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Preparation of block water-soluble silicon oil

A water-soluble silicone oil and block technology, which is applied in textiles, papermaking, fiber treatment, etc., can solve the problems of fabric hand feeling decline, improve self-emulsification performance, solve the problem of easy demulsification and convenient use

Inactive Publication Date: 2011-05-18
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] Amidate 20 grams of γ-aminopropylmethyldimethoxysilane and 10 grams of formic acid (98% purity) in 150 grams of toluene, and stir (100 revolutions / min) for 1 hour at a temperature of 85°C. , Distilled water azeotropically with toluene (85°C), and then vacuumed out unreacted formic acid to obtain an amidated coupling agent.

[0030] (2) Preparation of hydrogen-terminated methyl siloxane intermediate

[0031] Put 80 grams of octamethylcyclotetrasiloxane and 20 grams of 1,1,3,3-tetramethyldisiloxane into a four-necked bottle, and simultaneously add 5 grams of the above two raw materials prepared in step (1) Amidated coupling agent, stir and react for 0.5h (80 revolutions per minute) at a temperature of 60°C, add 0.5 g of concentrated sulfuric acid, and perform an equilibrium reaction at a temperature of 70°C for 10 hours, and then vacuum to remove low molecular weight substances. The hydrogen-terminated methyl siloxane i...

Embodiment 2

[0037] Change 20 grams of γ-aminopropyl methyl dimethoxysilane in Example 1 to 20 grams of γ-aminopropyl ethyl dimethoxy silane, and 80 grams of octamethylcyclotetrasiloxane to 80 Grams of low-viscosity hydroxy silicone oil (25℃, 50mp*s), 0.5g of concentrated sulfuric acid changed to 0.4g of trifluoromethanesulfonic acid, allyl polyether used CH 2 =CHCH 2 O(C 2 H 4 O) a H(a=20), the isopropanol was changed to toluene, the platinum catalyst was a solution of chloroplatinic acid in isopropanol, and the rest were the same as in Example 1.

Embodiment 3

[0039] Replace 20 grams of γ-aminopropylmethyldimethoxysilane in Example 1 with 20 grams of γ-aminoethylmethyldimethoxysilane, and change 80 grams of octamethylcyclotetrasiloxane to 80 G low-viscosity hydroxy silicone oil (25℃, 70mp*s), 0.5 g concentrated sulfuric acid changed to 0.3 g activated clay, allyl polyether used CH 2 =CHCH 2 O(C 2 H 4 O) a H (a=10), isopropanol was changed to butyl acetate, platinum chloride was used as the absolute ethanol solution of platinum chloride, 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 silicone softener is a modified silicone fabric softening agent with a higher 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 to improve washing resistance, and endow the fabric with slippery, soft, wrinkle-resistant, and comfortable wearing characteristics. It is natural for cotton, linen, silk, woolen products, etc. The most important softener for fibers and synthetic fibers such as polyester, nylon, and acrylic. [0003] Ordinary amino-modified silicone softener cannot be used directly, it needs special emulsification process and technology; and it is easy to turn yellow during dyeing and finishing pr...

Claims

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Application Information

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Patent Type & Authority Patents(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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