Patent · US Expired

Core/shell particles, and curable epoxy resin compositions comprising same

US6037392A · kind A · utility

19Cited by

11References

10Claims

0Family size

Assignee

Ciba Specialty Chemicals Corporation · US

Inventors

Qian Tang · Sunnyvale, US
Martin Roth · Hölstein, CH
Dean Tallak Behm · Muttenz, CH
Carl W. Mayer · Riehen, CH
Klaus Petschel · Weil am Rhein, DE
Sameer H. Eldin · Birsfelden, CH

Key dates

Filing date	Nov 21, 1996
Grant date	Mar 14, 2000
Priority date	—
Expiry date	Nov 21, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S525/902
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Core/shell particles comprising a core comprising an elastomer having a T.sub.G value of <0.degree. C., onto which a shell of a crosslinked copolymer is grafted, where the proportion of the crosslinking component in the copolymer of the shell is from greater than 5 to 90% by weight, based on the total amount of the comonomers of the shell copolymer, are suitable as toughening agents for epoxy resins, with which they have good compatibility.

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