阅读说明：本技术 涤纶染色载体及其制备方法 (Polyester dyeing carrier and preparation method thereof ) 是由 蔡润之 涂胜宏 于 2019-10-14 设计创作，主要内容包括：本发明提供了一种涤纶染色载体及其制备方法,所述涤纶染色载体中按质量分数包括70～85％的N-烷基-4-苄氧甲酰基-邻苯二甲酰亚胺、5～10％的阴离子乳化剂、5～10％非离子乳化剂以及5～10％的溶剂。其不含有APEO等禁用成分,还具有环保、无味、高效等优点。(The invention provides a terylene dyeing carrier and a preparation method thereof, wherein the terylene dyeing carrier comprises 70-85% of N-alkyl-4-benzyloxyformyl-phthalimide, 5-10% of an anionic emulsifier, 5-10% of a nonionic emulsifier and 5-10% of a solvent by mass. It does not contain forbidden components such as APEO and the like, and also has the advantages of environmental protection, tastelessness, high efficiency and the like.)

1. The terylene dyeing carrier is characterized by comprising the following components in percentage by mass:

2. the carrier for dyeing dacron as claimed in claim 1, wherein said N-alkyl-4-benzyloxyformyl-phthalimide has the general structural formula:

wherein R in the structural general formula comprises a straight chain alkyl or a branched chain alkyl.

3. The polyester dyeing support according to claim 1, wherein the alkyl group of the N-alkyl-4-benzyloxyformyl-phthalimide comprises one or more of N-butyl, N-hexyl, N-octyl and isopropyl groups.

4. The polyester dyeing carrier according to claim 1, wherein the anionic emulsifier is a vegetable polyene phenol polyoxyethylene ether phosphate; the nonionic emulsifier is fatty amine polyoxyethylene ether.

5. The polyester dyeing carrier according to claim 4,

the plant polyene phenol polyoxyethylene ether phosphate comprises one or more of NSF-5 phosphate, NSF-7 phosphate, NSF-9 phosphate and NSF-10 phosphate;

the fatty amine polyoxyethylene ether comprises one or more of AC1810, AC1812, AC1815 and AC 1820.

6. The polyester dyeing carrier according to claim 1, wherein the solvent comprises one or more of ethylene glycol, diethylene glycol, propylene glycol, and dipropylene glycol.

7. The preparation method of the terylene dyeing carrier is characterized by comprising the following steps:

step S10) preparing N-alkyl-4-benzyloxyformyl-phthalimide;

step S20), mixing 70-85% of N-alkyl-4-benzyloxyformyl-phthalimide, 5-10% of anionic emulsifier, 5-10% of nonionic emulsifier and 5-10% of solvent by mass, and uniformly stirring to obtain the polyester dyeing carrier.

8. The method for preparing polyester dyeing carrier according to claim 7, characterized in that the step S10 includes the following steps:

step S11), adding alkylamine and trimellitic anhydride into a reaction container at the temperature of 90-120 ℃ to carry out ring-opening reaction; heating to 130-160 ℃, and then performing dehydration ring-closure reaction under the environment of vacuum degree of-0.1 to-0.07 MPa to obtain N-alkyl-4-carboxyl-phthalimide;

step S12) adding benzyl alcohol and a catalyst into the N-alkyl-4-carboxyl-phthalimide, and performing dehydration esterification reaction at the temperature of 150-180 ℃ and the vacuum degree of-0.1 to-0.07 MPa to obtain the N-alkyl-4-benzyloxyformyl-phthalimide.

9. The method for preparing a polyester dyeing support according to claim 8, wherein the alkylamine comprises one or more of n-butylamine, n-hexylamine, n-octylamine and isopropylamine.

10. The method for preparing polyester dyeing carrier according to claim 8,

the molar ratio of the alkylamine to the trimellitic anhydride is 1: 1.04-1.1;

the molar ratio of the N-alkyl-4-carboxyl-phthalimide to the benzyl alcohol is 1: 1.04-1.1;

the catalyst is p-toluenesulfonic acid, and the addition amount of the p-toluenesulfonic acid is 1-4% of the total mass of the N-alkyl-4-carboxyl-phthalimide and the benzyl alcohol.

