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Comb-shaped associative polyurethane composite modified organic silicon softener emulsion and preparation method thereof

A technology of silicone softener and associative polyurethane, which is applied in the field of comb-like associative polyurethane compound modified silicone softener emulsion and its preparation, can solve the problems of not being able to obtain a novel hand feeling style and being inseparable.

Active Publication Date: 2021-06-18
WUHAN TEXTILE UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the hand feeling style of the product still cannot be separated from the category of silicone softener, and a novel hand feeling style cannot be obtained.

Method used

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  • Comb-shaped associative polyurethane composite modified organic silicon softener emulsion and preparation method thereof

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preparation example Construction

[0068] One aspect of the present invention provides a method for preparing a comb-like association type polyurethane composite modified silicone softener emulsion, said method comprising the following steps:

[0069] (1) Preparation of raw materials: The raw materials contain polymerized monomers, auxiliary agents, silicone softeners and water; wherein, the polymerized monomers include diisocyanate, hydroxyl-terminated polysiloxane, functional chain extenders and cationic chain extenders agent; auxiliary agent includes polymerization catalyst, diluent, neutralizer and emulsifier; silicone softener is amino silicone oil; water is soft water;

[0070] The diisocyanate is isophorone diisocyanate;

[0071] Hydroxyl-terminated polysiloxane is a mixture of single-ended dihydroxyalkyl polymethylsilane with a molecular weight of 6000-9000 and two-terminal dihydroxyalkyl polymethylsilane with a molecular weight of 1500-2500;

[0072] The functional chain extender is a single-ended dih...

Embodiment 1

[0125] (1) raw material preparation, the concrete selection and consumption of described raw material are as shown in table 1;

[0126] (2) Dehydration pretreatment: dehydration pretreatment of the functional chain extender under vacuum and heating conditions, and set aside;

[0127] (2.1) put the functional chain extender into the reactor;

[0128] (2.2) Heat to 102°C, treat at -0.099MPa vacuum for 80min, and set aside;

[0129] (3) Prepolymerization: Prepolymerize diisocyanate, hydroxyl-terminated polysiloxane, and polymerization catalyst to prepare a comb-like associative polyurethane composite modified silicone softener prepolymer;

[0130] (3.1) Add diisocyanate into the reactor, slowly add hydroxyl-terminated polysiloxane at 72°C within 20 minutes, and keep warm for 20 minutes;

[0131] (3.2) Add a polymerization catalyst to (3.1) and maintain the reaction at 77°C for 17.5 minutes;

[0132] (3.3) Raise the temperature to 90°C, and cool down to 80°C after holding the h...

Embodiment 2

[0145] (1) raw material preparation, the concrete selection and consumption of described raw material are as shown in table 1;

[0146] (2) Dehydration pretreatment: dehydration pretreatment of the functional chain extender under vacuum and heating conditions, and set aside;

[0147] (2.1) put the functional chain extender into the reactor;

[0148](2.2) Heat to 102°C, treat at -0.099MPa vacuum for 75min, and set aside;

[0149] (3) Prepolymerization: Prepolymerize diisocyanate, hydroxyl-terminated polysiloxane, and polymerization catalyst to prepare a comb-like associative polyurethane composite modified silicone softener prepolymer;

[0150] (3.1) Add the diisocyanate into the reactor, slowly add the hydroxyl-terminated polysiloxane at 75°C within 15 minutes, and keep the reaction for 25 minutes;

[0151] (3.2) Add a polymerization catalyst to (3.1) and maintain the reaction at 77°C for 17 minutes;

[0152] (3.3) Raise the temperature to 90°C, and cool down to 80°C after ...

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Abstract

The invention relates to the field of polyurethane modified resin type organic silicon softener emulsion for finishing hand feeling styles of various textiles, and discloses comb-shaped associative polyurethane composite modified organic silicon softener emulsion and a preparation method thereof. The method comprises the following steps: preparing raw materials; performing prepolymerization; and carrying out chain extension and mixing emulsification. The softener emulsion disclosed by the invention is novel in structure and remarkable in effect. Various macromolecules in the emulsion can be effectively associated with each other, and blending modification of a traditional organic silicon softener is realized on textile fibers in a molecular blending manner. The self-made polyurethane modified polysiloxane polymer main chain has better extensibility, and polysiloxane long chains and polyether long chains are distributed in the side direction of the self-made polyurethane modified polysiloxane polymer main chain in an echelon manner; compared with a traditional amino modified organic silicon softener, the product provided by the invention can endow various textiles with obviously better hydrophilicity and elastic hand feeling; and the product is low in emulsifier content, safe, environmentally friendly and convenient to use, and has a good market prospect.

Description

technical field [0001] The invention relates to the field of polyurethane-modified resin-type silicone softener emulsions for finishing various types of textiles, in particular to a comb-like association type polyurethane compound-modified silicone softener emulsion and a preparation method thereof. Background technique [0002] In the past 10 years, as the most widely used, largest and most diverse textile chemical in textile printing and dyeing, silicone softeners have encountered development bottlenecks in terms of polymerization monomers, preparation technology, and style characteristics. In order to seek breakthroughs, relevant scientific and technical personnel are constantly trying to introduce non-silicon polymer materials with excellent properties into the structure or formulation system of silicone softeners, in order to obtain new or rich softeners such as hydrophilic, high-elasticity, richness, fineness, and softness. Variety of textile characteristic styles. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/568D06M15/643C08G18/10C08G18/40C08G18/48C08G18/61C08G18/32
CPCD06M15/568D06M15/6436C08G18/61C08G18/4833C08G18/4009C08G18/10D06M2200/50C08G18/48C08G18/3275
Inventor 权衡吴静怡陈文龙吴越刘小川李青倪丽杰卫增峰
Owner WUHAN TEXTILE UNIV
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