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Medical hot melt adhesive and preparation method thereof

A technology of hot melt adhesive and butyl rubber, which is applied in the direction of adhesives, adhesive types, mineral oil hydrocarbon copolymer adhesives, etc., can solve the problems of insufficient flexibility and cohesiveness, and achieve good bonding effect, Meet medical requirements, good flexibility effect

Active Publication Date: 2015-12-09
力森诺科材料(无锡)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly two types of pressure-sensitive hot-melt adhesives, one is synthetic rubber-type pressure-sensitive adhesives, and the other is SBS-type hot-melt adhesives. Although these two pressure-sensitive adhesives have their own advantages, they are used in medical materials due to It is used at low temperature, and the flexibility and adhesion are not enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Medical hot melt adhesive, its raw materials are composed according to the following parts by weight: 10 parts of butyl rubber, 0.7 parts of maleic anhydride graft compatibilizer, 23 parts of SEBS, 15 parts of EVA, 10 parts of hydrogenated petroleum resin, 3 parts of terpene resin, PE 7 parts of wax, 12 parts of naphthenic oil, 1 part of polyisobutylene, 1 part of rubber antioxidant, 0.2 part of antioxidant, 0.7 part of montmorillonite powder.

Embodiment 2

[0025] Medical hot melt adhesive, its raw materials are composed according to the following parts by weight: 12 parts of butyl rubber, 0.6 parts of maleic anhydride graft compatibilizer, 22 parts of SEBS, 13 parts of EVA, 9 parts of hydrogenated petroleum resin, 2 parts of terpene resin, PE 5 parts of wax, 13 parts of naphthenic oil, 1.5 parts of polyisobutylene, 2 parts of rubber antioxidant, 0.3 part of antioxidant, 0.6 part of montmorillonite powder.

Embodiment 3

[0027] Medical hot melt adhesive, its raw materials are composed according to the following parts by weight: 13 parts of butyl rubber, 0.8 parts of maleic anhydride graft compatibilizer, 20 parts of SEBS, 12 parts of EVA, 11 parts of hydrogenated petroleum resin, 2.5 parts of terpene resin, PE 6 parts of wax, 12 parts of naphthenic oil, 3 parts of polyisobutylene, 3 parts of rubber antioxidant, 0.4 part of antioxidant, 0.5 part of montmorillonite powder.

[0028] The preparation method of above each embodiment is:

[0029] (1) Mix butyl rubber, maleic anhydride graft compatibilizer and SEBS and banbury at 120-130°C for 3-4 minutes;

[0030] (2) Add polyisobutylene and rubber anti-aging agent, mix, banbury at 130-140°C for 10 minutes, cool, and crush the rubber block;

[0031] (3) In the reaction kettle, add naphthenic oil and PE wax, heat to 200°C, add the crushed rubber block, stir until the rubber block dissolves, then add EVA, hydrogenated petroleum resin, terpene resin, a...

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PUM

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Abstract

The invention relates to a hot melt adhesive, and particularly relates to a medical hot melt adhesive and a preparation method thereof. The medical hot melt adhesive comprises the following raw materials: butyl rubber, a maleic anhydride grafted compatilizer, styrene-ethylene / butene-styrene (SEBS) copolymer, ethylene-vinyl acetate (EVA) copolymer, hydrogenated petroleum resin, terpene resin, polyethylene (PE) wax, naphthenic oil, polyisobutene, a rubber antiager, an antioxidant and montmorillonite powder. The preparation method of the medical hot melt adhesive comprises the following steps: banburying of a rubber block, and mixing reaction of the rubber block and resin. The hot melt adhesive provided by the invention has a bonding effect better than the conventional pressure-sensitive adhesive in low-temperature use, has good flexibility, and meets the medical requirements.

Description

technical field [0001] The invention relates to a hot melt adhesive, in particular to a medical hot melt adhesive and a preparation method thereof. Background technique [0002] Medical hot-melt adhesives are usually pressure-sensitive adhesives, which refer to a type of adhesive that is sensitive to pressure and can be bonded to the adherend with a little finger pressure without the use of solvents or other auxiliary means. At present, there are mainly two types of pressure-sensitive hot-melt adhesives, one is synthetic rubber-type pressure-sensitive adhesives, and the other is SBS-type hot-melt adhesives. Although these two pressure-sensitive adhesives have their own advantages, they are used in medical materials due to It is used at low temperature, and the flexibility and adhesion are not enough. Contents of the invention [0003] In view of the above technical problems, the purpose of this invention is to provide a medical hot melt adhesive and its preparation method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J153/02C09J123/08C09J123/22C09J157/02C09J11/08C09J11/04
Inventor 赖建成陈建安罗学平
Owner 力森诺科材料(无锡)有限公司
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