Technical Field

The invention relates to the technical field of dyeing and finishing processes, in particular to a terylene dyeing carrier and a preparation method thereof.

Background

In recent years, the Chinese economy continues to rapidly increase and the domestic consumption capability is continuously improved, the domestic polyester fiber production can be increased at an astonishing speed, and the domestic polyester fiber production is the country with the largest polyester fiber production in the world. The polyester fiber has excellent performance and wide application field, and the excellent wearability of the polyester fiber makes the polyester fiber become one of the varieties with fastest development and highest yield in synthetic fibers.

With the improvement of living standard, the requirements of people on the quality of clothes are continuously improved, and the individuation, diversification and functionalization of clothes are pursued, so that the application of the multi-fiber composite fabric is wider. Some fibers which do not resist high temperature, such as wool, silk, chinlon, acrylon and the like, are blended with polyester fibers, the dyeing temperature is limited, and the trend of researching how to dye the polyester fibers at low temperature is developed at present.

The polyester fiber is a hydrophobic fiber, has a compact structure and high crystallinity, lacks an active group capable of being combined with a dye in the structure, is difficult to dye at normal temperature, and has a common dyeing mode as follows: high temperature and high pressure processes, hot melt processes and carrier dyeing processes. The carrier dyeing is a dyeing method which utilizes the plasticizing and bulking performance of a carrier auxiliary agent to polyester fibers to ensure that disperse dye can dye the polyester fibers under the condition of normal pressure and 98-115 ℃.

The carrier is an ester or aromatic compound containing benzene rings, is insoluble in water, and can be self-emulsified in water by adding a surfactant to form a dyeing assistant of stable dispersed emulsion. The carrier and the terylene have similar structures (benzene ring and ester group) and solubility parameters, so the carrier has higher affinity to the terylene, and fibers are bulked by utilizing a similar compatibility principle; the polyester fiber is firstly diffused into the fiber in the dyeing process, and the functions of reducing the glass transition temperature (Tg) and plasticizing of the polyester fiber are achieved.

The carrier is an organic solvent, has a solubilizing effect on the dye, enables the dye to be dissolved in the carrier, and promotes the dye to be dyed and diffused in the polyester fiber. The emulsifier in the carrier can form micelle in water to solubilize the dye, and has dispersing effect on the dye, thereby being beneficial to level dyeing. Throughout the dyeing process, the role of the vector is summarized as: the dyeing is accelerated in the early stage of dyeing, and the transfer dyeing is carried out in the later stage of dyeing.

The environmental protection carriers used in the market at present mainly comprise benzyl benzoate and N-alkyl phthalimide. Benzyl benzoate has odor, the odor can be released to a working environment in the dyeing process, and the cloth cover can also be remained after dyeing, so that the cloth cover has the odor. Although the N-alkyl phthalimide is an environment-friendly odorless carrier, the dyeing promotion performance is general, so that the dye uptake rate is low, more waste is caused, and the dyeing cost is increased by increasing the using amount of the carrier. Therefore, the environment-friendly odorless polyester dyeing environment-friendly carrier with good dyeing promoting performance, simple preparation process and low cost and the preparation method thereof are in urgent need to appear.

Disclosure of Invention

The invention aims to provide a terylene dyeing carrier and a preparation method thereof, which aim to solve the problems of odor, insufficient dyeing promotion efficiency and the like of the dyeing carrier in the prior art.

In order to achieve the purpose, the invention provides a terylene dyeing carrier, which comprises the following components in percentage by mass:

further, the structural general formula of the N-alkyl-4-benzyloxyformyl-phthalimide is as follows:

wherein R in the structural general formula comprises a straight chain alkyl or a branched chain alkyl.

Further, the alkyl group in the N-alkyl-4-benzyloxyformyl-phthalimide comprises one or more of a N-butyl group, a N-hexyl group, a N-octyl group and an isopropyl group.

Further, the anionic emulsifier is plant polyene phenol polyoxyethylene ether phosphate. The nonionic emulsifier is fatty amine polyoxyethylene ether.

