Preparation method of elastically-crosslinked water-fast polyurethane modified polyacrylate emulsion and product prepared by using preparation method

A polyacrylate emulsion and polyurethane modification technology, 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 , Eliminate the effect of reducing water resistance and excellent water resistance

Active Publication Date: 2018-09-28
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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  • Preparation method of elastically-crosslinked water-fast polyurethane modified polyacrylate emulsion and product prepared by using preparation method
  • Preparation method of elastically-crosslinked water-fast polyurethane modified polyacrylate emulsion and product prepared by using preparation method

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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 preparation method of an elastically-crosslinked water-fast polyurethane modified polyacrylate emulsion and a product prepared by using the preparation method. The preparation method comprises the following steps: preparing for raw materials including a polyurethane monomer, a polyacrylate monomer, a functional monomer, an adjuvant and water; carrying out bulk polymerization; carrying out blocking; carrying out emulsion; and carrying out emulsion polymerization to prepare the elastically-crosslinked water-fast polyurethane modified polyacrylate emulsion. A polyurethane long-chain crosslink with a certain density, a moderate amount of crosslinked active groups and a water-repellent side long chain are introduced into a molecule of the material, so that various textile coatings or pigment printing glue films have excellent water fastness, good color fastness, remarkable flexibility as well as certain water repellency and antifouling ability, so that the elastically-crosslinked water-fast polyurethane modified polyacrylate emulsion has a good market prospect; and the product is safe, environment-friendly and convenient to use and can be used for the field ofvarious substrate processing such as coating, textile adhesion, 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 Applications(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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