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Preparation of block water-soluble silicon oil

A water-soluble silicone oil and block technology, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of fabric hand feeling decline, achieve self-emulsifying performance improvement, convenient use, and solve the effect of easy demulsification

Inactive Publication Date: 2009-08-05
传化智联股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has played a positive role in the development of amino-modified silicone softeners, the introduced hydrophilic chains are still on the side chains of the polymer, which will greatly reduce the handle of the treated fabrics.

Method used

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  • Preparation of block water-soluble silicon oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of amidated amino coupling agent

[0029] 20 g of γ-aminopropylmethyldimethoxysilane and 10 g of formic acid (purity: 98%) were subjected to amidation reaction in 150 g of toluene, and stirred (100 rpm) at a temperature of 85° C. for 1 h. Distill water (85°C) azeotropically with toluene, and then vacuum out unreacted formic acid to obtain amidated coupling agent.

[0030] (2) Preparation of terminal hydromethyl siloxane intermediate

[0031] Put 80 grams of octamethylcyclotetrasiloxane and 20 grams of 1,1,3,3-tetramethyldisiloxane into a four-necked bottle, and add 5 grams of the above two raw materials prepared in step (1) at the same time Amidate the coupling agent, stir and react for 0.5h (80 rpm) at a temperature of 60°C, add 0.5g of concentrated sulfuric acid, and perform an equilibrium reaction for 10h at a temperature of 70°C, and then vacuumize to remove low-molecular substances. A terminal hydromethylsiloxane intermediate with a viscosity (25°...

Embodiment 2

[0037] In embodiment 1, 20 grams of γ-aminopropylmethyl dimethoxysilane is changed to 20 grams of γ-aminopropyl ethyl dimethoxysilane, and 80 grams of octamethylcyclotetrasiloxane are changed to 80 gram of low-viscosity hydroxyl silicone oil (25°C, 50mp*s), 0.5 gram of concentrated sulfuric acid was changed to 0.4 gram of trifluoromethanesulfonic acid, and the allyl polyether was CH 2 =CHCH 2 O(C 2 h 4 O) a H (a=20), change isopropanol to toluene, platinum catalyst adopts the isopropanol solution of chloroplatinic acid, all the other are the same as embodiment 1.

Embodiment 3

[0039] In embodiment 1, 20 grams of γ-aminopropylmethyldimethoxysilane is changed to 20 grams of γ-aminoethylmethyldimethoxysilane, and 80 grams of octamethylcyclotetrasiloxane is changed to 80 gram of low-viscosity hydroxy silicone oil (25°C, 70mp*s), 0.5 gram of concentrated sulfuric acid is changed to 0.3 gram of activated clay, and allyl polyether is CH 2 =CHCH 2 O(C 2 h 4 O) a H (a=10), the isopropanol was changed to butyl acetate, the platinum catalyst was platinum chloride in absolute ethanol, and the rest were the same as in Example 1.

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PUM

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Abstract

The invention discloses a preparation method of block water soluble silicone oil of textile softening finishing agent. The prior modified amino water soluble silicone oil has good stability, but enables the hand touch of the processed textile to be greatly reduced because an entrained hydrophilic chain link is still on a lateral chain of polymer. The preparation method comprises four steps: the amidation of amino coupling agent, the preparation of hydrogen terminated methylsiloxane midbody, the preparation of polysiloxane-polyether linear block polymer, and the ammonolysis of block polymer. The block water soluble silicone oil prepared by the invention has the advantages of high concentration and stability, smoothness, and the like.

Description

technical field [0001] The invention relates to the field of high molecular polymers, in particular to a method for preparing block water-soluble silicone oil. Background technique [0002] Amino-modified organosilicon softener is a modified organosilicon fabric softening agent with a relatively high usage rate in the market. The amino group has strong polarity, high reactivity, adsorption, compatibility and emulsification. Used as a fiber finishing agent, it can interact with the active groups on the surface of the fiber, improve the washability, and endow the fabric with properties such as smoothness, softness, wrinkle resistance, and comfortable wearing. The most important softener for fiber and synthetic fiber such as polyester, nylon and acrylic. [0003] Ordinary amino-modified silicone softeners cannot be used directly, and special emulsification processes and technologies are required; moreover, they are prone to yellowing and color change during dyeing and finishi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46D06M15/647
Inventor 曹政王胜鹏宋金星余国平于本成连影
Owner 传化智联股份有限公司
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