Masa adhesiva biodegradable sensible a la presión

• Main Authors: VON WEDEL-PARLOW, Tobias, STREBL-PFARR, Maike
• Format: Patent
• Language: Spanish
• Published: 23.03.2023
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES

El objetivo es proporcionar un adhesivo sensible a la presión biodegradable que pueda recubrirse indirectamente sin problemas sobre soportes biodegradables. La invención se refiere a un PSA biodegradable que contiene al menos un 60% en peso de al menos un poliuretano y al menos un éster de ácido carboxílico sulfonado. Otro objeto de la invención es un método para producir una cinta adhesiva biodegradable, que - proporciona un adhesivo sensible a la presión según la invención como una dispersión en al menos un disolvente orgánico; - Recubrir esta dispersión sobre un revestimiento antiadherente; - la eliminación del disolvente orgánico; y - la transferencia del PSA a un soporte biodegradable. (Traducción automática con Google Translate, sin valor legal) A biodegradable pressure-sensitive adhesive is to be made available, which can easily be coated indirectly on biodegradable carriers. The invention relates to a biodegradable pressure-sensitive adhesive which contains at least 60 wt .-% of at least one polyurethane and at least one sulfonated carboxylic acid ester. Another object of the invention is a method for producing a biodegradable adhesive tape, which - providing a pressure-sensitive adhesive according to the invention as a dispersion in at least one organic solvent; - coating this dispersion on a release liner; the removal of the organic solvent; and - transferring the pressure-sensitive adhesive to a biodegradable carrier.