Patent · US Active

Reactive adhesives based on block copolymers

US11384194B2 · kind B2 · utility

0Cited by

6References

18Claims

0Family size

Assignee

Evonik Operations GmbH · DE

Inventors

Nicolai Kolb · Recklinghausen, DE
Gabriele Brenner · Schneverdingen, DE
Bernhard Schleimer · Marl, DE

Key dates

Filing date	Oct 31, 2018
Grant date	Jul 12, 2022
Priority date	—
Expiry date	Jun 14, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2170/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a composition comprising the reaction product of a block copolymer based on OH-functional polyolefin which is unhydrogenated, preferably polybutadiene, and cyclic esters in the form of a polyol having at least 1.8, preferably at least two, OH groups and at least one isocyanate compound having at least two isocyanate groups, which is notable in that the composition includes at least 0.0001% to 40% by weight of titanium and has a content of free isocyanate groups of at least 0.1% by weight based on the overall composition, to a process for preparation thereof and to the use of the composition for bonding of substrates.

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