Waterborne polyurethane-acrylate emulsion prepared by seed emulsion polymerization method

An emulsion polymerization, water-based polyurethane technology, applied in applications, inks, household appliances, etc., can solve problems such as adverse environmental effects, and achieve the effects of no formaldehyde release, fine particle size, excellent water resistance and friction resistance.

Inactive Publication Date: 2011-06-15
GUANGDONG YINGKE GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the water resistance and friction resistance of the product, N-methylol acrylamide is often introduced into acrylate as a cro

Method used

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  • Waterborne polyurethane-acrylate emulsion prepared by seed emulsion polymerization method
  • Waterborne polyurethane-acrylate emulsion prepared by seed emulsion polymerization method
  • Waterborne polyurethane-acrylate emulsion prepared by seed emulsion polymerization method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0032] Example 1: (PUA-1) The specific method for preparing polyurethane-acrylate emulsion by seed emulsion polymerization is as follows: 1) Preparation of aqueous dispersion of vinyl-terminated network polyurethane

[0033] Put PPG (molecular weight 2000) into a three-necked flask, vacuum dehydrate at 100°C for 2h; cool down to 80°C, add chain extender NPG and TMP, IPDI, keep warm at 85°C for 3h; cool down to 75°C, add hydrophilic monomer DMPA, 80°C heat preservation reaction for 2h; cool down to 65°C, add functional acrylate monomer HEMA and catalyst DBTDL, heat heat reaction for 1.5h. Cool down to 40°C, add mixed butyl acrylate to reduce viscosity, add neutralizer TEA, stir for 5 minutes, add deionized water to disperse into emulsion under high-speed stirring, slowly add hydrazine hydrate, diethylenetriamine and deionized water after 10-15 minutes The mixture was chain-extended and aged at 50°C for 1 hour to obtain vinyl-terminated reticular polyurethane.

[0034]

[0...

example 2

[0038] Example 2: (PUA-2)

[0039] 1) Preparation of vinyl-terminated network polyurethane aqueous dispersion

[0040] Put polytetrahydrofuran ether diol (molecular weight: 2000) into a three-necked flask, dehydrate in vacuum at 100°C for 2h; cool down to 80°C, add chain extender NPG and TMP, IPDI, and keep warm at 85°C for 3h; cool down to 75°C, add pro The water monomer DMPA was kept at 80°C for 2 hours; the temperature was lowered to 65°C, the functional acrylate monomer HEMA and the catalyst DBTDL were added, and the reaction was held for 1.5 hours. Cool down to 40°C, add mixed butyl acrylate to reduce viscosity, add neutralizer TEA, stir for 5 minutes, add deionized water to disperse into emulsion under high-speed stirring, slowly add hydrazine hydrate, diethylenetriamine and deionized water after 10-15 minutes The mixture was chain-extended and aged at 50°C for 1 hour to obtain vinyl-terminated reticular polyurethane.

[0041]

[0042] 2) Preparation of polyuretha...

example 3

[0045] Example 3: (PUA-3)

[0046] 1) Preparation of vinyl-terminated network polyurethane aqueous dispersion

[0047] Put polyethylene adipate diethylene glycol polyester (molecular weight 2000) into a three-necked flask, dehydrate in vacuum at 100°C for 2 hours; cool down to 80°C, add small molecule chain extenders NPG, TMP and IPDI, and keep warm at 85°C for reaction 3h; cool down to 75°C, add hydrophilic chain extender DMPA, keep warm at 80°C for 2h; cool down to 65°C, add functional acrylate monomer HEMA, catalyst DBTDL, keep warm for 1.5h; cool down to 40°C, add mixed butyl acrylate Ester monomer to reduce viscosity, add neutralizer TEA, stir for 5 minutes, add deionized water to disperse into emulsion under high speed stirring, slowly add hydrazine hydrate, diethylenetriamine and deionized water mixture for chain extension after 10-15 minutes, 50℃ After aging for 1 hour, a vinyl-terminated reticular polyurethane can be obtained.

[0048]

[0049] 2) Preparation o...

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Abstract

The invention discloses waterborne polyurethane-acrylate emulsion prepared by the seed emulsion polymerization method. The method comprises the following steps: performing vacuum dehydration treatment to polymer polyol or diol in advance, adding micromolecular chain extender A, adding diisocyanate to react under heat insulation condition; adding hydrophilic chain extender and cosolvent to react; adding functional monomer A and catalyst to react; cooling, adding viscosity reducer and neutralizer to react, adding deionized water while stirring at high speed to obtain emulsion, slowly adding the mixture of micromolecular chain extender B and deionized water to cure and obtain vinyl-terminated reticulated polyurethane emulsion; mixing anionic emulsifier, non-ionic emulsifier and initiator with deionized water, adding acrylate mixed monomer to prepare emulsion fast, then introducing nitrogen, adding reductant to initiate polymerization and ensure that the emulsion has blue fluorescence, then adding vinyl-terminated reticulated polyurethane emulsion, and standing under heat insulation condition to obtain the core-shell type polyurethane-acrylate emulsion. The emulsion disclosed by the invention has good water resistance and wear resistance and meets the requirement of environmental protection.

Description

technical field [0001] The invention relates to a production method of an aqueous polyurethane-acrylate emulsion, in particular to a seed emulsion polymerization method for preparing an aqueous polyurethane-acrylate emulsion. Background technique [0002] With the rapid development of the global economy and the continuous improvement of people's living standards, people's awareness of environmental protection and health is constantly increasing. Water-based ink has received more and more attention because of its excellent environmental protection performance and huge market potential. At present, water-based ink has become the most promising ink variety in the printing industry due to its unique environmental protection advantages. [0003] Ink is mainly composed of two parts: pigment and linking material. The main difference between water-based inks and traditional solvent-based inks is that ① the solvent is different: traditional solvent-based inks use organic solvents a...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08F2/30C08F2/26C08G18/67C09D11/10C09D11/00
Inventor 吕建平刘润林李彬段启勇孙学武
Owner GUANGDONG YINGKE GRP CO LTD
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