Adhesivos termoplásticos universales para películas multicapa

• Main Authors: LEE, I-Hwa, OLRY, Camille, HAUSMANN, Karlheinz
• Format: Patent
• Language: Spanish
• Published: 20.11.2023
• 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

Las realizaciones de la presente divulgación se dirigen a una composición adhesiva termoplástica que comprende: al menos un polímero a base de etileno injertado con anhídrido maleico; al menos un interpolímero de etileno/α-olefina/dieno no conjugado que tiene una distribución de peso molecular (MWD) >= 2,5, en el que MWD = Mw/Mn, en el que Mw es el peso molecular promedio en peso y Mn es el peso molecular promedio en número, ambos determinados mediante cromatografía de permeación en gel; un polietileno de muy baja densidad (VLDPE) que tiene una densidad en el intervalo de 0,885 a 0,915 gramos/cm3; y opcionalmente al menos un copolímero de (met)acrilato de etileno-alquilo, en el que el grupo alquilo comprende de uno a cuatro átomos de carbono. (Traducción automática con Google Translate, sin valor legal) Embodiments of the present disclosure are directed to a thermoplastic adhesive composition comprising: at least one maleic anhydride-grafted ethylene-based polymer; at least one at least one ethylene/α-olefin/non-conjugated diene interpolymer having a molecular weight distribution (MWD) ≥ 2.5, wherein MWD = Mw/Mn, wherein Mw is weight averaged molecular weight and Mn is number averaged molecular weight, which are both determined by gel permeation chromatography; a very low density polyethylene (VLDPE) having a density in the range 0.885 to 0.915 grams/cm3; and optionally at least one ethylene alkyl (meth)acrylate copolymer, wherein the alkyl group comprises one to four carbon atoms.