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Multi-arm associated 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 preparation of multi-arm associative polyurethane composite modified silicone softener emulsion, can solve the problems of lack of change, simple structure, poor degree of freedom, etc., and achieve remarkable Modification effect, effect of novel style effect

Active Publication Date: 2021-06-15
WUHAN TEXTILE UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the polyurethane-type silicone softener polymer with such a structure is a typical linear block structure, its primary chemical structure and secondary supramolecular structure are simple and lack of change, and the flexible polysiloxane chains at both ends are constrained by Due to the fixed effect of chemical bonds, the degree of freedom is poor, and it is impossible to modify the traditional silicone softener in the way of "forced mutual solubility between molecules (molecular entanglement)" through physical blending, and obtain a positive modification effect

Method used

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  • Multi-arm associated polyurethane composite modified organic silicon softener emulsion and preparation method thereof

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preparation example Construction

[0067] One aspect of the present invention provides a method for preparing a multi-arm associative polyurethane composite modified silicone softener emulsion, the method comprising the following steps:

[0068] (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 polyether triol, hydroxyl-terminated hydrocarbon polysiloxane and hydroxyl-terminated Polyether glycol; auxiliary agent includes polymerization catalyst, diluent, neutralizer and emulsifier; silicone softener is amino silicone oil; water is soft water;

[0069] The diisocyanate is isophorone diisocyanate;

[0070] The hydroxyl-terminated polyether triol is a random copolymer of ethylene oxide and propylene oxide with a molecular weight of 2000-4000;

[0071] Hydroxyl-terminated polysiloxane is dihydroxyl-alkyl polymethylsilane with a molecular weight of 2000-4000;

...

Embodiment 1

[0123] (1) raw material preparation, the concrete selection and consumption of described raw material are as shown in table 1;

[0124] (2) Dehydration pretreatment: dehydration pretreatment of hydroxyl-terminated polyether triol and hydroxyl-terminated polyether diol under vacuum and heating conditions respectively, for subsequent use;

[0125] (2.1) Put the hydroxyl-terminated polyether triol and the hydroxyl-terminated polyether diol into different reactors respectively;

[0126] (2.2) Treat at 102°C and -0.099MPa vacuum for 77 minutes respectively, and set aside;

[0127] (3) One-time capping: carry out a one-time capping reaction on diisocyanate, hydroxyl-terminated polyether triol, part of the polymerization catalyst, and part of the diluent to prepare a multi-arm associative polyurethane composite modified silicone softener intermediate;

[0128] (3.1) Add diisocyanate into the reactor, slowly add 50% of the hydroxyl-terminated polyether triol obtained in step (2.2) at...

Embodiment 2

[0142] (1) raw material preparation, the concrete selection and consumption of described raw material are as shown in table 1;

[0143] (2) Dehydration pretreatment: dehydration pretreatment of hydroxyl-terminated polyether triol and hydroxyl-terminated polyether diol under vacuum and heating conditions respectively, for subsequent use;

[0144] (2.1) Put the hydroxyl-terminated polyether triol and the hydroxyl-terminated polyether diol into different reactors respectively;

[0145] (2.2) Treat at 108°C and -0.098MPa vacuum for 78 minutes respectively, and set aside;

[0146] (3) One-time capping: carry out a one-time capping reaction on diisocyanate, hydroxyl-terminated polyether triol, part of the polymerization catalyst, and part of the diluent to prepare a multi-arm associative polyurethane composite modified silicone softener intermediate;

[0147] (3.1) Add diisocyanate into the reactor, slowly add 60% of the hydroxyl-terminated polyether triol obtained in step (2.2) at...

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Abstract

The invention relates to the field of polyurethane modified organic silicon softener emulsion for finishing hand feeling styles of various textiles, and discloses a preparation method of a multi-arm associated polyurethane composite modified organic silicon softener emulsion. The method comprises the following steps of preparing raw materials; performing dehydration pretreatment; performing primary end sealing; carrying out secondary end sealing; and mixing and emulsifying. Various polymers in the softener emulsion prepared by the method can be effectively associated with one another, and blending modification of a traditional organic silicon softener is realized on textile fibers in an intermolecular entanglement manner, wherein the self-made polyurethane modified polysiloxane polymer has three long-chain branched arms with different structures, and a plurality of multi-arm structure molecules have a certain series connection property. Compared with the traditional organic silicon softener, the softener emulsion provided by the invention can endow various textiles with obviously better hydrophilicity and high-elasticity hand feeling; and the product is low in emulsifier content, safe, environment-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 method for preparing multi-arm associative polyurethane composite modified silicone softener emulsions. 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 view of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/568D06M15/643C08G18/75C08G18/61C08G18/48D06M101/06
CPCD06M15/568D06M15/643C08G18/755C08G18/4829C08G18/61C08G18/4009C08G18/4812C08G18/4833D06M2200/50D06M2101/06
Inventor 权衡陈洁吴越倪丽杰卫增峰朱建华李时伟李青
Owner WUHAN TEXTILE UNIV
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