A kind of preparation method of high solid content and strong alkali resistance acrylate emulsion adhesive

A technology with acrylate and high solid content, which is applied in the field of emulsion adhesive preparation to achieve good alkali resistance

Active Publication Date: 2018-05-15
XIAN TIANYI ADHESIVE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a kind of preparation method of high solid content and strong alkali-resistant acrylate emulsion adhesive, which solves the problems of alkali resistance, heat resistance, Defects such as printability can improve the alkali resistance of traditional acrylates to 30-60 minutes, and at the same time have good moldability and good brightness

Method used

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  • A kind of preparation method of high solid content and strong alkali resistance acrylate emulsion adhesive
  • A kind of preparation method of high solid content and strong alkali resistance acrylate emulsion adhesive
  • A kind of preparation method of high solid content and strong alkali resistance acrylate emulsion adhesive

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Effect test

Embodiment 1

[0029] Add 230 parts of water, 1.0 parts of reactive emulsifier sodium acrylamide isopropyl sulfonate and 8.5 parts of anionic emulsifier sodium dodecylbenzene sulfonate to the In a 500ml four-necked flask with a thermometer, the temperature was raised to 70°C, and 3% oil phase was added dropwise into the four-necked flask within 20 minutes. The oil phase included 70 parts of styrene St, 25 parts of methyl methacrylate MMA, 60 parts Butyl acrylate BA, 5 parts of methacrylate MAA, 5 parts of methoxyethyl methacrylate and 0.05 part of stearyl methacrylate; then add 1 part of ammonium persulfate, and finally the remaining 97% of the oil phase Add it dropwise into a four-necked flask within 6 hours, keep warm for 1 hour, and discharge the material to obtain a functionalized acrylate emulsion with a particle size of 78.52nm, a solid content of 43%, and an alkali resistance time of 22 minutes.

Embodiment 2

[0031] Add 240 parts of water, 1.5 parts of reactive emulsifier sodium acrylamide isopropyl sulfonate and 9.5 parts of anionic emulsifier sodium dodecylbenzenesulfonate to the In a 500ml four-necked flask with a thermometer, the temperature was raised to 80°C, and 3% of the oil phase was added dropwise to the four-necked flask within 20 minutes. The oil phase included 75 parts of styrene St, 30 parts of methyl methacrylate MMA, 65 parts Parts of butyl acrylate BA, 6 parts of methacrylate MAA, 5 parts of acetoacetoxyethyl methacrylate and 0.05 part of stearyl methacrylate; then add 1.8 parts of potassium persulfate, and finally the remaining 97% The oil phase was added dropwise into the four-neck flask within 6 hours, and discharged after 1 hour of heat preservation. A functionalized acrylate emulsion with a particle size of 79.00nm, a solid content of 45.32%, and an alkali-resistant time of 28 minutes can be obtained.

Embodiment 3

[0033]Add 270 parts of water, 1.5 parts of reactive emulsifier 2-acrylamido-2-methylpropane sulfonate and 8.5 parts of anionic emulsifier sodium dodecylbenzene sulfonate directly to the In a 500ml four-necked flask with a stirrer, a condenser and a thermometer, heat up to 80°C, add 3% of the oil phase to the four-necked flask dropwise within 20 minutes. The oil phase includes 73 parts of styrene St, 30 parts of methyl methacrylate ester MMA, 62 parts of butyl acrylate BA, 5.8 parts of methacrylate MAA, 5 parts of acetoacetoxyethyl methacrylate and 0.01 part of trimethylolpropane trimethacrylate; then add 1.0 parts of sodium persulfate , and finally the remaining 97% of the oil phase was dropped into the four-necked flask within 6 hours, and the material was discharged after 1 hour of insulation. A functionalized acrylate emulsion with a particle size of 80.00nm, a solid content of 42%, and an alkali resistance time of 25 minutes can be obtained.

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Abstract

A method for preparing a high solid content and strong alkali-resistant acrylate emulsion adhesive, using a reactive emulsifier and anionic emulsifier as a composite emulsifier, and preparing a strong alkali-resistant adhesive by emulsion polymerization at 60-90°C The functionalized copolymer emulsion of styrene, methyl methacrylate, butyl acrylate and methacrylic acid with high solid content, taking the alkali resistance and particle size distribution of the copolymer emulsion as the main indicators, determined the optimum The best preparation process: the reactive emulsifier sodium acrylamide isopropylsulfonate and the anionic emulsifier sodium dodecylbenzenesulfonate are used as the composite emulsification system, the functional monomer methoxyethyl methacrylate and formaldehyde The common addition method of octadecyl acrylate has good polymerization stability. After 7-8 hours of reaction, a copolymer emulsion with a solid content of 40-48%, a particle size of 70nm-90nm and a uniform particle size distribution can be obtained. The method is simple and durable. Alkaline, with good moldability and good brightness.

Description

technical field [0001] The invention belongs to the technical field of preparation of emulsion adhesives, in particular to a method for preparing an emulsion of high solid content and strong alkali-resistant acrylate adhesive. Background technique [0002] Pure styrene-acrylic copolymer emulsion adhesive is a kind of polymer with multiple uses, excellent performance, low price and environmental friendliness, so it is widely used in material packaging, fabric finishing, pressure-sensitive adhesives, adhesives and paper manufacturing, etc. , but at the same time there are also defects such as poor alkali resistance, heat resistance and stain resistance, especially in some special fields, the adhesive should be resistant to 80 ° C, 5% NaOH solution corrosion for a long time, that is, alkali resistance The requirements are relatively high; at the same time, it is also necessary to meet the requirements of environmental protection, thus affecting its wider application. This pate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F220/06C08F220/18C08F220/16C08F220/26C08F2/24C08F2/26
Inventor 王伊尹常杰
Owner XIAN TIANYI ADHESIVE MATERIAL CO LTD
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