Patent · US Active

Structural polyurethane adhesive

US9914862B2 · kind B2 · utility

3Cited by

1References

22Claims

0Family size

Assignee

SIKA TECHNOLOGY AG · CH

Inventors

Steffen Kelch · Schlieren, CH
Wolfgang Roock · Appen, DE
Florian Ittrich · Pinneberg, DE

Key dates

Filing date	May 14, 2014
Grant date	Mar 13, 2018
Priority date	—
Expiry date	Jul 18, 2034

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09J2475/003
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to a two-component polyurethane adhesive consisting of a polyol component and a polyisocyanate component, wherein the polyol component comprises a triol with a molar mass of 1,000 to 10,000 g/mol, a diol having two primary hydroxy groups and a molar mass of 60 to 150 g/mol, a poly(trimethylene oxide) diol or a poly(tetramethylene oxide) diol with a molar mass of 200 to 3,000 g/mol and an aliphatic polyamine. The adhesive is characterized by high early strength, a low temperature dependence of the mechanical properties, good adhesion and the possibility of controlled thermally induced release of adhesion.

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