Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of fully biodegradable pressure-sensitive adhesive and preparation method thereof

An all-biological, pressure-sensitive adhesive technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of products that cannot be biodegraded, poor environmental protection, poor tape performance, etc., to achieve safety and environmental protection in the preparation process , Simple and low cost, the effect of reducing the temperature of hot melt coating

Active Publication Date: 2022-01-25
JIANGSU JINGHONG NEW MATERIAL TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN109722201A discloses a polyester pressure-sensitive adhesive that can be biodegraded and the use method of the pressure-sensitive adhesive, but the tape performance of the pressure-sensitive adhesive is poor; CN107177339A discloses a biodegradable lactide oligomer Adhesive, the adhesive is obtained by polymerization of lactide, through which the pressure-sensitive adhesive has biodegradability, but the solvent is used in the preparation process, and the environmental protection is poor; CN108250368A discloses a biodegradable pressure-sensitive adhesive The adhesive is obtained by free-radical polymerization of polyester copolymers containing unsaturated double bonds and vinyl monomers, but the products of free-radical polymerization of vinyl monomers are not biodegradable

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of fully biodegradable pressure-sensitive adhesive and preparation method thereof
  • A kind of fully biodegradable pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Preparation of fully biodegradable elastomer:

[0036] Add 4kg of terephthalic acid, 4kg of isophthalic acid, 8kg of adipic acid, 14kg of butanediol, and 125g of trimethylolpropane into a reaction kettle with a distillation column, and react at -0.05MPa, 230°C, The by-product water and tetrahydrofuran are discharged into the collection tank through the rectification tower. When the produced water reaches the theoretical value, 20g of tetrabutyl titanate and 10g of triphenyl phosphate are put in, the temperature is raised to 270°C, and the reaction is performed at -0.1MPa first. After 1 hour, switch to high vacuum and continue to react at 100pa. When the stirring power of the motor reaches the set value, the material is discharged to obtain a fully biodegradable elastomer;

[0037] 2. Preparation of lactic acid oligomers:

[0038] The D,L-lactic acid aqueous solution with a mass concentration of 90% is added to the first reaction kettle at a rate of 15kg / h. The first...

Embodiment 2

[0050] Different from Example 1 is the modulation of full biological pressure-sensitive adhesive:

[0051] The above 70 parts of fully biodegradable elastomers, 28 parts of 300-600D, L-lactic acid oligomers, 1 part of 600-2000D, L-lactic acid oligomers, 1 part of glycerol tribenzoate, 0.5 parts of diphosphite Add pentaerythritol diisodecyl ester into the reaction kettle, stir and mix for 15 minutes at 180° C., and then discharge to obtain a finished biodegradable pressure-sensitive adhesive product.

Embodiment 3

[0053] Different from Example 1 is the modulation of full biological pressure-sensitive adhesive:

[0054] The above 70 parts of fully biodegradable elastomer, 1 part of 300-600D, L-lactic acid oligomer, 21 parts of 600-2000D, L-lactic acid oligomer, 8 parts of adipate-propylene glycol-butylene glycol ester, 0.5 Parts of pentaerythritol diisodecyl diphosphite were added to the reaction kettle, stirred and mixed for 15 minutes at 180°C, and then discharged to obtain a finished biodegradable pressure-sensitive adhesive.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
peel strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a fully biodegradable pressure-sensitive adhesive and a preparation method thereof. The pressure-sensitive adhesive is composed of a fully biodegradable elastomer, a 300-600 molecular weight D,L-lactic acid oligomer, and a 600-2000 molecular weight D,L-lactic acid oligomer. It is prepared by mixing lactic acid oligomers, plasticizers and antioxidants. The pressure-sensitive adhesive has the characteristics of simple and pollution-free preparation process, no use of solvent, convenient industrialization and the like. The biodegradable pressure-sensitive adhesive tape prepared by the pressure-sensitive adhesive has the advantages of high initial adhesion, high peeling strength, good holding force, good biodegradability and the like.

Description

technical field [0001] The invention belongs to the technical field of pressure-sensitive adhesive preparation, and in particular relates to a fully biodegradable pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] With the continuous increase of express business volume in my country, the environmental pollution caused by the non-degradable adhesive tape used in express packaging is becoming increasingly serious. At present, the base material of the adhesive tape can be replaced by biodegradable materials: paper, cellulose, polylactic acid, PBAT and other films, but the pressure-sensitive adhesive has not yet been replaced. Therefore, there is an urgent need to develop a fully biodegradable pressure-sensitive adhesive to completely replace the non-degradable adhesive tape with biodegradable pressure-sensitive adhesive tape. [0003] CN109722201A discloses a polyester pressure-sensitive adhesive that can be biodegraded and the use meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/02C09J167/04C09J11/08
CPCC09J167/02C09J11/08C08L2205/03C08L2205/025C08L2201/06C08L67/04
Inventor 吴迪吴培龙陆银秋宋阁刘鑫伟蔡昌旺
Owner JIANGSU JINGHONG NEW MATERIAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com