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Silicone emulsion, preparation method thereof, and fabric finishing agent

A technology of silicone emulsion and end-capping agent, used in fiber treatment, textile and papermaking, abrasion-resistant fibers, etc., can solve the problem that silicone oil cannot self-emulsify, achieve stable emulsion, small particle size, and improve the degree of yellowing Effect

Active Publication Date: 2018-09-14
科凯精细化工(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to address the problem that existing silicone oils cannot be self-emulsified, and provide a method for preparing a self-emulsifying silicone emulsion

Method used

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  • Silicone emulsion, preparation method thereof, and fabric finishing agent
  • Silicone emulsion, preparation method thereof, and fabric finishing agent
  • Silicone emulsion, preparation method thereof, and fabric finishing agent

Examples

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preparation example Construction

[0026] A preparation method of silicone emulsion, comprising the steps of:

[0027] Mix the aqueous solution of strong basic catalyst, octamethylcyclotetrasiloxane linear body, ammonia type coupling agent, and end-capping agent uniformly, and react at 100-110°C for 4-8 hours to obtain amino silicone oil; Wherein, the mass ratio of the octamethylcyclotetrasiloxane linear body, the ammonia type coupling agent, the end-capping agent and the strong basic catalyst is 30~50:2~10:0.1~06 :0.1~1;

[0028] Mix the amino silicone oil with the dimethylaminoethyl methacrylate solution evenly, and react for 12-20 hours at a temperature of 20-30°C to obtain a modified amino silicone oil, wherein the primary amino group in the amino silicone oil and the The mol ratio of dimethylaminoethyl methacrylate is 1:1-1:1.15;

[0029] Add the modified amino silicone oil dropwise to the epichlorohydrin solution at 55-75°C, react for 3-6 hours, then raise the temperature to 80-90°C, and continue the re...

Embodiment 1

[0052] (1) Preparation of amino silicone oil: Dissolve 0.5g potassium hydroxide in 49g deionized water, then mix with 45g octamethylcyclotetrasiloxane linear body, 5.1g N-β-(aminoethyl)-γ-ammonia Add propylmethyldimethoxysilane and 0.4g hexamethyldisiloxane into a four-necked flask equipped with a stirrer, a reflux condenser and a thermometer, stir and mix evenly, then raise the temperature to 100°C, and react for 6 hours , to obtain amino silicone oil.

[0053] (2) Modification of amino silicone oil: the amino silicone oil obtained in step (1) is added to the ethanol solution of dimethylaminoethyl methacrylate (wherein the primary amino group of amino silicone oil and that of dimethylaminoethyl methacrylate The molar ratio is 1:1), after stirring and mixing evenly, the temperature was raised to 25°C, and the reaction was carried out for 15 hours to obtain the modified amino silicone oil.

[0054] (3) Quaternization treatment: Add the modified amino silicone oil obtained in s...

Embodiment 2

[0058] Embodiment two is basically the same as embodiment one, and the difference with embodiment one is: the consumption of octamethylcyclotetrasiloxane linear body is 35g, N-beta-(aminoethyl)-gamma-aminopropyl methyl The consumption of dimethoxysilane is 8g, and other parts are identical with embodiment one.

[0059] The obtained silicone emulsion is denoted as A2.

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Abstract

The invention relates to the field of textiles, specifically to a preparation method for an organosilicon emulsion. The preparation method comprises the following steps: subjecting an aqueous solution of a highly basic catalyst, a linear compound of octamethylcyclotetrasiloxane, an ammonia type coupling agent and an end-capping reagent to mixing and reaction so as to obtain amino silicon oil; then reacting the amino silicon oil with dimethylaminoethyl methacrylate so as to obtain modified amino silicon oil; and adding the modified amino silicon oil into chloropropylene oxide and carrying out quaternization. Compared with the prior art, the preparation method for the organosilicon emulsion in the invention has the advantages that Michael addition is employed, and a novel preparation method for the organosilicon emulsion is provided; and the prepared organosilicon emulsion does not need emulsification by an emulsifier and can realize self-emulsifying. The invention also discloses the organosilicon emulsion and a fabric finishing agent.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a silicone emulsion, a preparation method thereof, and a fabric finishing agent. Background technique [0002] Silicone oil is a new type of synthetic material with excellent performance, which has the dual characteristics of organic materials and inorganic materials. Due to its diverse physical and chemical properties, it has become an important auxiliary in the textile field. Since silicone oil is non-toxic and non-polluting to the environment, it is also physiologically inert. Therefore, silicone oil is an excellent ecological textile finishing agent. Silicone oil has become the main component of an ideal finishing agent for various high-grade fabrics, and plays an increasingly important role. [0003] However, the existing silicone oil generally requires the use of an emulsifier to emulsify, cannot be self-emulsified, and is inconvenient to use. Contents of the invention...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/388C08G77/26D06M15/643D06M101/32
CPCC08G77/26C08G77/388D06M15/6436D06M2101/32D06M2200/35D06M2200/50
Inventor 任一波周文张萍顾永欢
Owner 科凯精细化工(上海)有限公司
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