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A kind of preparation method of modified acrylate emulsion

A technology of acrylate and methacrylate, which is applied in the field of preparation of modified acrylate emulsion, which can solve the problems of insufficient emulsification performance, sticky printing rubbing fastness, and difficulty in meeting requirements, etc., so as to improve printing color fastness and washing fastness, low gel rate and simple method

Active Publication Date: 2016-10-05
SHENZHEN ANPIN SILICONE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Acrylic emulsions are used as printing emulsion binders, which have the advantages of strong adhesion to pigments and fibers, good transparency, good weather resistance, and good film-forming performance. Disadvantages of brittleness, stickiness at high temperature, poor printing rubbing fastness, and rough hand feeling
In the swimsuit printing process, because swimsuits need to withstand long-term immersion in water during use, there are high requirements for printing fastness, water resistance, and anti-adhesion. At the same time, swimsuits are made of high-elastic special fabrics, which require printing emulsions to form films Afterwards, it has good rebound performance, but the acrylic printing emulsion in the prior art is difficult to meet the requirements
[0004] At the same time, the preparation of the existing acrylic emulsion usually adopts the semi-continuous emulsion polymerization method, including the steps of priming-heating initiation-dropping-insulation-post-treatment, that is, water, emulsifier and part of the mixed monomer and initiator are mixed and reacted first. Add the remaining initiator and mixed monomer dropwise after a certain period of time, and continue the reaction until the end of the polymerization. This method has the advantages of stable polymerization, uniform product, small particle size, simple and flexible operation, etc., but in order to improve the stability of the emulsion in the acrylic acid synthesis system , Water resistance after film formation, etc. When adding a reactive emulsifier, the reactive emulsifier is prone to self-polymerization during the polymerization reaction process, and cannot fully exert its emulsifying performance

Method used

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  • A kind of preparation method of modified acrylate emulsion
  • A kind of preparation method of modified acrylate emulsion
  • A kind of preparation method of modified acrylate emulsion

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Prepare the modified acrylate emulsion, comprising the following steps:

[0034] Stir 30g of n-butyl acrylate, 30g of methyl methacrylate and 30g of vinyl-terminated polydimethylsiloxane evenly to obtain a mixture with a viscosity of 20mPa·s at 25°C; among them, vinyl-terminated polydimethylsiloxane The vinyl mass content of the alkane is 0.2%, and the viscosity at 25°C is 1500mPa·s;

[0035] Add the mixture, 145g of n-butyl acrylate, 110g of vinyl acetate, 55g of methyl methacrylate, 40g of acrylonitrile, 6g of acrylic acid, 10g of glycidyl methacrylate, 5g of diacetone acrylamide, and 4g of adipic dihydrazide Pre-emulsify in 180g of water containing 3g of emulsifier to obtain a pre-emulsion; wherein, the emulsifier is obtained by compounding Clarient's Emulsogen EPA073 and Clarient's Emulsogen LXN407 at a mass ratio of 3:5;

[0036] Mix 2g of allyloxy hydroxypropyl sodium sulfonate, 5g of emulsifier and 280g of water evenly and then heat up to 75°C, add 10g of ethyl ...

Embodiment 2

[0047] Prepare the modified acrylate emulsion, comprising the following steps:

[0048] Stir 30g of n-butyl acrylate, 50g of methyl methacrylate and 40g of vinyl-terminated polydimethylsiloxane evenly to obtain a mixture with a viscosity of 20mPa·s at 25°C; among them, vinyl-terminated polydimethylsiloxane The vinyl mass content of the alkane is 0.3%, and the viscosity at 25°C is 1000mPa·s;

[0049] The mixture, n-butyl acrylate 200g, vinyl acetate 75g, methyl methacrylate 20g, acrylonitrile 20g, acrylic acid 9g, glycidyl methacrylate 8g, diacetone acrylamide 6g, adipate dihydrazide 4.8 g was added into 180 g of water containing 4 g of emulsifier for pre-emulsification to obtain a pre-emulsion; wherein, the emulsifier was obtained by compounding Clarient's Emulsogen EPA073 and Clarient's Emulsogen LXN407 at a mass ratio of 1:2;

[0050] Mix 1g of allyloxy hydroxypropyl sodium sulfonate, 2g of emulsifier and 280g of water evenly, then heat up to 75°C, add 14g of ethyl acrylate...

Embodiment 3

[0055] Prepare the modified acrylate emulsion, comprising the following steps:

[0056] Stir 40g of n-butyl acrylate, 20g of methyl methacrylate and 30g of vinyl-terminated polydimethylsiloxane evenly to obtain a mixture with a viscosity of 20mPa·s at 25°C; wherein, vinyl-terminated polydimethylsiloxane The vinyl mass content of alkanes is 0.4%, and the viscosity at 25°C is 1500mPa·s;

[0057] The above mixture, n-butyl acrylate 170g, vinyl acetate 100g, methyl methacrylate 60g, acrylonitrile 20g, acrylic acid 6g, glycidyl methacrylate 10g, diacetone acrylamide 5g, adipate dihydrazide 4g Add 180g of water containing 3g of emulsifier for pre-emulsification to obtain a pre-emulsion; wherein, the emulsifier is obtained by compounding Clarient's Emulsogen EPA073 and Clarient's Emulsogen LXN407 at a mass ratio of 3:5;

[0058] After mixing 2g allyloxy hydroxypropyl sodium sulfonate, 5g emulsifier and 280g water, the temperature was raised to 75°C, and 8g ethyl acrylate, 6g methyl ...

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Abstract

The invention discloses a preparation method of a modified acrylate emulsion, which comprises acrylate, methacrylate, vinyl acetate, acrylonitrile, acrylic acid, silicone modified monomer, crosslinking monomer and surface active monomer. Obtained by emulsion polymerization, where the silicone-modified monomer is a linear organopolysiloxane containing silicon-bonded alkenyl groups, after preparation of a seed emulsion with surface-active monomers, acrylates and / or methacrylates Polymerization can reduce the amount of emulsifier used, making the polymerization stable and the gel rate low.

Description

technical field [0001] The invention relates to an emulsion polymerization method, in particular to a preparation method of a modified acrylate emulsion. Background technique [0002] Pigment printing refers to the printing method that uses adhesives to fix pigments that are insoluble in water and have no affinity and reactivity to fabric fibers on fabrics, and then dry them into films to achieve coloring and form different patterns. Pigment printing has a simple process and low cost. After printing, it only needs to be dried and fixed without washing, saving water, electricity, gas, and less waste water. It has become the main method for printing patterns on various fabrics (such as bed sheets, cultural shirts, decorative cloth, etc.). method. [0003] Acrylic emulsions are used as printing emulsion binders, which have the advantages of strong adhesion to pigments and fibers, good transparency, good weather resistance, and good film-forming performance. The shortcomings o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F290/06C08F220/18C08F220/14C08F218/08C08F220/32C08F2/24
Inventor 丁小卫雷生山祝琳唐建振
Owner SHENZHEN ANPIN SILICONE MATERIAL
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