed. Water was added to the reaction and washed twice. The organic phase is separated and dehydrated over sodium sulfate. The solvent was removed under reduced pressure and a waxy solid product was obtained in an amount of 9.5 g.

Example 2: synthesis of a Ginseng-copolymer

Material

A: 1,1, 2-Ginseng (triethoxysilyl) ethane (Gillenst SIT 8716.6, CAS: 151198-82-2); b: 3-isocyanatopropyltriethoxysilane (Gillenst SII 6455.00, CAS: 24801-88-5); c: potassium hydroxide (Sigma-Li-xu P1767, CAS:1310-58-3) in deionized water; d: ethanol (Elfa 33361, 94 to 96%, CAS: 64-17-5); e: dichloromethane (Aerma Enthar 22917, CAS:75-09-2)

Procedure

As approximately depicted in reaction formula 3 above, in a 1 liter single-necked round-bottomed flask equipped with a stir bar and a dropping funnel, 195 g (0.788 mol) of 3-isocyanatopropyltriethoxysilane (B), 19.4 g (0.0375 mol) of 1,1, 2-ginseng (triethoxysilyl) ethane (a), and 310 ml of ethanol (D) were fed in, and the reaction mixture was stirred for 15 minutes. 38 ml of aqueous KOH (C) (10 mg/ml) was added dropwise to the reaction mixture, and the reaction was stirred at ambient temperature for 15 hours. Then, half of the reaction mixture was transferred to a 500 ml separatory funnel and 200 ml of dichloromethane was fed. The reaction was washed twice with water. The organic phase is separated and dehydrated over sodium sulfate. The solvent was removed under reduced pressure. The other half of the reaction mixture was washed and separated in the same manner. 207 g of waxy solid product are obtained.

¹H NMR(CDCl3，500MHz)：§0.54-0.57(m)、0.59(m)、1.12-1.16(m)、1.49-1.54(m)、3.06-3.09(m)、3.71-3.76(m)、4.85b(s，br)。¹³C NMR(CDCl₃，125.7MHz)§1.43、7.52、1456、18.15、18.20、18.29、23.61、42.82、58.24、58.31、58.35、158.42。²⁹Si NMR(CDCl₃99.3MHz) § 45.42. Calculating C₁₈H₄₁NO₉Si₃C, 43.08: h, 8.64; n, 2.79. The following are found: c, 47.06; h, 9.28; n,5.57.Mn [ g/mol ]]：582,Mw[g/mol]：1095。

Example 3: preparation and use of coating compositions

A coating composition was prepared containing the following specified amounts of materials:

1. siloxane of the tri-copolymer of example 2: 0.4g

2. 2-hydroxyethyl methacrylate: 0.5g

2-hydroxy-2-methylpropiophenone: 0.05g

4.1, 6-Hexane diol diacrylate: 0.05g

These materials were mixed in a vial and sonicated for 10 minutes. The composition is considered solvent-free in that the individual components are miscible with one another without the aid of further solvents. The composition was air-sprayed at 30psi to cPI (copolyimide, Kolon CPI (KOLON CPI)^TM) ) a film. The applied composition coating was uv cured for 2 minutes (400 watts).

Example 4: adhesion test

The adhesion of the cured coating composition of example 4 above was rated by ASTM D3359 "standard test method for evaluating adhesion by tape test".

The coated composition layer was immersed in hot water (80 ℃) for 30 minutes, and taken out of the water. The surface was gently wiped using kimberly low dust wiping paper (Kimwipes) to remove water. Using a 1 mm wide serrated razor blade, perpendicular cuts were made that crossed each other (fig. 1A). A 20 mm wide translucent pressure sensitive tape was applied to the cut area. The tape is removed from the surface. The surface was visually inspected and evaluated based on the classification of the adhesion test results (refer to table 1).

As shown in fig. 1A to 1B, no edge delamination or defects were observed along the cut. The adhesion of the coating layer was classified as 5B (0% or no failure, see table 1). Even after microscopic examination (50 x magnification), no microscopic failures or defects were confirmed along the incision.

Generally, ISO or ASTM classifies coating failures into five categories (0 to 5). The film was rated 0 in 5, or ASTM category 5B, indicating that no failure was observed during cross cutting.

