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Hydroxyl water-based acrylate polymer and preparation method thereof

A technology of water-based acrylate and hydroxyl-containing acrylate, applied in the direction of graft polymer adhesives, adhesive types, adhesives, etc., can solve problems such as high brittleness, and achieve low solvent content, high molecular weight, and high gloss Effect

Inactive Publication Date: 2020-04-28
TAICANG YUNTONG BIOCHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a hydroxyl water-based acrylate polymer and its preparation method, which uses long-chain alkyl silanes to modify acrylate monomers to improve its brittleness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Preparation of long-chain alkylsilane-modified acrylate monomers: add 50 g of methyl acrylate and 30 g of water into the reactor, start stirring, wait until the temperature rises to 90° C., add dropwise 10 ml of an aqueous solution containing 1% ammonium persulfate , continue to stir and add 30 g of dodecylsilane, stir and keep warm for 5 hours to obtain dodecylsilane-modified methyl acrylate monomer.

[0023] (2) Preparation of hydroxyl-containing acrylate aqueous dispersion: add 15 g of isopropanol to the reaction vessel, stir and heat up to 120° C., dropwise add 20 g of hydroxypropyl (meth)acrylate monomer, 3 g of acrylic acid monomer, A mixture consisting of 30g of dodecylsilane-modified methyl acrylate monomer and 2g of azobisisobutyronitrile, the time for the dropwise addition is 2h. A mixture of isobutyronitrile and 15g of isopropanol was added dropwise for 0.5 hours, and then kept for 2 hours to obtain a hydroxyl-containing acrylate resin. The temperature wa...

Embodiment 2

[0027] (1) Preparation of long-chain alkylsilane-modified acrylate monomers: add 50 g of methyl acrylate and 30 g of water into the reactor, start stirring, wait until the temperature rises to 90° C., add dropwise 10 ml of an aqueous solution containing 1% ammonium persulfate , continue to stir and add 30 g of hexadecylsilane, stir and keep warm for 5 hours to obtain hexadecylsilane-modified methyl acrylate monomer.

[0028] (2) Preparation of hydroxyl-containing acrylate aqueous dispersion: add 20 g of propylene glycol methyl ether into the reaction vessel, stir and heat up to 100° C., dropwise add 20 g of hydroxyethyl (meth)acrylate monomer, 3 g of acrylic acid monomer, A mixture consisting of 30g of hexadecylsilane-modified methyl acrylate monomer and 2g of azobisisobutyronitrile, the dropwise addition time is 3h, after the dropwise addition, keep warm for 0.5h, and then add 2g of azobisisobutyronitrile dropwise at 100°C. A mixture of isobutyronitrile and 10g of propylene g...

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Abstract

The invention discloses a hydroxyl water-based acrylate polymer and a preparation method thereof. According to the hydroxyl water-based acrylate polymer disclosed by the invention, an acrylate monomeris modified by adopting long-chain alkyl silane, so that the problem of high brittleness is improved. The hydroxyl water-based acrylate polymer is prepared by two steps, namely a specific hydroxyl-containing acrylate aqueous dispersion is firstly prepared, and then free radical polymerization is performed by using an acrylate monomer and different initiators, thereby obtaining the hydroxyl-containing water-based acrylate polymer which has the advantages of dispersity and high gloss of the aqueous dispersion, and also has the advantages of low solvent contents and higher molecular weight of the emulsion type water-based acrylate polymer.

Description

technical field [0001] The invention relates to a hydroxyl water-based acrylate polymer and a preparation method thereof, belonging to the technical field of acrylate polymers. Background technique [0002] At present, plastic adhesives mainly include acrylate adhesives, polyurethane adhesives, modified EVA adhesives, chlorinated propylene-based adhesives, etc. Among them, the hydroxyl-containing water-based acrylate polymer has high gloss, good color retention, and weather resistance. Well, it is widely used in the fields of two-component waterborne polyurethane coatings and amino baking coatings. However, the current hydroxyl-containing waterborne acrylate polymer still has the problem of high brittleness after coating, and the problem of easy cracking after long-term use. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a hydroxyl water-based acrylate polymer and a preparation method thereof, in...

Claims

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Application Information

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IPC IPC(8): C08F275/00C08F230/08C09J151/00
CPCC08F275/00C09J151/003C08F230/08
Inventor 张卫东
Owner TAICANG YUNTONG BIOCHEM ENG
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