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Low-yellowing quaternary ammonium type hydrophilic amino-modified silicone oil emulsion and preparation method thereof

A technology of silicone oil emulsion and amino silicone oil, applied in the directions of improved hand-feeling fibers, textiles and papermaking, fiber processing, etc., can solve the problems of reducing the yellowing of fabric finishing agents, not improving the hydrophilicity, affecting the hydrophilic performance, etc., and achieving excellent Hydrophilic, smooth feel, color reduction effect

Inactive Publication Date: 2017-04-26
WACKER DYMATIC SILICONES SHUNDE CO LTD FOSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the Chinese patent CN101914206A utilizes epichlorohydrin and dimethyl dodecylamine solution to react to obtain a quaternized modified amino silicone oil softener. Due to the introduction of the long chain of dodecyl, the hydrophilic group of the quaternary ammonium salt is hydrophobic chemical, which affects the hydrophilic properties, and the introduction of long chain dodecyl chains also affects the hand feel
Chinese patent CN102021838A uses low-yellowing coupling agents of different structures to prepare amino silicone oil, which effectively reduces the yellowing of fabric finishing agents, but does not improve hydrophilicity
In U.S. Patent US20090274643A1, a tertiary amino ternary copolymerized silicone oil is obtained by reacting epoxy silicone oil and diethylaminopropylamine, and then methyl chloroacetate is used for quaternization reaction to obtain a softener with very good hydrophilicity. Excellent alkali resistance, but poor soft and slippery feel

Method used

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  • Low-yellowing quaternary ammonium type hydrophilic amino-modified silicone oil emulsion and preparation method thereof
  • Low-yellowing quaternary ammonium type hydrophilic amino-modified silicone oil emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] (1) Preparation of low-yellowing amino silicone oil: mix 660 grams of α, ω-hydroxy polydimethylsiloxane (silicone linear body) with 25 grams of N-(γ'-dimethylaminopropyl)-γ - Aminopropylmethyldimethoxysilane, 0.2 grams of 30% aqueous sodium hydroxide solution, 5 grams of hexamethyldisiloxane, reacted at 95 ° C for 3 hours under a vacuum of 100 mbar, neutralized with acetic acid to obtain amino silicone oil.

[0032] (2) Preparation of low-yellowing quaternized amino silicone oil: add 690 grams of amino silicone oil and 12 grams of methyl chloroacetate to 210 grams of isopropanol solution and mix uniformly, react at 80° C. for 8 hours to obtain low Yellowing quaternized amino silicone oil.

[0033] (3) Preparation of low-yellowing quaternary ammonium type hydrophilic amino silicone oil emulsion: 11.6 grams of acid are added to 912 grams of quaternized amino silicone oil, and at 25 ° C under stirring conditions, 1250 grams of deionized water is added dropwise and stirred...

Embodiment 2

[0035] (1) Preparation of low-yellowing amino silicone oil: mix 660 grams of α, ω-hydroxy polydimethylsiloxane (organic silicon linear body) with 25 grams of γ-piperazinylpropylmethyldimethoxysilane , 0.2 g of 30% aqueous sodium hydroxide solution and 5 g of hexamethyldisiloxane were reacted at 95° C. for 3 hours under a vacuum of 100 mbar, and neutralized with acetic acid to obtain amino silicone oil.

[0036] (2) Preparation of low-yellowing quaternized amino silicone oil: add 690 grams of amino silicone oil and 12.9 grams of methyl chloroacetate to 210 grams of isopropanol solution and mix uniformly, react for 8 hours at 80° C. to obtain low Yellowing quaternized amino silicone oil.

[0037] (3) Preparation of low-yellowing quaternary ammonium type hydrophilic amino silicone oil emulsion: 11.6 grams of acid are added to 912 grams of quaternized amino silicone oil, and at 25 ° C under stirring conditions, 1250 grams of deionized water is added dropwise and stirred After 1.5...

Embodiment 3

[0039] (1) Preparation of low-yellowing amino silicone oil: mix 660 grams of α, ω-hydroxypolydimethylsiloxane (organic silicon linear body) with 25 grams of γ-piperidylpropylmethyldimethoxysilane , 0.2 g of 30% aqueous sodium hydroxide solution and 5 g of hexamethyldisiloxane were reacted at 95° C. for 3 hours under a vacuum of 100 mbar, and neutralized with acetic acid to obtain amino silicone oil.

[0040] (2) Preparation of low-yellowing quaternized amino silicone oil: add 690 grams of amino silicone oil and 12.9 grams of methyl chloroacetate to 210 grams of isopropanol solution and mix uniformly, react for 8 hours at 80° C. to obtain low Yellowing quaternized amino silicone oil.

[0041] (3) Preparation of low-yellowing quaternary ammonium type hydrophilic amino silicone oil emulsion: 11.6 grams of acid are added to 912 grams of quaternized amino silicone oil, and at 25 ° C under stirring conditions, 1250 grams of deionized water is added dropwise and stirred After 1.5 ho...

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Abstract

The invention discloses a preparation method of a low-yellowing quaternary ammonium type hydrophilic amino-modified silicone oil emulsion. The preparation method includes the following preparation steps that firstly, amino-modified silicone oil is prepared from alpha,omega-hydroxy polydimethyl siloxane (linear organosilicon), a low-yellowing amino coupling agent, a sealing agent and a basic catalyst, and then the amino-modified silicone oil and methyl chloroacetate are subjected to quaternization. The quaternary ammonium type hydrophilic amino-modified silicone oil emulsion is simple in preparation process, has self-emulsifying performance, and is used for after-finishing of fabrics, and the fabrics are made to have excellent soft and slip hand feeling, and are low in yellowing, small in color alteration and good in hydrophilicity.

Description

technical field [0001] The invention relates to a low-yellowing quaternary ammonium type hydrophilic amino silicone oil emulsion and a preparation method thereof. Background technique [0002] Silicone softener has good softness and smoothness, and is widely used in finishing of various textiles. At present, silicone finishing agents based on various amino-modified silicone oil emulsions are widely used in the post-finishing processing of textiles such as cotton, polyester, rayon, silk and wool. An important part of finishing the field. The 2 amino groups (primary amino group and secondary amino group) and 3 hydrogen atoms on the side chain of amino-modified silicone oil are easily oxidized and decomposed into chromophoric groups under high temperature conditions, and the diamine structure has the effect of synergistically accelerating oxidation, which will Promotes the formation of chromophoric groups, resulting in yellowing or discoloration of finished fabrics. In addit...

Claims

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Application Information

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IPC IPC(8): C08G77/385C08G77/388C08J3/03C08L83/08D06M15/643
CPCC08G77/385C08G77/388C08J3/03C08J2383/08C08L83/08C08L2201/54D06M15/6436D06M2200/50
Inventor 龚涛林芳银亮肖成贵徐小刚周耀靓
Owner WACKER DYMATIC SILICONES SHUNDE CO LTD FOSHAN
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