ADHESIVOS TERMOPLASTICOS DE POLIURETANO SENSIBLES A LA PRESION (PSA) CON PEGAJOSIDAD CONTROLADA EN UN CORTO RANGO DE TEMPERATURAS

The invention relates to a thermoplastic adhesive made of polyurethane which is sensitive to pressure and with a tackiness that is controlled depending on the temperature, comprising: an isocyanate of general formula R(NCO)n, where n is at least 2; at least one polyol or a mixture of polyols, wherei...

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Bibliographische Detailangaben
Hauptverfasser:	MARTIN MARTINEZ, JOSE MIGUEL, FUENSANTA SORIANO, MONICA
Format:	Patent
Sprache:	spa
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DYES HUMAN NECESSITIES HYGIENE MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL 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 MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	The invention relates to a thermoplastic adhesive made of polyurethane which is sensitive to pressure and with a tackiness that is controlled depending on the temperature, comprising: an isocyanate of general formula R(NCO)n, where n is at least 2; at least one polyol or a mixture of polyols, wherein the NCO/OH ratio is greater than 1, the functionality is at least 2 and the molecular weight of the polyol or polyols is between 400-5000 g/mol; characterised in that the adhesive has an optimum tackiness in the temperature ranges selected between 10-39ºC, 5-20ºC and -10-5ºC. The invention also relates to the method for preparing said adhesives and the use thereof.