A kind of polyacrylate, pressure-sensitive adhesive and preparation method

A technology of polyacrylate and methacrylic acid, used in the field of pressure-sensitive adhesives, can solve the problems of different molecular weight and distribution, and achieve the effect of low cost, no residual glue, and good high temperature resistance.

Active Publication Date: 2021-04-30
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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  • A kind of polyacrylate, pressure-sensitive adhesive and preparation method
  • A kind of polyacrylate, pressure-sensitive adhesive and preparation method
  • A kind of 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 a polyacrylate, which is synthesized from the following raw materials in mass percentage: 10-30% of hard monomers; 15-40% of soft monomers; 1-5% of functional monomers; 0.5-2% of special monomers; Solvent 40-50%; hard monomer is one or more of methyl acrylate, methyl methacrylate, vinyl acetate, acrylonitrile, isobornyl methacrylate; soft monomer is ethyl acrylate, acrylic acid One or more of n-butyl, isooctyl acrylate, and n-propyl acrylate; the functional monomers are hydroxyethyl acrylate, acrylic acid, methacrylic acid, hydroxypropyl acrylate, and 2-hydroxyethyl methacrylate One or more of them; the special monomer is one or more of methacrylamide ethyl ethylene urea, hydroxyethyl methacrylate phosphate, glycidyl methacrylate. The pressure-sensitive adhesive of the invention has good high-temperature-resistant cohesive force, no glue overflow, no glue residue, and low cost, and can be applied to masking tapes used in capacitor braiding in the electronics industry and some high-temperature-resistant 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 & AuthorityPatents(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
OwnerCYBRID TECHNOLOGIES INC