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Polyacrylate, pressure-sensitive adhesive and preparation method

A technology of polyacrylate and methyl methacrylate, applied in the field of pressure-sensitive adhesives, can solve the problems of different molecular weights and their distributions, and achieve the effects of low cost, simplified polymerization process, and good high temperature resistance.

Active Publication Date: 2019-05-17
CYBRID TECHNOLOGIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In the preparation of this patent, the boiling point of the solvent is used to control the temperature, and the different temperature control methods will cause the molecular weight and its distribution to be different.

Method used

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  • Polyacrylate, pressure-sensitive adhesive and preparation method
  • Polyacrylate, pressure-sensitive adhesive and preparation method
  • Polyacrylate, pressure-sensitive adhesive and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Weighing initiator 1.753g, ethyl acetate 18g mixed to obtain initiator solution.

[0053] Weigh 100g of methyl acrylate, 200g of isooctyl acrylate, 15.06g of acrylic acid, 0.5g of hydroxyethyl acrylate, 300g of ethyl acetate, 30g of vinyl acetate, and 5g of glycidyl methacrylate into the reactor, mix well and pass nitrogen gas Protect for about 30 minutes. After the temperature in the reactor rises to 65-68°C and stabilizes, add 40% initiator solution. When the temperature rises, the reaction starts timing. The reaction temperature is maintained at 65-68°C for 120 minutes, and then the second Add 40% initiator solution for the first time, continue to insulate for 60 minutes, add remaining initiator solution for the third time and insulate for 180 minutes; add 40g ethyl acetate to dilute and discharge when the insulation finishes.

Embodiment 2

[0055] Weighing initiator 1.753g, ethyl acetate 18g mixed to obtain initiator solution.

[0056]Weigh 90g of methyl acrylate, 240g of isooctyl acrylate, 15.06g of acrylic acid, 0.5g of hydroxyethyl acrylate, 300g of ethyl acetate, 30g of vinyl acetate, and 5g of glycidyl methacrylate into the reactor, mix well and pass nitrogen gas Protect for about 30 minutes. After the temperature in the reactor rises to 65-68°C and stabilizes, add 40% initiator solution. When the temperature rises, the reaction starts timing. The reaction temperature is maintained at 65-68°C for 120 minutes, and then the second Add 40% initiator solution for the first time, continue to insulate for 60 minutes, add remaining initiator solution for the third time and insulate for 180 minutes; add 50g ethyl acetate to dilute and discharge when the insulation finishes.

Embodiment 3

[0058] Weighing initiator 1.753g, ethyl acetate 18g mixed to obtain initiator solution.

[0059] Weigh 80g of methyl acrylate, 190g of isooctyl acrylate, 15.06g of acrylic acid, 2g of hydroxyethyl acrylate, 300g of ethyl acetate, 30g of vinyl acetate, 5g of hydroxyethyl methacrylate phosphate into the reactor, mix well and pass into Nitrogen protection for about 30 minutes, when the temperature in the reactor rises to 65-68°C and stabilizes, add 35% initiator solution, when the temperature rises, the reaction starts timing, the reaction temperature is maintained at 65-68°C for 120 minutes, and then Add 40% initiator solution for the second time, continue to insulate for 60 minutes, add remaining initiator solution for the third time and insulate for 180 minutes; add 50g ethyl acetate to dilute and discharge when the insulation finishes.

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Abstract

The invention relates to polyacrylate. Polyacrylate is synthesized from raw materials in percentage by mass as follows: 10%-30% of a hard monomer, 15%-40% of a soft monomer, 1%-5% of a functional monomer, 0.5%-2% of a special monomer and 40%-50% of a solvent, wherein the hard monomer comprises one or more of methyl acrylate, methyl methacrylate, vinyl acetate, acrylonitrile and isobornyl methacrylate; the soft monomer comprises one or more of ethyl acrylate, n-butyl acrylate, 2-ethylhexyl acrylate and n-propyl acrylate; the functional monomer comprises one or more of hydroxyethyl acrylate, acrylic acid, methacrylic acid, hydroxypropyl acrylate and 2-hydroxyethyl methacrylate; the special monomer comprises one or more of methacrylamido ethyl ethylene urea, hydroxyethyl methacrylate phosphate and glycidyl methacrylate. A pressure-sensitive adhesive has good high-temperature-resistant adhesive property, does no squeeze out, has no residue, has low cost and can be applied to masking tapesused in capacitor taping in the electronics industry as well as certain high-temperature-resistant adhesive tapes.

Description

technical field [0001] The invention belongs to the technical field of pressure-sensitive adhesives, and in particular relates to polyacrylate, pressure-sensitive adhesives and a preparation method. Background technique [0002] At present, human work and life are inseparable from electronic products such as notebooks, automobile products, household appliances, etc.; these products have a trend of miniaturization, light weight, thinning and high production efficiency. This trend requires internal zero Components such as capacitors require tapes with high bonding strength and high temperature resistance during the manufacturing process so that they can firmly bond electronics. [0003] In the current technology, adhesives for high temperature resistant tapes mainly include silica gel, rubber, and acrylic ester. Although silicone adhesives have good high temperature resistance, the bonding strength is not high; rubber adhesives have lower temperature resistance than silica ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/20C08F218/08C08F220/32C09J7/38C09J133/08
Inventor 吴喜来周琪权陈洪野吴小平
Owner CYBRID TECHNOLOGIES INC
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