TABLE 1 Classification of tack test results

Example 5: static bending test

A cured composition coating was prepared on a CPI (polyimide) substrate as described above in example 3.

The coated test piece was folded multiple times at 180 degrees (i.e., folded in half). The test piece diameter was measured using a caliper. The diameter is about 1 mm. Each test piece was stored under different conditions, respectively, at a temperature of 70 ℃ for 10 days and at a temperature of-40 ℃ for 3 days.

After testing, the surfaces of the individual test pieces were visually inspected and microscopically inspected. The inset of fig. 2A-2B shows a cross-sectional view of the interlayer and coating layers of the CPI film. The CPI film substrate and the cured composition coating layer had a thickness of 120 microns and <1 micron, respectively. No specific delamination or cracking was observed at the boundary of the two films.

Example 6: pencil hardness test (ASTM D3363)

The hardness of the cured composition coating layer was evaluated using ASTM D3363 standard test method.

Prior to testing, the pencil was sharpened with a special pencil sharpener supplied by BYK. The hardness of the pencil ranges from 6B (soft) to 8H (hard). The lead is sharpened to about 5 mm to 6 mm. The cores were rubbed on sandpaper (400 grit) at 90 ℃ until a flat, smooth circular cross-section was achieved. The setup of the pencil tester is shown in fig. 3. When the test piece is placed under the pencil tip, a pushing force is applied. The speed of the pencil tester is 0.5 mm/s to 1 mm/s. The surface of the test piece was visually inspected for scratches or gouges.

A test piece made by the aforementioned formulation (ginseng urethane POSS: hydroxyethyl methacrylate: photoinitiator: diacrylate: 0.4 g: 0.5 g: 0.05 g: 0.05g) demonstrated 6H hardness. To improve hardness, the formulation was modified as follows:

by following the procedure as described in example 3 above, a coating composition was prepared containing the following specified amounts of materials:

1. siloxane of the tri-copolymer of example 2: 0.6 g

2. 2-hydroxyethyl methacrylate: 0.7 g

2-hydroxy-2-methylpropiophenone: 0.01 g

4.1, 6-Hexane diol diacrylate: 0.01 g

The pencil hardness test was performed as described previously. As shown in fig. 4, the hardness was examined for 5H to 9H. No gouges or scratches were seen on the glass test pieces coated with the aforementioned formulations. It was confirmed that the hardness of the test piece was 9H or more.

Examples 7 to 10: antimicrobial compositions and tests

Example 7: antimicrobial compositions

The coating composition prepared contained the following materials:

1) siloxane of bis-copolymer of example 1

2) 2-Hydroxyethyl methacrylate

3) Dipentaerythritol pentaacrylate/hexaacrylate

4)1, 6-Hexane diol diacrylate

5) Omnirad 184 photoinitiator (IGM)

6) Polyether modified Silicone surfactant (BYK-307, BYK Chemie)

The six components are mixed in a ratio of 30: 20: 20: 16: 3: 1 relative weight percent. To the mixture was added 0.5 wt% of AEM5772(Micrboan) antimicrobial additive based on the weight of the mixture. These materials were sonicated for about 10 minutes. The composition is considered solvent-free because the individual components are miscible with one another without the aid of other solvents.

The composition was air sprayed onto the polycarbonate cell phone case using an air spray gun. The coated phone shell was uv cured.

Example 8: additional antimicrobial compositions

The coating composition prepared contained the following materials:

1) siloxane of bis-copolymer of example 1

2) 2-Hydroxyethyl methacrylate

3)1, 6-Hexane diol diacrylate

4) Omnirad 184 photoinitiator (IGM)

5) Polyether modified Silicone surfactant (BYK-307, BYK Chemie)

The five components are mixed in a ratio of 35: 45: 9: 10:1 relative weight percent. To the mixture was added 0.5 wt% of AEM5772(Micrboan) antimicrobial additive based on the weight of the mixture. These materials were sonicated for about 10 minutes. The composition is considered solvent-free because the individual components are miscible with one another without the aid of other solvents.

The composition was air sprayed onto the polycarbonate cell phone case using an air spray gun. The coated phone shell was uv cured.

