Medical polyacrylate pressure-sensitive adhesive with high adhesion performance

A pressure-sensitive adhesive, polyacrylate technology, applied in the direction of adhesive type, ester copolymer adhesive, etc., to achieve the effect of good balance, wide molecular weight distribution and high molecular weight

Active Publication Date: 2016-01-06
四川厚生天佐药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing medical polyacrylate pressure-sensitive adhesives cannot fully meet the demand in some applications requiring high adhesive performance, and there is a need to improve its adhesive performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Prepare each component, wherein in parts by weight, the soft monomer is 30 parts of ethyl acrylate, 15 parts of butyl acrylate, 10 parts of acrylate-2-ethylhexyl, the T of the soft monomer g -60°C, the hard monomer is 5 parts of methyl methacrylate, 5 parts of methyl acrylate, the functional monomer is 3 parts of methacrylic acid, 2 parts of hydroxyethyl acrylate, and the initiator is 0.03 parts of diphenyl peroxide The mixture of formyl and 0.02 parts of dicumyl peroxide, 2 parts of crosslinking agent, it is prepared by reacting polydiphenylmethane diisocyanate and polyether polyol, the content of isocyanate group is 5.5wt%, the solvent is A mixture of 30 parts of ethyl acetate, 20 parts of toluene, and 5 parts of butanone.

[0031] (2) Slowly heat up the soft monomer to about 82°C, then fully stir the hard monomer, functional monomer, initiator accounting for 20% of the total initiator, and solvent accounting for 10% of the total solvent The mixture was slowly dr...

Embodiment 2

[0035] (1) Prepare each component, wherein in parts by weight, the soft monomer is 30 parts of ethyl acrylate, 15 parts of isooctyl acrylate, 10 parts of 2-ethylhexyl acrylate, the T of the soft monomer g -62°C, the hard monomer is 5 parts of methyl methacrylate, 5 parts of styrene, the functional monomer is 3 parts of methacrylic acid, 2 parts of hydroxyethyl acrylate, and the initiator is 0.03 parts of diphenyl peroxide A mixture of acyl and 0.02 parts of azobisisobutyronitrile, 2 parts of crosslinking agent, which is prepared by reacting polydiphenylmethane diisocyanate with polyether polyol, the content of isocyanate group is 5.5wt%, and the solvent is 30 Parts of ethyl acetate, 20 parts of toluene, 5 parts of butanone.

[0036](2) Slowly heat up the soft monomer to about 83°C, then fully stir the hard monomer, functional monomer, initiator accounting for 25% of the total initiator, and solvent accounting for 15% of the total solvent The mixture was slowly dropped into th...

Embodiment 3

[0040] (1) Prepare each component, wherein in parts by weight, the soft monomer is 30 parts of butyl acrylate, 15 parts of isooctyl acrylate, 10 parts of 2-ethylhexyl acrylate, the T of the soft monomer g -65°C, the hard monomer is 5 parts of methyl methacrylate, 5 parts of methyl acrylate, the functional monomer is 3 parts of methacrylic acid, 2 parts of hydroxyethyl acrylate, and the initiator is 0.02 parts of diphenyl peroxide The mixture of formyl and 0.03 parts of dicumyl peroxide, 2 parts of crosslinking agent, it is prepared by reacting polydiphenylmethane diisocyanate and polyether polyol, the content of isocyanate group is 5.5wt%, the solvent is A mixture of 30 parts of ethyl acetate, 20 parts of toluene, and 5 parts of butanone.

[0041] (2) Slowly heat up the soft monomer to about 82°C, then fully stir the hard monomer, functional monomer, initiator accounting for 20% of the total initiator, and solvent accounting for 15% of the total solvent The mixture was slowly...

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PUM

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Abstract

The invention relates to a medical polyacrylate pressure-sensitive adhesive with high adhesion performance. The medical polyacrylate pressure-sensitive adhesive comprises soft monomers, hard monomers, functional monomers, initiators, cross-linking agents and solvents. The glass-transition temperature of the soft monomers ranges from -65 DEG C to -60 DEG C. The cross-linking agents are isocyanate-group-containing compounds generated through the reaction between polyisocyanates and polyhydroxy compounds. The weight-average molecular weight of the pressure-sensitive adhesive ranges from 80*10<4> g/mol to 140*10<4> g/mol. The molecular weight distribution of the pressure-sensitive adhesive ranges from 10 to 25. In the preparing process of the pressure-sensitive adhesive, temperature and the reaction sequence and the adding quantity of the reaction materials are gradually controlled, and the product with the high molecular weight and the wide molecular weight distribution is obtained. The product can be used for the medical and health field.

Description

technical field [0001] The invention relates to a medical pressure-sensitive adhesive, which belongs to the field of polymer materials. Background technique [0002] Pressure-sensitive adhesive is a kind of adhesive that can be bonded to the adherend under the light pressure of external force. With its unique performance and characteristics, it has become the product with the largest amount of use and the widest application range among adhesives. Its products are almost found in various fields such as packaging, automobiles, transportation, communications, electrical appliances, building materials, machinery, aviation, light industry, and hygiene. . Among them, polyacrylate pressure-sensitive adhesives are relatively cheap because of their simple formula, wide bonding range, good weather resistance, strong light resistance, excellent oil resistance, good water resistance, no phase separation and migration, and convenient operation. For reasons such as pressure-sensitive ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C08F220/18C08F220/14C08F220/06C08F220/28C08F212/08
Inventor 任建华
Owner 四川厚生天佐药业有限公司
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