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High-gloss acrylic latex as well as preparation method and application thereof

A technology of acrylic latex and acrylic acid, which is applied in the field of polymer materials, can solve problems such as insufficient gloss and adhesion, achieve the effects of improving gloss and adhesion, solving insufficient gloss and adhesion, and excellent adhesion

Pending Publication Date: 2022-05-10
江苏富琪森新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide high-gloss type acrylic latex, to solve technical problems such as lack of gloss and adhesion of acrylic latex products in the prior art

Method used

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  • High-gloss acrylic latex as well as preparation method and application thereof

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preparation example Construction

[0067] In a specific embodiment of the present invention, the preparation method of the water-dispersed alkyd-acrylic acid hybrid secondary dispersion includes: taking the alkyd resin intermediate and fatty acid into the reaction bottle, and then raising the temperature to 130-150°C, Then drop the mixture of the monomer mixture, the initiator and the chain transfer reagent, and the dropping time is 2 to 3 hours. After the dropping, the initiator is added, and the heat preservation is continued for 2 to 3 hours; after the heat preservation is completed, add fatty acid, Esterification catalyst and antioxidant, heat up to 180±5°C for esterification and dehydration reaction until the acid value is between 30 and 60 mgKOH / g, vacuum out the solvent and cool down, add co-solvent when the temperature drops to 140±5°C, continue Cool down to 80±5°C, add neutralizer for neutralization for 0.5-1 hour, then add water to invert and dilute.

[0068] In a specific embodiment of the present in...

Embodiment 1

[0089] The present embodiment provides the preparation method of high light type acrylic latex, comprises the steps:

[0090] (1) Preparation of water-dispersible alkyd-acrylic acid hybrid secondary dispersion

[0091] (a) Preparation of alkyd resin intermediate: 109.3 parts of soybean oil fatty acid, 172.9 parts of trimethylolpropane, 143.2 parts of phthalic anhydride, 0.4 part of triphenylphosphine, 0.8 part of hypophosphorous acid (50wt% aqueous solution) and 12 parts of xylene Put it into a reaction tank, raise the temperature to 220-230° C. for esterification and dehydration until the acid value is lower than 5 mgKOH / g, cool down and add 45 parts of xylene to discharge.

[0092] (b) Preparation of water-dispersed alkyd-acrylic acid hybrid secondary dispersion: Take 110 parts of alkyd resin intermediate and 48 parts of soybean oil fatty acid prepared in step (a) and add them to the reaction bottle, then heat up to 130-150 ℃, then dropwise added 47.35 parts of methyl metha...

Embodiment 2

[0098] The present embodiment provides the preparation method of high light type acrylic latex, comprises the steps:

[0099] (1) Preparation of water-dispersible alkyd-acrylic acid hybrid secondary dispersion

[0100] (a) Preparation of alkyd resin intermediate: 200 parts of soybean oil fatty acid, 54 parts of neopentyl glycol, 62.24 parts of pentaerythritol, 66.12 parts of phthalic anhydride, 49.48 parts of isophthalic acid, 16 parts of benzoic acid, 0.4 part of triphenylphosphine , 0.8 parts of hypophosphorous acid (50wt% aqueous solution) and 12 parts of xylene are put into the reaction tank, the temperature is raised to 220~230 ℃ for esterification and dehydration until the acid value is lower than 10mgKOH / g, the xylene is extracted, and the temperature is discharged.

[0101] (b) Preparation of water-dispersed alkyd-acrylic acid hybrid secondary dispersion: 142.35 parts of alkyd resin intermediate and 50.35 parts of dipropylene glycol butyl ether prepared in step (a) wer...

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Abstract

The invention relates to the technical field of high polymer materials, in particular to high-gloss acrylic latex as well as a preparation method and application thereof. The high-gloss acrylic latex is mainly prepared from the following components in parts by weight: 5 to 40 parts of an acrylic monomer, 0 to 30 parts of a vinyl monomer, 1 to 20 parts of a water dispersible alkyd-acrylic hybrid secondary dispersion, 0.3 to 3 parts of an emulsifier, 0.19 to 0.8 part of an initiator, 0.01 to 0.05 part of a buffering agent, 0 to 0.1 part of a bactericide and 45 to 55 parts of water. According to the high-gloss acrylic latex disclosed by the invention, the water-dispersed alkyd-acrylic hybrid secondary dispersion is used as an emulsifier in acrylic emulsion polymerization, and is matched with other components, so that the glossiness, adhesive force and the like after film formation can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high-gloss acrylic latex and its preparation method and application. Background technique [0002] Compared with traditional solvent-based acrylic resins, water-based acrylic resins are favored by people because of their advantages of using water as a solvent, being non-toxic and tasteless, and not polluting the environment. It has become the main direction of the current development of the coatings industry. [0003] Although water-based acrylic resin has the advantages of no pollution, stability, weather resistance, light resistance, and good chemical resistance, the shortcomings of acrylic latex products such as insufficient gloss and insufficient adhesion limit its application in the field of surface coatings. Applications. [0004] In view of this, the present invention is proposed. Contents of the invention [0005] The purpose of the present invention is to...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F220/18C08F212/08C08F230/08C08F220/06C08F283/01C08F2/24
CPCC08F220/14C08F283/01C08F2/24C08F220/1804C08F212/08C08F230/085C08F220/06C08F220/1811
Inventor 邓煜东闫磊
Owner 江苏富琪森新材料有限公司
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