Patent · US Active

Impact strength improving agent for epoxy resin compositions

US9796809B2 · kind B2 · utility

2Cited by

3References

18Claims

0Family size

Assignee

SIKA TECHNOLOGY AG · CH

Inventors

Karsten Frick · Birmenstorf, CH
Jurgen Finter · Glückstadt, DE
Ulrich Gerber · Schlieren, CH
Yves Meier · Zürich, CH
Jeannette Clifford · Bremgarten, CH

Key dates

Filing date	Nov 21, 2008
Grant date	Oct 24, 2017
Priority date	—
Expiry date	Apr 7, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G59/4253
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a butadiene/acrylonitrile copolymer CTBN, modified by epoxy solid resin and terminated by carboxyl groups, the terminal epoxy groups thereof also having optionally been reacted. A polymer of this type is used in particular as an impact strength improving agent in epoxy resin compositions and has proven to be particularly advantageous for gluing on or of metal surfaces. It results in a significant reduction of the infiltration with corrosion, which in turn ensures a long-lived adhesive bond.

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