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Polychloroprene-based contact adhesives containing ethylene-vinyl acetate copolymer

A vinyl acetate copolymer and polychloroprene technology, which is applied in the field of polychloroprene-based contact adhesives including ethylene-vinyl acetate copolymers, and can solve methyl methacrylate pollution and the like problems, to achieve the effect of simplifying production

Pending Publication Date: 2020-11-13
ARLANXEO DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also disadvantages here of contamination with unconverted methyl methacrylate and additional operating steps for the grafting reaction

Method used

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  • Polychloroprene-based contact adhesives containing ethylene-vinyl acetate copolymer
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  • Polychloroprene-based contact adhesives containing ethylene-vinyl acetate copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] The present invention is explained in more detail below with reference to examples:

[0043] Production of samples and implementation of tensile peel test (based on DIN EN 1392:2006):

[0044] The samples used consisted of polyvinyl chloride with a plasticizer fraction of 30% (flexible PVC) and had dimensions of 200 mm x 30 mm x 4 mm. The samples were scraped 3 times with 80-grade sandpaper on one side using a sander (Jet 10-20plus drum sander). The test pieces were then trimmed to a length of 100 mm x 30 mm x 4 mm and degreased by wiping with ethyl methyl ketone soaked paper.

[0045] For bonding by a contact-type bonding method, the adhesive is applied twice to the flexible PVC coupon, leaving 3 cm to the edge free of adhesive. The waiting time between two applications was 10 min. Fifteen minutes after the second application, the pairs of flexible PVC coupons were placed on top of each other so that the adhesive-free areas completely overlapped each other. Immedia...

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Abstract

Disclosed is a contact adhesive composition, comprising polychloroprene and, based on the polychloroprene content, 10 to 99 wt% of ethylene-vinyl acetate copolymer exhibit outstanding adhesion to substrates such as ethylene-vinyl acetate copolymers, thermoplastic elastomers or flexible PVC. The contact adhesive composition is especially suitable for use in the bonding of articles, preferably articles in which at least part of the articles to be bonded consists of polyurethane, flexible PVC, ethylene-vinyl acetate copolymers and / or thermoplastic elastomers. This allows the adhesive compositionto be employed widely in the footwear industry, for the bonding of roofing membranes containing flexible PVC, ethylene-propylene-diene rubber (EPDM) and / or ethylene-vinyl acetate copolymers, or for the bonding of synthetic leather based on flexible PVC.

Description

Background technique [0001] Solvent-based contact adhesives based on polychloroprene are known for their high initial strength, long contact bonding time, good tack and self-adhesion, and resistance to oils, chemicals, water, and ozone. famous. As such, they have established themselves for many years in applications in the footwear, furniture, construction and automotive industries. In particular, the shoe industry relies on contact adhesives, which allow fast and reliable bonding as well as long working times (contact bonding time) and thus high productivity. The demands placed on these adhesives in the footwear industry are constantly increasing. In addition to easy-bonding materials such as synthetic rubber and leather, difficult-to-bond materials such as ethylene-vinyl acetate copolymers, thermoplastic elastomers or flexible polyvinyl chloride (flexible PVC) are increasingly used. Flexible PVC is to be understood as polyvinyl chloride (PVC) having a plasticizer content ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J111/00C09J123/08
CPCC09J111/00C08L11/00C08L23/0853C08K3/22C09J5/00C09J2411/00C09J2427/008C09J2431/00C09J2423/04
Inventor 马丁·霍赫克里斯蒂安·伦特雷吉娜·弗里塞马丁·施奈德
Owner ARLANXEO DEUT GMBH