Degradable adhesive for polylactic acid cigarette tows and preparation method thereof

A technology of adhesives and polylactic acid, which is applied in the direction of polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve the problems of long drying time, non-degradable, poor adhesive strength, etc., and achieve faster drying speed , good bonding performance, and the effect of improving volatility

Active Publication Date: 2010-08-18
马鞍山同杰良生物材料有限公司
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention combines the various characteristics of polylactic acid cigarette tow and the shortcomings of existing adhesives for polylactic acid tow, ov

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 21.85g of hydroxyl-terminated lactic acid oligomers (number average molecular weight: 2000) and 1.6g of 2,2-dimethylolpropionic acid into a three-necked flask, mix and stir after melting, vacuumize at 90°C for 1h, and vacuum The degree is 0.1MPa. Then the temperature was lowered to 70°C and 1.9g of 1-methyl-2-pyrrolidone, 4.77g of toluene diisocyanate and 0.1g of catalyst (dibutyltin dilaurate) were sequentially added, heated in a water bath for 2 hours to obtain a prepolymer, and the temperature began to drop. Cool the prepolymer to 50°C and dilute it with ethyl lactate (3g). After the viscosity decreases, add 1.2g of triethylamine to neutralize it for 30 minutes to form a salt. After the phase transition is basically completed. Add 103g of water for emulsification under high-speed stirring, then slowly add chain extender 0.65g of ethylenediamine dropwise, and further chain extension and emulsification reaction for about 30 minutes to obtain a white emulsion (polyu...

Embodiment 2

[0038] Under the operating conditions of Example 1, 4.77 g of toluene diisocyanate was replaced with 4.60 g of 1,6-hexamethylene diisocyanate to obtain a white emulsion (polyurethane solid content 25%).

Embodiment 3

[0040] Under the operating conditions of Example 1, the hydroxyl-terminated lactic acid oligomer was replaced with polyadipate-1,4-butylene glycol ester diol, and 80 g of water was added to obtain a white emulsion (polyurethane solid content 30%).

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

No PUM Login to view more

Abstract

The invention provide degradable adhesive for polylactic acid cigarette tows, wherein the water-based polyurethane adhesive can be prepared through three stages, namely prepolymerization, neutralization and salt formation, and dispersion and chain-extension, and can be biologically degraded. The adhesive preparation method comprises the following steps: (1) prepolymerization, in which, 60 to 75 percent of hydroxyl monomer, 2 to 10 percent of hydrophilic monomer and 15 to 25 percent of isocyanate monomer react through gradual polymerization, 1 to 5 percent of solvent is added into the mixture according to the viscosity of a reaction system so as to generate polyurethane prepolymer; (2) 2 to 7 percent of neutralizer is added into the polyurethane prepolymer for neutralization and salt formation, and water which is 1 to 6 times of the solvent is added into the mixture for dispersion of the prepolymer; and (3) 1 to 6 percent of a chain extender is added into the mixture to form the waterborne polyurethane adhesive. The synthesized adhesive is applicable to the adhering of polylactic acid cigarette tows, and can produce the polylactic acid filter tip bar with biological degradation, environmental protection, non toxicity and excellent adhering performance.

Description

technical field [0001] The invention relates to a biodegradable adhesive for cigarette shreds and a preparation method thereof, in particular to a polylactic acid shredded cigarette. Background technique [0002] Existing cigarette filter material on the market is mainly cellulose acetate and polypropylene. Cellulose acetate filter material has a history of more than 30 years. It has excellent filtration and adsorption properties. The filter rod is mainly formed by triacetin plasticizer. Triacetin has a melting and lapping effect on cellulose acetate. The raw material of polypropylene filter material is petroleum, and the manufacturing cost is low. However, since polypropylene is a non-polar material, special adhesives are required for the bonding and molding of fibers. For example, Chinese Patent No. 200410023332.8 proposes a polypropylene tow forming Adhesive, whose main components are styrene-butadiene-styrene block, styrene-isoprene-styrene, petroleum resin, terpene res...

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
IPC IPC(8): C09J175/04C09J175/06A24D3/08
Inventor 王秦峰任杰许克强程焱吕效东郁晓付敏
Owner 马鞍山同杰良生物材料有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap