Patent · US Expired

Use of isocyanates in the preparation of highly viscous self-adhesive compositions

US6822048B1 · kind B1 · utility

9Cited by

16References

11Claims

0Family size

Assignee

tesa AG · DE

Inventors

Axel Burmeister · Hamburg, DE
Sven Hansen · Hamburg, DE
Heiko Leydecker · Neustadt, DE
Christian Kreft · Hamburg, DE
Jochen Stähr · Hannover, DE

Key dates

Filing date	Aug 11, 2000
Grant date	Nov 23, 2004
Priority date	—
Expiry date	May 25, 2021

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2896
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Hot-melt pressure-sensitive adhesive based one or more non-thermoplastic elastomers, at least comprising 100 parts by mass of the non-thermoplastic elastomer(s), from 1 to 200 parts by mass of one or more tackifying resins, and also one or more polyfunctional isocyanates which are free from blocking agent, the hot-melt pressure-sensitive adhesive comprising from 8 mmol to 5 mol of the reactive isocyanate groups of the isocyanate per kilogram of the non-thermoplastic elastomer(s) used.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.