Further, the plant polyene phenol polyoxyethylene ether phosphate comprises one or more of NSF-5 phosphate, NSF-7 phosphate, NSF-9 phosphate and NSF-10 phosphate. The fatty amine polyoxyethylene ether comprises one or more of AC1810, AC1812, AC1815 and AC 1820.

Further, the solvent comprises one or more of ethylene glycol, diethylene glycol, propylene glycol and dipropylene glycol.

The invention also provides a preparation method of the terylene dyeing carrier, which comprises the following steps:

step S10) of preparing N-alkyl-4-benzyloxyformyl-phthalimide.

Step S20), mixing 70-85% of N-alkyl-4-benzyloxyformyl-phthalimide, 5-10% of anionic emulsifier, 5-10% of nonionic emulsifier and 5-10% of solvent by mass, and uniformly stirring to obtain the polyester dyeing carrier.

Further, the step S10 includes the following steps:

step S11), under the environment of 90-120 ℃, adding alkylamine and trimellitic anhydride into a reaction vessel for ring-opening reaction; heating to 130-160 ℃, and then performing dehydration ring-closure reaction under the environment of vacuum degree of-0.1 to-0.07 MPa to obtain the N-alkyl-4-carboxyl-phthalimide.

Step S12) adding benzyl alcohol and a catalyst into the N-alkyl-4-carboxyl-phthalimide, and performing dehydration esterification reaction at the temperature of 150-180 ℃ and the vacuum degree of-0.1 to-0.07 MPa to obtain the N-alkyl-4-benzyloxyformyl-phthalimide.

Further, the alkylamine includes one or more of n-butylamine, n-hexylamine, n-octylamine and isopropylamine.

Further, the molar ratio of the alkylamine to the trimellitic anhydride is 1: 1.04-1.1. The molar ratio of the N-alkyl-4-carboxyl-phthalimide to the benzyl alcohol is 1: 1.04-1.1. The catalyst is p-toluenesulfonic acid, and the addition amount of the p-toluenesulfonic acid is 1-4% of the total mass of the N-alkyl-4-carboxyl-phthalimide and the benzyl alcohol.

The invention has the advantages that: the polyester dyeing carrier provided by the invention is simple in components, can greatly reduce the cost, does not contain forbidden components such as APEO (alkaline peroxide ethylene oxide), has synergistic effect of the components, can effectively improve the solubility, the diffusion efficiency and the dyeing capacity of the dye to polyester, improves the solubilizing capacity of micelle, enhances the high-temperature dispersion stability, does not cause fabric color change in the using process, has no peculiar smell, and has the advantages of environmental protection, no odor, high efficiency and the like. And the preparation method has simple steps and high process controllability.

Detailed Description

The following is a preferred embodiment of the present invention to fully introduce the technical contents of the present invention to those skilled in the art to illustrate that the present invention can be implemented, so that the technical contents disclosed in the present invention are more clear, and so that those skilled in the art can more easily understand how to implement the present invention. The present invention may, however, be embodied in many different forms of embodiment, and the scope of the present invention should not be construed as limited to the embodiment set forth herein, but rather construed as being limited only by the following description of the embodiment.

In the present specification, all raw materials used therein are conventionally used and commercially available. In the present invention, all amounts, percentages and parts are in parts by mass units, unless otherwise specified. The terms used in the description of the present invention are only used to describe specific embodiments, and are not intended to show the concept of the present invention. Unless the context clearly dictates otherwise, expressions used in the singular form encompass expressions in the plural form. In the present specification, it is to be understood that terms such as "comprising," "having," and "containing" are intended to specify the presence of stated features, integers, steps, acts, or combinations thereof, as taught in the present specification, and are not intended to preclude the presence or addition of one or more other features, integers, steps, acts, or combinations thereof.

The context clearly dictates otherwise that all of the method steps described herein may be performed in any suitable order. The present invention is not limited to the order of steps described. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the inventive concept and does not pose a limitation on the scope of the inventive concept unless otherwise claimed. Various modifications and adaptations will be apparent to those skilled in the art without departing from the spirit and scope.