THERMOPLASTIC ADHESIVES OF PRESSURE SENSITIVE POLYURETHANE (PSA) WITH CONTROLLED PEGAJOSITY IN A SHORT TEMPERATURE RANGE (Machine-translation by Google Translate, not legally binding)

The present invention relates to a pressure sensitive polyurethane thermoplastic adhesive with controlled tack as a function of temperature, comprising: - an isocyanate of general formula R (NCO)n, where n is at least 2, - at least one polyol or polyol mixture, wherein the NCO/OH ratio is greater th...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: MARTIN MARTINEZ, JOSE MIGUEL, FUENSANTA SORIANO, MONICA
Format: Patent
Sprache:eng ; spa
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The present invention relates to a pressure sensitive polyurethane thermoplastic adhesive with controlled tack as a function of temperature, comprising: - an isocyanate of general formula R (NCO)n, where n is at least 2, - at least one polyol or polyol mixture, 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 comprised between 400-5000 g/mol, characterized by having optimum tack in the temperature ranges selected from 10 - 39ºC, 5 - 20ºC and -10 - 5ºC. The present invention also relates to the process for the preparation of these adhesives and the use thereof. (Machine-translation by Google Translate, not legally binding) La presente invención se refiere a un adhesivo termoplástico de poliuretano sensible a la presión con pegajosidad controlada en función de la temperatura, que comprende: - un isocianato de fórmula general R(NCO)n, donde n es al menos 2, - al menos un poliol o mezcla de polioles, donde la relación NCO/OH es mayor de 1, la funcionalidad es al menos 2, y el peso molecular del poliol o polioles está comprendido entre 400-5000 g/mol, caracterizado por que tiene pegajosidad óptima en los rangos de temperatura seleccionados de entre 10 - 39°C, 5 - 20°C y -10 - 5°C. La presente invención se refiere además al procedimiento para la preparación de estos adhesivos y al uso de los mismos.