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A kind of preparation method and product thereof of elastic cross-linked water-resistant polyurethane-modified polyacrylate emulsion

A technology of polyacrylate emulsion and polyurethane modification, applied in the field of polyurethane modified polyacrylate polymer emulsion, can solve the problems of poor adjustability, reduced water resistance of material film, formaldehyde release, etc., to improve flexibility and extensibility , the effect of eliminating the reduction of water resistance and excellent water resistance

Active Publication Date: 2021-01-26
广东奕美化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the formulation of this method lacks functional polyurethane monomers and cross-linking acrylate monomers; the elasticity of polyurethane chain links is not only poor in adjustability, but also the polyether structure in it will cause the problem of reduced water resistance of the material film ; In addition, the oily initiator in the latex particles can also cause the polymerization reaction speed to be too fast, and the controllability of the reaction is not good; the dispersant polyvinyl alcohol in the system also has the problem of formaldehyde release

Method used

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  • A kind of preparation method and product thereof of elastic cross-linked water-resistant polyurethane-modified polyacrylate emulsion
  • A kind of preparation method and product thereof of elastic cross-linked water-resistant polyurethane-modified polyacrylate emulsion

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Effect test

Embodiment 1

[0070] Embodiment 1 The preparation method of the water immersion resistant polyurethane modified polyacrylate emulsion with elastic crosslinking of the present invention

[0071] The concrete steps of this preparation method:

[0072] (1) The step of bulk polymerization, which reacts polyether diol, polyester diol, diisocyanate, chain extender, monoglyceride stearate, polyolefin, and polymerization catalyst to obtain a polyurethane prepolymer; Specifically:

[0073] (1.1) Put polyether diol, polyester diol, monoglyceride stearate, polyolefin, chain extender, and diisocyanate into the reaction device, heat to 75°C, stir and keep warm for 30 minutes;

[0074] (1.2) Add a polymerization catalyst to the system in step (1.1), control the temperature to 85° C., stir and keep warm for 100 minutes to prepare a polyurethane prepolymer.

[0075] (2) the step of capping, this step reacts polyurethane prepolymer and capping agent, makes polyurethane active monomer; Be specifically:

...

Embodiment 2

[0092] Embodiment 2 The preparation method of the water immersion resistant polyurethane modified polyacrylate emulsion with elastic crosslinking of the present invention

[0093] The concrete steps of this preparation method:

[0094] (1) The step of bulk polymerization, which reacts polyether diol, polyester diol, diisocyanate, chain extender, monoglyceride stearate, polyolefin, and polymerization catalyst to obtain a polyurethane prepolymer; Specifically:

[0095] (1.1) Put polyether diol, polyester diol, monoglyceride stearate, polyolefin, chain extender, and diisocyanate into the reaction device, heat to 70°C, stir and keep warm for 40 minutes;

[0096] (1.2) Add a polymerization catalyst to the system in step (1.1), control the temperature at 80-85° C., stir and keep warm for 120 minutes to prepare a polyurethane prepolymer.

[0097] (3) The step of capping, this step reacts polyurethane prepolymer and capping agent, makes polyurethane active monomer; Be specifically: ...

Embodiment 3

[0113] Embodiment 3 The preparation method of the water immersion resistant polyurethane modified polyacrylate emulsion with elastic crosslinking of the present invention

[0114] The concrete steps of this preparation method:

[0115] (1) The step of bulk polymerization, which reacts polyether diol, polyester diol, diisocyanate, chain extender, monoglyceride stearate, polyolefin, and polymerization catalyst to obtain a polyurethane prepolymer; Specifically:

[0116] (1.1) Put polyether diol, polyester diol, monoglyceride stearate, polyolefin, chain extender, and diisocyanate into the reaction device, heat to 75-80°C, stir and keep warm for 20 minutes;

[0117] (1.2) Add a polymerization catalyst to the system in step (1.1), control the temperature at 85-90° C., stir and keep warm for 80 minutes to prepare a polyurethane prepolymer.

[0118] (4) The step of capping, this step reacts polyurethane prepolymer and capping agent, makes polyurethane active monomer; Be specifically...

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Abstract

The invention relates to a method for preparing a water-immersion-resistant polyurethane-modified polyacrylate emulsion with elastic crosslinking and its product. The preparation method comprises the following steps: raw material preparation: polyurethane monomer, polyacrylate monomer, functional monomer, auxiliary agent and water; bulk polymerization; end capping; emulsification; emulsion polymerization to prepare elastic cross-linked water immersion resistant polyurethane Modified polyacrylate emulsion. A certain density of polyurethane long-chain cross-linking, an appropriate amount of cross-linking active groups and water-repellent side long chains are introduced into the molecule of the material, which can endow various textile coatings or pigment printing films with excellent water immersion resistance and good coloring Fastness, remarkable flexibility and certain water repellency and anti-fouling ability have good market prospects; the product is safe and environmentally friendly, and easy to use. It can be used in processing fields such as finishing of various substrates, textile bonding, pigment printing, and pigment dyeing.

Description

technical field [0001] The invention relates to a polyurethane modified polyacrylate polymer emulsion suitable for processing fields such as coating of various substrates, textile bonding, paint printing, paint dyeing, etc., in particular to a water immersion resistant polyurethane modified poly Preparation method and product of acrylate emulsion. Background technique [0002] At present, polyacrylate polymer emulsions are often used in the finishing of various substrates, textile bonding, pigment printing and pigment dyeing. In order to solve the problems of poor elasticity, fatigue, low elongation and water immersion resistance of traditional polyacrylate polymer materials, polyurethane-modified polyacrylate polymer materials have developed rapidly. The modification of polyacrylate polymers by polyurethane is usually carried out by physical blending or chemical copolymerization, grafting, end-capping and other methods. [0003] At present, the preparation methods of poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F220/18C08F220/14C08F212/08C08F220/06C08G18/75C08G18/67C08G18/66C08G18/48C08G18/42C08G18/62C08G18/34C08G18/32
CPCC08F283/008C08G18/3206C08G18/348C08G18/4018C08G18/4063C08G18/4238C08G18/4825C08G18/4854C08G18/6692C08G18/672C08G18/755C08F220/1804
Inventor 权衡杨志秋金光亚倪丽杰周文师刘迪亚毕曙光周文斐崔向海
Owner 广东奕美化工科技有限公司
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