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Preparation method of waterborne polyurethane acrylate printing binding agent

A polyurethane acrylate and water-based polyurethane technology, which is applied in the field of preparation of water-based polyurethane acrylate printing adhesives, can solve problems such as poor back tackiness, poor hydrophobic performance, and stiff hand feeling, and achieve increased surface roughness and good hydrophobic performance , good flexibility

Active Publication Date: 2019-02-15
ZHEJIANG KEFENG ORGANIC SILICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor hydrophobic performance, poor back tackiness, and stiff hand feeling of acrylate polymers in the prior art, a water-based polyurethane acrylate printing adhesive with a three-layer structure and superhydrophobicity is proposed.

Method used

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  • Preparation method of waterborne polyurethane acrylate printing binding agent
  • Preparation method of waterborne polyurethane acrylate printing binding agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: the preparation steps of water-based polyurethane acrylate printing adhesive are as follows:

[0036] (1) Put polytetrahydrofuran ether glycol into a drying oven at 70°C for dehydration and oxygen removal for 1 hour;

[0037](2) Add 50 g of the first monomer composition to 200 g of deionized water, the mass ratio of the first monomer composition is 40 parts of polytetrahydrofuran ether glycol, 50 parts of isophorone diisocyanate, polydimethyl 10 parts of siloxane, then add 3.2g of 1,4-butanediol, 0.8g of bismethylolpropionic acid, 1.5g of dibutyltin dilaurate, under argon protection, react at 60°C for 1.2h to obtain polyurethane prepolymerized thing;

[0038] (3) Add 3.2 g of hydroxyethyl methacrylate to the polyurethane prepolymer, and react for 0.5 h at 60° C. to obtain a double-bond-terminated polyurethane;

[0039] (4) adding 15g of neutralization degree is 90% diethylamine aqueous solution, obtains water-based polyurethane;

[0040] (5) Add 65 g of...

Embodiment 2

[0047] Embodiment 2: the preparation steps of water-based polyurethane acrylate printing adhesive are as follows:

[0048] (1) Put polytetrahydrofuran ether glycol into a drying oven at 80°C for dehydration and oxygen removal for 2 hours;

[0049] (2) Add 70 g of the first monomer composition to 300 g of deionized water, the mass ratio of the first monomer composition is 50 parts of polytetrahydrofuran ether glycol, 30 parts of isophorone diisocyanate, polydimethyl 20 parts of siloxane, followed by adding 4g of 1,4-butanediol, 1.3g of bismethylolpropionic acid, 2.1g of dibutyltin dilaurate, protected by argon, reacted at 70°C for 2h to obtain a polyurethane prepolymer;

[0050] (3) Add 4.1 g of hydroxyethyl methacrylate to the polyurethane prepolymer, and react for 1 h at 70° C. to obtain double-bond-terminated polyurethane; (4) add 40 g of diethylamine aqueous solution with a neutralization degree of 95% to obtain Waterborne polyurethane;

[0051] (5) Add 95g of the second ...

Embodiment 3

[0058] Embodiment 3: the preparation steps of water-based polyurethane acrylate printing adhesive are as follows:

[0059] (1) Put polytetrahydrofuran ether glycol into a drying oven at 75°C for dehydration and oxygen removal for 1.5 hours;

[0060] (2) Add 85g of the first monomer composition to 350g of deionized water, the mass ratio of the first monomer composition is 60 parts of polytetrahydrofuran ether glycol, 30 parts of isophorone diisocyanate, polydimethyl 10 parts of siloxane, followed by adding 4.6g of 1,4-butanediol, 3.1g of bismethylolpropionic acid, 2.3g of dibutyltin dilaurate, protected by argon, reacted at 80°C for 3h to obtain a polyurethane prepolymer ;

[0061] (3) Add 2.1 g of hydroxyethyl methacrylate to the polyurethane prepolymer and react for 1.5 h at 80° C. to obtain a double-bond-terminated polyurethane;

[0062] (4) adding 30g of neutralization degree is 98% diethylamine aqueous solution, obtains water-based polyurethane;

[0063] (5) Add 120 g o...

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Abstract

The invention relates to a pigment printing binding agent, in particular to a preparation method of a waterborne polyurethane acrylate printing binding agent. The preparation method comprises the following steps: 1), adding first monomer composition to deionized water, adding 1,4-butanediol, 2,2-bis(hydroxymethyl)propionic acid and dibutyltin dilaurate for reaction to obtain a polyurethane prepolymer; 2), adding hydroxyethyl methacrylate to the polyurethane prepolymer to obtain double bond terminated polyurethane; 3), adding second monomer composition to N,N-dimethylacetamide to obtain an emulsifier; 4), adding the emulsifier and glycidyl methacrylate to waterborne polyurethane to obtain waterborne polyurethane acrylate emulsion; 5), coating the emulsion with silicon dioxide particles. Thebinding agent has good flexibility, and binding strength between layers is larger; moreover, a rough surface is formed by fluorine-containing acrylate and the silicon dioxide particles, and the binding agent has better hydrophobic performance.

Description

technical field [0001] The invention relates to a pigment printing adhesive, in particular to a preparation method of a water-based polyurethane acrylate printing adhesive. Background technique [0002] Acrylic adhesives have received great attention since then due to their many advantages, such as high bonding performance, fast curing speed, wide adaptability, excellent mechanical properties, and no selectivity to bonding objects. Many defects are also exposed, such as sticky film, poor water resistance and temperature resistance, poor moisture permeability and air permeability, low temperature film forming property, poor anti-back tack at high temperature, relatively low elongation, etc. In response to these problems, many modification studies have been carried out on the structure of this type of adhesive, but most of the modification studies are only aimed at a certain defect, and can simultaneously improve properties such as water resistance, temperature resistance and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/52D06P1/673C08F283/00C08F220/14C08F220/24C08G18/75C08G18/67C08G18/66C08G18/61C08G18/48C08G18/34C08G18/32
CPCC08F283/008C08G18/3206C08G18/348C08G18/4854C08G18/61C08G18/672C08G18/755D06P1/525D06P1/67383C08F220/14C08F220/24C08G18/6692C08G18/6674C08G18/48
Inventor 沈俊杰吴华熊春贤章云菊陈永姣崔松松
Owner ZHEJIANG KEFENG ORGANIC SILICON CO LTD
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