THERMOPLASTIC ADHESIVE COMPOSITION

• Main Authors: LEE, I-Hwa, OLRY, Camille, HAUSMANN, Karlheinz
• Format: Patent
• Language: English; French
• Published: 27.06.2019
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

Provided herein is a thermoplastic adhesive composition comprising an ethylene acid copolymer, an ethylene alkyl acrylate copolymer, and a functionalized ethylene copolymer that may be directly copolymerized or a graft copolymer of a polyolefin base with a graft comonomer. Further provided are multilayer films comprising the thermoplastic adhesive composition and coextrusion processes for producing these films. The multilayer films are useful as packaging materials and in particular as food packaging materials. L'invention concerne une composition adhésive thermoplastique comprenant un copolymère d'acide éthylène, un copolymère d'éthylène-acrylate d'alkyle et un copolymère d'éthylène fonctionnalisé pouvant être directement copolymérisés ou un copolymère greffé d'une base de polyoléfine avec un comonomère greffé. L'invention concerne en outre des films multicouches comprenant la composition adhésive thermoplastique et des procédés de coextrusion pour la production de ces films. Les films multicouches sont utiles en tant que matériaux d'emballage et en particulier en tant que matériaux d'emballage alimentaire.