Patent · US Expired

Soluble organopolysiloxane free-radical macroinitators for graft copolymerization

US5605983A · kind A · utility

7Cited by

8References

7Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Jochen Dauth · Burghausen, DE
Catherine Oleggini · Oyonnax, FR
Bernward Deubzer · Burghausen, DE

Key dates

Filing date	Dec 20, 1994
Grant date	Feb 25, 1997
Priority date	—
Expiry date	Dec 20, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F283/12
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to partially crosslinked organopolysiloxanes which contain a radical forming group, a base-catalyzed process for their preparation, graft copolymers produced from these organopolysiloxanes and a process for the preparation of the graft copolymers. The present invention avoids problems related to known methods wherein a considerable portion of the organopolymer chains do not graft to the organopolysiloxane graft back-bone but remain as an unattached homopolymers.

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