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Acrylic emulsion and application thereof

A technology of acrylic emulsion and methacrylic acid, applied in the field of coatings, can solve the problems that the color and texture of the paint film, the water resistance of the emulsion, the resistance to water white difference, and the stain resistance are difficult to meet the standard, and achieve excellent scrub resistance. , the effect of good transparency and excellent stain resistance

Active Publication Date: 2020-06-16
江门市金桥新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high price of dumb powder leads to an increase in cost; at the same time, the powder bulk density is low, which is easy to cause dust pollution during use
[0005] (2) In the case of low gloss, the transparency is poor, and the color and texture of the underlying paint film cannot be fully displayed; and it is easy to delaminate after long-term storage
[0006] (3) The existing emulsion has problems of water resistance and water whitening difference, and it is easy to turn white when exposed to water
[0007] (4) As an overlay application, its stain resistance performance is difficult to meet the standard. When the paint film encounters stains such as children's watercolor pens, it is easy to penetrate into the paint film and cannot be removed, leaving obvious marks on the paint film

Method used

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  • Acrylic emulsion and application thereof
  • Acrylic emulsion and application thereof
  • Acrylic emulsion and application thereof

Examples

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preparation example Construction

[0073] The preparation method of the acrylic acid emulsion described in any one of the above-mentioned embodiments in the present invention comprises the following steps:

[0074] Mix 83% water, 50% emulsifier, and PTF thickener, stir, and raise the temperature to 82°C-85°C to obtain mixture A;

[0075] Dissolving 50% of the initiator with 2% of water to obtain initiator solution 1, which is set aside; and dissolving 50% of the initiator with 5% water to obtain initiator solution 2, which is set aside;

[0076] Mix 10% water and the remaining 50% emulsifier with hard monomers, soft monomers, functional monomers, and part of the silane coupling agent, fully stir and emulsify to obtain mixture B, and set aside;

[0077] Under the condition of 82°C to 85°C, add initiator solution 1 to the mixture A, keep warm for 2 minutes, then drop part of the initiator solution 2 and part of the mixture B into the system at the same time, the dropping time is 90 minutes, Obtain mixture C;

...

Embodiment 1

[0100] This embodiment provides an acrylic emulsion and its application.

[0101] (1) The composition of acrylic emulsion is as follows:

[0102]

[0103]

[0104] (2) Preparation of acrylic emulsion

[0105] Mix 83% of water, 50% of emulsifier SR-10, and PTF thickener, stir evenly, and heat up to 82°C to 85°C to obtain mixture A;

[0106] Dissolving 50% sodium persulfate with 2% water to obtain initiator solution 1, and set aside; and dissolving 50% sodium persulfate with 5% water to obtain initiator solution 2, set aside;

[0107] Mix 10% of water, the remaining 50% of emulsifier with methyl methacrylate, isooctyl acrylate, acrylic acid, acrylamide and silane coupling agent A-171, fully stir and emulsify to obtain mixture B, set aside;

[0108] Under the condition of 82°C to 85°C, add initiator solution 1 to the mixture A, keep warm for 2 minutes, then drop part of the initiator solution 2 and part of the mixture B into the system at the same time, the dropping time ...

Embodiment 2

[0117] This embodiment provides an acrylic emulsion and its application.

[0118] (1) The composition of acrylic emulsion is as follows:

[0119]

[0120] (2) Preparation of acrylic emulsion

[0121] Mix 83% of water, 50% of emulsifier SR-10, and PTF thickener, stir evenly, and heat up to 82°C to 85°C to obtain mixture A;

[0122] Dissolving 50% sodium persulfate with 2% water to obtain initiator solution 1, and set aside; and dissolving 50% sodium persulfate with 5% water to obtain initiator solution 2, set aside;

[0123] Mix 10% of water and the remaining 50% of emulsifier with methyl methacrylate, isooctyl acrylate, acrylic acid, acrylamide and silane coupling agent A-171, fully stir and emulsify to obtain mixture B, set aside;

[0124] Under the condition of 82°C to 85°C, add initiator solution 1 to mixture A, and after keeping it warm for 2 minutes, add part of initiator solution 2 and part of mixture B dropwise to the system at the same time, and the dropping time ...

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Abstract

The invention relates to an acrylic emulsion and application thereof. The acrylic emulsion is prepared from the following raw materials in percentage by mass: 55%-76% of water, 0.1%-5% of an emulsifier, 0.01%-0.5% of an initiator, 12%-20% of a hard monomer, 10%-20% of a soft monomer, 0.5%-5% of a functional monomer, 0.5%-5% of a silane coupling agent and 0.5%-5% of a PTF thickener. The hard monomer, the soft monomer and the functional monomer are selected from acrylate monomers. The acrylic emulsion is low in glossiness and high in transparency, has excellent water resistance and stain resistance, does not need matte powder, and can be directly used for preparing matte finish-coat paint.

Description

technical field [0001] The technical field of coatings of the present invention particularly relates to an acrylic emulsion and its application. Background technique [0002] Varnish is a pigment-free transparent or light yellow paint with good gloss, fast film formation and wide application. The main components are resin and solvent or resin, oil and solvent. After being applied to the surface of the object, a coating film with protection, decoration and special properties is formed. After drying, a smooth film is formed to show the original pattern of the object surface. [0003] The architectural coating finish varnish prepared by the existing emulsion has the following problems. [0004] (1) The gloss of the emulsion used is close to 90° under 60° light irradiation, which is very dazzling and easily affects eyesight. It is necessary to add 4% to 5% (accounting for the percentage of the total mass of the formula) of matte reducing paint in the formula Only when the glos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F220/56C08F230/08C09D133/12C09D5/16
CPCC08F220/14C09D5/1662C09D143/04
Inventor 杜国旗陈潮汉吴银萍
Owner 江门市金桥新材料有限公司
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