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Environment-friendly type polyester hot-melt pressure-sensitive adhesive, and preparation method thereof

A technology of hot-melt pressure-sensitive adhesive and pressure-sensitive tape, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc. Strength, improved adhesive properties, simple and efficient preparation method

Active Publication Date: 2019-07-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN101899276A uses SIS type thermoplastic elastomer, C5 resin, acrylate resin, mineral oil and polyethylene glycol to melt and blend to prepare hot-melt pressure-sensitive adhesives. Viscous, and synthetic pressure-sensitive adhesives are difficult to degrade and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Mix 95 parts of polyester polyol A, 10 parts of polyester polyol B, 20 parts of diphenylmethane diisocyanate and 0.1 part of p-toluenesulfonic acid, and then react for 4 hours at a vacuum degree of 0.1 MPa and a melting temperature of 160 ° C, that is A polyester hot melt pressure sensitive adhesive is obtained. The polyester hot-melt pressure-sensitive adhesive was uniformly coated on the BOPET film at 120° C. by a hot-melt coater, wherein the thickness of the pressure-sensitive adhesive coating was 25 microns.

[0034] The preparation method of polyester polyol A is: add 1,3-propanediol 9.13g, 1,4-butanediol 10.81g, succinic acid 9.45g, sebacic acid 16.18g, fumaric acid 4.64g in the flask, 0.05g of p-toluenesulfonic acid and 0.05g of hydroquinone, wherein the molar ratio of dibasic acid to dibasic alcohol is 1:1.2, and the molar content of fumaric acid in dibasic acid is 20%; then heat up to 150°C for 3 hours , and then continue the reaction at 170° C. and a vacuum o...

Embodiment 2

[0037] Mix 95 parts of polyester polyol A, 5 parts of polyester polyol B, 20 parts of diphenylmethane diisocyanate and 0.1 part of p-toluenesulfonic acid, and then react for 4 hours at a vacuum degree of 0.1 MPa and a melting temperature of 160 ° C to obtain poly Ester hot melt pressure sensitive adhesive. The polyester hot-melt pressure-sensitive adhesive was uniformly coated on the BOPET film at 120° C. by a hot-melt coater, wherein the thickness of the pressure-sensitive adhesive coating was 25 microns.

[0038] The preparation method of polyester polyol A is identical with embodiment 1.

[0039] The preparation method of polyester polyol B is identical with embodiment 1.

Embodiment 3

[0041] Mix 95 parts of polyester polyol A, 2.5 parts of polyester polyol B, 20 parts of diphenylmethane diisocyanate and 0.1 part of p-toluenesulfonic acid, and then react for 4 hours at a vacuum degree of 0.1 MPa and a melting temperature of 160°C to obtain Polyester hot melt pressure sensitive adhesive. The polyester hot-melt pressure-sensitive adhesive was uniformly coated on the BOPET film at 120° C. by a hot-melt coater, wherein the thickness of the pressure-sensitive adhesive coating was 25 microns.

[0042] The preparation method of polyester polyol A is identical with embodiment 1.

[0043] The preparation method of polyester polyol B is identical with embodiment 1.

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PUM

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Abstract

The invention discloses an environment-friendly type polyester hot-melt pressure-sensitive adhesive, and a preparation method thereof, and belongs to the field of hot-melt pressure-sensitive adhesive.The environment-friendly type polyester hot-melt pressure-sensitive adhesive comprises, by weight, 90 to 100 parts of polyester polyol A, 0.01 to 10 parts of polyester polyol B, 0.01 to 30 parts of isocyanate, 0 to 5 parts of an accelerator, and 0.01 to 1 part of a catalyst. The polyester hot-melt pressure-sensitive adhesive of the invention can be prepared from bio-based monomers, is excellent in adhesive properties, possesses biodegradability, is an environment-friendly pressure sensitive adhesive, and can be widely used in the fields of adhesive tape, sticky notes, electronic packaging, and plaster.

Description

technical field [0001] The invention belongs to the field of hot-melt pressure-sensitive adhesives, and in particular relates to an environment-friendly polyester hot-melt pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive is a special adhesive, which can achieve bonding effect only by hand pressure when used, and is widely used in the fields of tapes, packaging, electronic appliances, and medicine. Compared with solvent-type pressure-sensitive adhesives and emulsion-type pressure-sensitive adhesives, hot-melt pressure-sensitive adhesives have the advantages of no solvent, no pollution, no pollution, and environmental friendliness, and are more conducive to environmental protection and safe production. Therefore, countries around the world are vigorously developing Hot melt pressure sensitive adhesive. The main materials of the current hot-melt pressure-sensitive adhesives are thermoplastic elastomers such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/08C09J7/35C08G18/42
CPCC08G18/4202C08G18/4238C09J7/35C09J11/08C09J175/06C09J2203/326C09J2203/334C09J2301/122C09J2301/304C09J2301/408C08L67/00
Inventor 马丕明于清清王倩倩杨伟军东为富
Owner JIANGNAN UNIV
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