Example 9: additional antimicrobial compositions

The coating composition prepared contained the following materials:

1) siloxane of bis-copolymer of example 1

2) 2-Hydroxyethyl methacrylate

3)1, 6-Hexane diol diacrylate

4) Omnirad 184 photoinitiator (IGM)

These four components were mixed at 35: 45: 10:1 relative weight percent. To the mixture was added 0.5 wt% of inorganic silver nanoparticles (silver (Ag) nanopowder/nanoparticles (Ag, 99.99%, 30-50nm, with 0.2 wt% PVP coating, available from american research Nanomaterials, Houston, Texas) antibacterial additive based on the weight of the mixture. These materials were sonicated for about 10 minutes. The composition is considered solvent-free because the individual components are miscible with one another without the aid of other solvents.

The composition was air sprayed onto the polycarbonate cell phone case using an air spray gun. The coated phone shell was uv cured.

Example 10: antimicrobial testing

The coated cell phone shells prepared in examples 7 and 10 above were tested in ISO 22196, a method generally accepted for evaluating antimicrobial activity of antimicrobial treated plastics and other non-porous surface products.

The results of the ISO 22196 test are listed in table 2 below, which shows excellent results (97 to 99%) for the different test bacteria.

Table 2: antimicrobial testing in ISO 22196

Examples 11 to 14: colorant compositions and tests

Example 11: colored (silver) composition

The coating composition prepared contained the following materials:

1) siloxane of bis-copolymer of example 1

2) 2-Hydroxyethyl methacrylate

3)1, 6-Hexane diol diacrylate

4) Omnirad 184 photoinitiator (IGM)

The four components were mixed at 40: 50: 5: 5 relative weight percent. To the mixture was added 0.5 wt% of inorganic silver nanoparticles (silver (Ag) nanopowder/nanoparticles (Ag, 99.99%, 30-50nm, with 0.2 wt% PVP coating, available from american research Nanomaterials, Houston, Texas) antibacterial additive based on the weight of the mixture. These materials were sonicated for about 10 minutes. The composition is considered solvent-free because the individual components are miscible with one another without the aid of other solvents.

The composition was air sprayed onto the silica gel watch wristband using an air spray gun. The coated wristband is uv cured. Such compositions containing inorganic colorants do not show delamination or coating failure over long periods of time.

Example 12: additional coloring (Red) compositions

The coating composition prepared contained the following materials:

1) siloxane of bis-copolymer of example 1

2) 2-Hydroxyethyl methacrylate

3)1, 6-Hexane diol diacrylate

4) Omnirad 184 photoinitiator (IGM)

The four components were mixed at 40: 50: 5: 5 relative weight percent. To the mixture was added 0.5 wt% of inorganic silver nanoparticles (silver (Ag) nanopowder/nanoparticles (Ag, 99.99%, 30-50nm, with 0.2 wt% PVP coating, available from american research Nanomaterials, Houston, Texas) antibacterial additive based on the weight of the mixture. These materials were sonicated for about 10 minutes. The composition is considered solvent-free because the individual components are miscible with one another without the aid of other solvents.

The composition was air sprayed onto the nylon watch wristband using an air spray gun. The coated wristband is uv cured. The band has no signs that peel or delaminate during handling in extreme bending and twisting.

Example 13: additional coloring (fluorescent) composition

The coating composition prepared contained the following materials:

1) siloxane of bis-copolymer of example 1

2) 2-Hydroxyethyl methacrylate

3)1, 6-Hexane diol diacrylate

4) Omnirad 184 photoinitiator (IGM)

The four components were mixed at 40: 50: 5: 5 relative weight percent. To the mixture was added 0.5% by weight of a commercially available fluorescent dye based on the weight of the mixture. These materials were sonicated for about 10 minutes. The composition is considered solvent-free because the individual components are miscible with one another without the aid of other solvents.

The composition was air sprayed onto the nylon watch wristband using an air spray gun. The coated wristband is uv cured.

Example 14: additional coloring (fluorescent) composition

The fluorescent composition of example 13 was sprayed onto a leather cloth sample. The sprayed coating was conformal and uniformly applied to the sample surface. There was no significant difference between the coated and uncoated areas of the swatch. Under ultraviolet light (365nm), the coated sample showed blue fluorescence, while the uncoated area could not be illuminated at 365 nm.