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Preparation method of fluffy polyurethane modified silicone softener

A silicone softener and polyurethane modification technology, applied in the direction of improved hand fiber, fiber treatment, textiles and papermaking, etc., can solve problems such as easy delamination, reduce fiber dynamic and static friction coefficient, staining, etc., to increase strength , increase the effect of non-ironing level

Active Publication Date: 2020-05-22
ZIBO LURUI FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Textile softener is a textile auxiliary that can give fabrics a special feel. Currently, modified silicone softeners or ternary block silicone softeners are the main ones. Silicone oils with this type of structure have good molecular softness and can effectively Reduce the dynamic and static friction coefficient between fibers, with excellent hand feeling and hydrophilicity. With the increasing requirements of customers, a single style of softener can no longer meet customer needs. According to the style requirements, fatty acids, polyurethanes and modified One or several combinations of silicone oils are used to meet customers' requirements for comprehensive properties such as softness, hydrophilicity, bulkiness, and wrinkle resistance. However, due to the poor stability of mixed and compounded products, in Problems such as delamination and contamination are prone to occur during storage, transportation and use

Method used

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  • Preparation method of fluffy polyurethane modified silicone softener
  • Preparation method of fluffy polyurethane modified silicone softener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add 80g hydroxyethyl polysiloxane (molecular weight 1500), 23.5g hexamethylene diisocyanate (HDI molecular weight 168), 96.5g polyoxypropylene diol (molecular weight 1600) to a clean flask, add Catalyst 0.15 g of dibutyltin dilaurate, stirred and reacted at 65° C. for 3.5 h to obtain isocyanate-terminated polyurethane-modified silicone prepolymer.

[0029] (2) Continue to add 26.5g of lauric acid, and stir and react at 70°C for 1.5h to obtain a silicone fatty acid polyurethane copolymer.

[0030] (3) Take 25g of the prepared copolymer, add 3g of isomeric C12~C13 fatty alcohol polyoxyethylene ether (5EO), 3g of isomeric C12~C13 fatty alcohol polyoxyethylene ether (7EO), 1g of diethylene glycol monobutyl Ether, 1g of isopropanol, and 0.5g of glacial acetic acid were mixed evenly, and 66.5g of deionized water was evenly added dropwise within 30 minutes for emulsification to obtain a fluffy polyurethane-modified silicone copolymer softener.

Embodiment 2

[0032] (1) In a clean flask, add 115g hydroxypropyl polysiloxane (molecular weight 2100), 21g hexamethylene diisocyanate (HDI molecular weight 168), 164g polyethylene oxide glycol (molecular weight 2000), add catalyst octanoic acid 0.25 g of stannous was stirred and reacted at 85° C. for 4.5 h to obtain an isocyanate-terminated polyurethane-modified silicone prepolymer.

[0033] (2) Continue to add 42 g of stearic acid, and stir and react at 90° C. for 3 h to obtain a silicone fatty acid polyurethane copolymer.

[0034] (3) Take 28g of the prepared copolymer, add 5g isomeric C12~C13 fatty alcohol polyoxyethylene ether (7EO), 3g isomeric C12~C13 fatty alcohol polyoxyethylene ether (12EO), 1g ethylene glycol monobutyl ether , 1g of propylene glycol, and 1.0g of glacial acetic acid were mixed evenly, and 61g of deionized water was evenly added dropwise within 30 minutes for emulsification to obtain a fluffy polyurethane-modified silicone copolymer softener.

[0035] See Table 1 ...

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Abstract

The invention belongs to the technical field of preparation of fabric aids and particularly relates to a preparation method of a fluffy polyurethane modified organic silicone softener. A reactive polysiloxane linear body, diisocyanate and polyether polyol react under the catalysis of a tin catalyst at the temperature of 60-90 DEG C for 3-5 h, and an isocyanate-terminated modified organic siliconepolyurethane prepolymer is obtained; fatty acid is added to the modified organic silicone polyurethane prepolymer, the mixture reacts at the temperature of 60-90 DEG C for 1-3 h, and a modified organic silicone fatty acid polyurethane prepolymer is obtained; an emulsifier, a cosolvent and glacial acetic acid are added to the modified organic silicone fatty acid polyurethane prepolymer, the mixtureis mixed at the temperature of 40-60 DEG C, deionized water is added for emulsification, and the fluffy polyurethane modified organic silicone softener is obtained. The prepared softener has excellent stability in the storage, transportation and use processes and endows fabric with unique fluffy hand feeling style, and good strength of the fabric can be kept and the easy-care level of the fabriccan be improved when the softener is used in a resin one-bath process.

Description

technical field [0001] The invention belongs to the technical field of preparation of textile auxiliaries, and in particular relates to a preparation method of a fluffy polyurethane modified silicone softener. Background technique [0002] Textile softener is a textile auxiliary that can give fabrics a special feel. Currently, modified silicone softeners or ternary block silicone softeners are the main ones. Silicone oils with this type of structure have good molecular softness and can effectively Reduce the dynamic and static friction coefficient between fibers, with excellent hand feeling and hydrophilicity. With the increasing requirements of customers, a single style of softener can no longer meet customer needs. According to the style requirements, fatty acids, polyurethanes and modified One or several combinations of silicone oils are used to meet customers' requirements for comprehensive properties such as softness, hydrophilicity, bulkiness, and wrinkle resistance. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/73C08G18/61C08G18/48C08G18/28C08G18/12C08J3/05D06M15/653D06M15/647
CPCC08G18/12C08G18/4009C08G18/4825C08G18/4833C08G18/61C08G18/73C08J3/05C08J2375/08D06M15/647D06M15/653D06M2200/20D06M2200/50C08G18/2805
Inventor 孙莹莹王艾德齐鹏举
Owner ZIBO LURUI FINE CHEM CO LTD