阅读说明：本技术 包含膨胀型tpu和涂层的制品 (Article comprising an expanded TPU and a coating ) 是由 R.伊尔尼希 T.米夏利斯 于 2018-06-27 设计创作，主要内容包括：本发明涉及包含膨胀型热塑性聚氨酯作为衬底和在所述衬底上的特定聚氨酯脲涂层的制品、以及鞋类、用于制备该制品的方法和聚氨酯脲溶液的用途。已发现包含聚碳酸酯结构单元的聚氨酯脲涂层坚固地结合膨胀型TPU衬底并维持膨胀型TPU的固有性质。(The invention relates to an article comprising an expanded thermoplastic polyurethane as a substrate and a specific polyurethane urea coating on said substrate, as well as to footwear, a method for producing said article and the use of a polyurethane urea solution. It has been found that a polyurethaneurea coating comprising polycarbonate structural units strongly bonds to an expanded TPU substrate and maintains the inherent properties of expanded TPU.)

1. An article comprising an expanded thermoplastic polyurethane as a substrate and a coating on at least a portion of said substrate, wherein said coating is obtained by curing a polyurethaneurea solution comprising at least one organic solvent, characterized in that said polyurethaneurea comprises polycarbonate structural units.

2. The article of claim 1, wherein the expanded thermoplastic polyurethane comprises at least one polyether.

3. The article according to any of claims 1 or 2, wherein the expanded thermoplastic polyurethane additionally comprises at least one lubricant.

4. The article of claim 4, wherein the at least one lubricant is selected from talc, metal compounds, silica, salts of C10 to C22 carboxylic acids, esters of C10 to C22 carboxylic acids, silicone oil, polytetrafluoroethylene, or a combination of at least two thereof.

5. The article of any one of claims 1 to 4, wherein the polyurethaneurea is obtained by the reaction of at least the following free:

a) a polycarbonate diol which is a mixture of a polycarbonate diol,

b) an aliphatic or cycloaliphatic diamine or hydrazine as a chain extender, and

c) aliphatic, cycloaliphatic or aromatic diisocyanates.

6. The article of any one of claims 1 to 5, wherein the polyurethaneurea comprises alkoxysilane structural units.

7. The article of any one of claims 1 to 6, wherein the at least one solvent is selected from the group consisting of toluene, isopropanol, 1-methoxypropan-2-ol, 1-methoxypropyl acetate, γ -butyrolactone, propylene glycol monomethyl ether, 2-butanone, ethyl acetate, and combinations of at least two thereof.

8. The article of any one of claims 1 to 7, wherein the polyurethaneurea solution additionally comprises at least one colorant.

9. The article of any one of claims 1 to 8, wherein the polyurethaneurea solution additionally comprises at least one polyisocyanate.

10. The article according to any one of claims 1 to 9, wherein the article is selected from a shoe sole, a seat, such as a car seat or a child seat, an inner tube, such as a bicycle inner tube, a reel, such as a cabin reel, a bumper, such as a car bumper, a cushion and a mattress, or a combination of at least two thereof.

11. Footwear comprising an article according to any one of claims 1 to 10.

12. A process for preparing the article according to any one of claims 1 to 10, comprising the steps of:

1) providing a substrate comprising an expanded thermoplastic polyurethane,

2) applying a polyurethaneurea solution comprising at least one organic solvent onto at least a portion of the substrate of step 1), wherein the polyurethaneurea comprises polycarbonate structural units,

3) curing said polyurethaneurea solution of step 2) to obtain a coating, and

4) optionally repeating steps 2) and 3) at least once, wherein, when repeating step 2), the polyurethaneurea solution comprising at least one organic solvent is applied to the cured coating obtained in step 3) or repeated step 3).

13. The method of claim 12, wherein in step 2) the polyurethaneurea solution comprising at least one organic solvent is applied to the substrate by brushing, spraying, rolling, slot coating, dipping and/or printing.

14. The process according to any one of claims 12 or 13, wherein the polyurethaneurea solution used in step 2) and/or when repeating step 2) has a viscosity of 50 to 40000mPas according to DIN EN ISO 3219/a.3.

15. Use of a polyurethaneurea solution comprising at least one organic solvent for the decorative coating of a substrate comprising an expanded thermoplastic polyurethane, wherein the polyurethane comprises polycarbonate structural units.

Examples