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Acrylic emulsion and preparation method therefor

A technology of acrylic emulsion and anionic emulsifier, applied in the direction of adhesive types, film/sheet adhesives, adhesives, etc., can solve the problems that adhesives cannot be well attached and degummed.

Inactive Publication Date: 2017-09-15
TAICHANG RESIN FOSHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Acrylic emulsion has low price and environment-friendly characteristics, and is widely used as an adhesive. Currently, adhesive tapes with adhesives on the market are made of biaxially oriented polypropylene film (BOPP) or polyethylene terephthalic acid. Ethylene glycol resin (PET) film, however, because the above-mentioned substrate also contains polyvinyl chloride (PVC) film with a high dose of plasticizer, the PVC film will release plasticizers, such as phthalates, etc., resulting in sticking The agent cannot be well attached to the PVC film, which will lead to degumming

Method used

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  • Acrylic emulsion and preparation method therefor

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[0033] The present invention also proposes a kind of preparation method of acrylic acid emulsion, comprises the following steps:

[0034] Provide solvents, soft monomers, some hard monomers, functional monomers, molecular weight regulators, anionic emulsifiers and reactive emulsifiers for pre-emulsification in preset proportions to form pre-emulsions;

[0035] Provide non-ionic emulsifier and buffer, mix with part of pre-emulsion and part of initiator, and heat at 75℃~80℃;

[0036] Provide another part of pre-emulsion and another part of initiator, and maintain the temperature at 83-85°C;

[0037] Provide another part of the hard monomer;

[0038] Provides oxidizing and reducing agents.

[0039] The present invention pre-emulsifies according to a preset ratio through solvents, soft monomers, part of hard monomers, functional monomers, molecular weight regulators, anionic emulsifiers and reactive emulsifiers, first provides non-ionic emulsifiers and buffers, and Mix with a p...

Embodiment 1

[0045] By weight, provide 19.3 parts of deionized water, 35.5 parts of isooctyl acrylate, 4.5 parts of methyl methacrylate, 1.1 parts of styrene, 2.3 parts of hydroxyethyl acrylate, 3 parts of acrylic acid, and 0.9 parts of vinyltriethoxysilane part, 0.06 part of dodecyl mercaptan, 0.2 part of nonylphenol ethoxylate ammonium sulfate, and α-sulfur-ω-[1-[(4-nonylphenoxy)methyl]-2-( 0.13 parts of 2-propenyl-1-oxy)ethoxy]-poly(oxy-1,2-ethylenediyl)ammonium salt, put into the pre-emulsification tank for emulsification, and after all the raw materials are evenly dispersed, stop stirring to form pre-emulsion;

[0046] Provide 30 parts of deionized water, 0.2 part of polyoxyethylene lauryl ether, and 0.1 part of sodium bicarbonate, drop into a four-necked flask equipped with agitator, thermometer, condenser and burette, drop into 0.1 part of ammonium persulfate and 2.2 parts of pre-emulsion solution, heated to 77°C;

[0047] Titrate the remaining pre-emulsion and 0.1 part of ammoniu...

Embodiment 2

[0053] By weight, provide 19.3 parts of deionized water, 35.5 parts of isooctyl acrylate, 4.5 parts of methyl methacrylate, 1.1 parts of styrene, 2.3 parts of hydroxyethyl acrylate, 3 parts of acrylic acid, and 0.9 parts of vinyltriethoxysilane Parts, 0.04 parts of dodecyl mercaptan, 0.2 parts of nonylphenol polyoxyethylene ether ammonium sulfate and α-sulfur-ω-[1-[(4-nonylphenoxy)methyl]-2-(2 -propenyl-1-oxy)ethoxy]-poly(oxy-1,2-ethylenediyl)ammonium salt 0.13 parts, put into the pre-emulsification tank for emulsification, after all the raw materials are evenly dispersed, stop stirring to form a pre-emulsification tank Emulsion;

[0054] Provide 30 parts of deionized water, 0.2 part of polyoxyethylene lauryl ether and 0.1 part of sodium bicarbonate and drop into a four-necked flask equipped with agitator, thermometer, condenser and burette, drop into 0.1 part of ammonium persulfate and pre- 2.2 parts of emulsion, heated to 77°C;

[0055] Titrate the remaining pre-emulsion a...

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Abstract

The invention discloses an acrylic emulsion and a preparation method therefor. The acrylic emulsion is prepared from the ingredients in parts by weight: 45-90 parts of flexible monomer, 1-40 parts of hard monomer, 1-10 parts of functional monomer, 0-1 part of molecular weight regulator, 30-55 parts of solvent, 0.1-3 parts of initiator, 0.1-2 parts of buffering agent, 0.1-1 part of reducer, 0.1-1 part of oxidant, 0.1-10 parts of anion emulsifier, 0.1-5 parts of nonionic emulsifier and 0.1-5 parts of reaction type emulsifier. The acrylic emulsion disclosed by the invention has high holding power with a polyvinyl chloride film, and adhesive failure can be prevented.

Description

technical field [0001] The invention relates to the technical field of acrylic emulsion, in particular to an acrylic emulsion and a preparation method thereof. Background technique [0002] Acrylic emulsion has low price and environment-friendly characteristics, and is widely used as an adhesive. Currently, adhesive tapes with adhesives on the market are made of biaxially oriented polypropylene film (BOPP) or polyethylene terephthalic acid. Ethylene glycol resin (PET) film, however, because the above-mentioned substrate also contains polyvinyl chloride (PVC) film with a high dose of plasticizer, the PVC film will release plasticizers, such as phthalates, etc., resulting in stickiness The agent cannot be well attached to the PVC film, resulting in degumming. Contents of the invention [0003] The main purpose of the present invention is to provide an acrylic emulsion, which aims at enhancing the holding force with polyvinyl chloride film and preventing degumming. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F212/08C08F220/28C08F220/06C08F230/08C08F2/30C08F2/26C08F4/40C09J133/08C09J7/02
CPCC08F2/26C08F2/30C08F4/40C08F220/18C08F220/1808C09J133/08C08F220/14C08F212/08C08F220/281C08F220/06C08F230/08
Inventor 许韶庭
Owner TAICHANG RESIN FOSHAN
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