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High-hydroxyl acrylic emulsion with quick drying and long working life and synthesis method thereof

A technology of high-hydroxy acrylic acid and methyl methacrylate, applied in the field of polymer chemistry, can solve the problem that high-hydroxy acrylic emulsion cannot have both fast drying and long pot life

Active Publication Date: 2020-10-23
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem that the existing high-hydroxy acrylic emulsion cannot have both quick-drying and long pot life. Provide its synthesis method

Method used

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  • High-hydroxyl acrylic emulsion with quick drying and long working life and synthesis method thereof
  • High-hydroxyl acrylic emulsion with quick drying and long working life and synthesis method thereof
  • High-hydroxyl acrylic emulsion with quick drying and long working life and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0049] Example 1 Synthesis of Neopentyl Glycol Monoester of Hydroxypivalate Monoacrylate

[0050] The synthetic method of hydroxypivalic acid neopentyl glycol monoester monoacrylate of the present embodiment comprises the following steps: 2g acrylic acid and 25g hydroxypivalic acid neopentyl glycol monoester are dropped into the reactor, then drop into 0.3g p-toluenesulfonate Acid and 0.1g hydroquinone, start stirring, heat up to 80°C, vacuum degree 0.06-0.04MPa, homogeneous esterification reaction, azeotropic distillation, the generated water is received by the condenser, water separator and water phase The organic phase is returned to the top of the rectification tower to obtain a crude reaction solution, which is added to the phase separation tank, and a mixed liquid of xylene and water is added (the mass ratio of xylene to water is 5:1) Extraction is carried out, and the aqueous phase and the organic phase are obtained by the extraction, and the aqueous phase is passed i...

Embodiment 2

[0054] The raw materials and consumption of the high hydroxyl acrylic emulsion of this embodiment are shown in Table 1.

[0055] Table 1

[0056] raw material Dosage (g) Methyl methacrylate 40 Styrene 10 acrylic acid 1 n-butyl acrylate 10 Neopentyl glycol monohydroxypivalate monoacrylate 38 Ammonium persulfate 0.5 OP-10 1 pH adjuster ammonia water to pH7 Deionized water 150

[0057] The synthetic method of present embodiment high hydroxyl acrylic acid emulsion comprises the following steps:

[0058] ① Mix 0.8g of emulsifier OP-10, 80g of deionized water and selected quality methyl methacrylate, styrene, acrylic acid, n-butyl acrylate, hydroxypivalic acid neopentyl glycol monoacrylate Add it to the pre-emulsification tank, and at room temperature, continue to stir at a stirring rate of 500rpm for 15 minutes to carry out pre-emulsification to obtain a pre-emulsion;

[0059] ②Add 0.2g of emulsifier OP-10 and ...

Embodiment 3

[0065] The raw materials and consumption of the high hydroxyl acrylic emulsion of this embodiment are shown in Table 2.

[0066] Table 2

[0067] raw material Dosage (g) Methyl methacrylate 23 Styrene 20 acrylic acid 1 n-butyl acrylate 15 Neopentyl glycol monohydroxypivalate monoacrylate 37 potassium persulfate 0.5 Sodium dodecyl sulfate 1 pH adjuster ammonia water to pH7 Deionized water 150

[0068] The synthetic method of present embodiment high hydroxyl acrylic acid emulsion comprises the following steps:

[0069] ① Mix 0.8g of emulsifier sodium lauryl sulfate, 80g of deionized water and selected quality methyl methacrylate, styrene, acrylic acid, n-butyl acrylate, neopentyl glycol monohydroxy pivalate An acrylate was added to the pre-emulsification tank, and at room temperature, the stirring rate was 500 rpm for 15 minutes to carry out pre-emulsification to obtain a pre-emulsion;

[0070] ②Add 0.2g of ...

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Abstract

The invention belongs to the field of polymer chemistry, and particularly relates to a high-hydroxyl acrylic emulsion with quick drying and long working life and a synthesis method thereof. The high-hydroxyl acrylic emulsion is prepared by polymerizing the following raw materials: 10 to 50 parts by mass of methyl methacrylate, 5 to 30 parts by mass of styrene, 0.5 to 5 parts by mass of acrylic acid, 2 to 20 parts by mass of n-butyl acrylate and 10 to 50 parts by mass of 7-hydroxyalkyl (meth)acrylate. The high-hydroxyl acrylic emulsion prepared by the method has very excellent appearance, particle size and stability, and water-based two-component coating prepared from the high-hydroxyl acrylic emulsion has relatively high gloss, relatively long working life while being high in drying speed,and extremely excellent in water resistance.

Description

technical field [0001] The invention belongs to the field of polymer chemistry, and in particular relates to a high-hydroxy acrylic emulsion with fast drying and long pot life and a synthesis method thereof. Background technique [0002] Hydroxy acrylic emulsion refers to a type of water-based polyacrylate resin containing hydroxyl groups in the molecular chain, which is mainly used in water-based two-component polyurethane coating systems. The hydroxyacrylic emulsion and the curing agent containing isocyanate groups are cross-linked and cured at room temperature to form a cross-linked coating film with a three-dimensional network structure. Since the hydroxyacrylic emulsion has the characteristics of adjustable polymer structure and designability of the emulsion particles, the waterborne hydroxyacrylic emulsion prepared by emulsion polymerization has a higher molecular weight and a higher glass transition temperature, and it can be formed before the chemical crosslinking re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/67C07C67/08C08F220/14C08F212/08C08F220/06C08F220/18C08F220/20C09D133/12C09D125/14
CPCC07C69/67C08F220/14C08F212/08C09D133/14C09D125/14C08F220/06C08F220/1804C08F220/20
Inventor 鲁剑飞孙立冬尚永华范伟敬杨振敏
Owner WANHUA CHEM GRP CO LTD
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