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Acrylate emulsion as well as preparation method and application thereof

A technology of acrylate and acrylic monomers, which is applied in coatings and other directions, can solve problems such as low crosslinking efficiency and crosslinking agent residue, and achieve the effects of improving compatibility, increasing hardness, and reducing pollution

Active Publication Date: 2021-03-23
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to overcome the low cross-linking efficiency of the current ketohydrazine cross-linking technology, and the problems of cross-linking agents such as adipic acid hydrazide remaining

Method used

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  • Acrylate emulsion as well as preparation method and application thereof
  • Acrylate emulsion as well as preparation method and application thereof
  • Acrylate emulsion as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0088] 1) Preparation of pre-emulsion A: Under normal temperature, 3 g of sodium dodecyl sulfonate and 135.34 g of deionized water were added to the prematocity tank with a monomer meter, stirrer, and dissolved After the addition of 100 g of styrene and 100 g of methyl methacrylate and 1 g of double acetone acrylamide were added, stirred for 20 min;

[0089] 2) Preparation of pre-emulsion B: Under normal temperature, 1 g of sodium dodecyl sulfonate and 68.34 g of deionized water were added to pre-emulsion with monomer meter, stirrer, and stirred well After the addition of 50 g of 2-methylstyrene and 50 g of methyl methacrylate and 1 g of 2- (ahydrazide) ethylmethyl methacrylic acid, thoroughly stirred for 20 min;

[0090] 3) Pretreatment of pre-emulsion A obtained from step 1) and heating temperature increases to 65 ° C, 0.5 g of potassium sulfate and 20 g of a mixed solution of 20 g of water, and the dropwise time is 2 h, and the addition is 0.5h after the end of the end. , Then ...

Embodiment 2

[0094] 1) Preparation of pre-emulsion A: Under normal temperature, 3 g of sodium dodecyl benzene sulfonate and 1 g of alkyl polyoxyethylene ether LCN407 were added to pre-emulsion with monomer meter and agitator. After 500 g of deionized water, after stirring dissolved, 15 g of 2-methylstyrene and 227 g of methyl methacrylate and 8 g of double acetone acrylamide were sufficiently stirred for 30 min;

[0095] 2) Preparation of pre-emulsion B: Under normal temperature, 1 g of sodium dodecyl sulfonate and 1 g of alkyl polyoxyethylene ether LCN407 were added to pre-emulsion with monomer meter and agitator. After 248 g of deionized water, after stirring dissolved, 60 g of 2-methylstyrene and 56 g of acrylate and 8 g of 2- (ahydrazide) ethyl acrylic acid were added, and stirred for 30 min;

[0096] 3) Step 1) The premixed liquid A obtained by the resulting temperature above 90 ° C, starting the mixed solution of 2.4 g of ammonium sulfate and 24 g of water, and the dropwater is 3 h, and ...

Embodiment 3

[0100] 1) Preparation of pre-emulsion A: Under normal temperature, 6 g of 6 g of sodium dodecyl sulfonate and 500 g of deionized water are added to the prematurated tank with a monomer meter, and the mixture is fully stirred. To sequentially add 227 g of 4-methylstyrene and 15 g of butyl acrylate and 2 g of double acetone acrylamide, thoroughly stirred for 25 min;

[0101] 2) Preparation of pre-emulsion B: Under normal temperature, 9 g of sodium dodecyl sulfonate and 200 g of deionized water are added to pre-emulsion with a monomer tank, stirrer, and thoroughly stirred and dissolved. , 56 g of 4-methylstyrene and 60 g of methacrylate and 2 g of 2- (ahydrazide) ethyl acrylic acid were combined, stirred for 25 min;

[0102] 3) When the pre-emulsion A obtained from step 1) is heated to 80 ° C, and the mixed solution of 0.5 g of ammonium sulfate and 20 g of water is started to initiate polymerization, the dropwise time is 2.5 h, and after the end of the end of the end of 0.8h, then ado...

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Abstract

The invention discloses an acrylate emulsion as well as a preparation method and application thereof. A molecular chain of the prepared acrylate emulsion simultaneously contains a ketone group and a hydrazide group, cross-linking between molecular chains or in the molecular chains can be generated along with the reduction of a PH value in a film forming and drying process, and the acrylate emulsion has excellent resistance, hardness and other properties and can be applied to the fields of metal coatings, wood coatings, textile coatings, furniture coatings, packaging coatings and the like.

Description

Technical field [0001] The present invention belongs to the field of polymer materials, and is related to an acrylate emulsion and a preparation method thereof. Background technique [0002] Acrylate emulsions are widely used in construction coatings, waterproof coatings, wood coatings, metal anti-corrosion, damping coatings, textile coatings, printed coatings, etc. due to their excellent weather resistance, low VOC, excellent gloss and transparency. However, since the acrylate emulsion is used in the production process, it is necessary to use the material containing a hydrophilic group to water, and the presence of the hydrophilic group can cause a natural defect with respect to the oily paint, in order to make up for this Defects, a rear crosslinked group introduced in an acrylate emulsion, which can increase the molecular weight during film formation, and the molecular chain forms a crosslinking system, thereby improving the resistance of the resin. The post-crosslink includes...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/14C08F220/36C08F220/58C08F212/12C08F220/18C09D125/14C09D125/16C09D133/12
CPCC08F212/08C08F220/14C08F212/12C09D125/14C09D125/16C09D133/24
Inventor 周操纪学顺韩克张洁刘姗晋云全胡海东孙家宽
Owner WANHUA CHEM GRP CO LTD
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