Patent · US Active

Siloxane copolymers and methods for production thereof

US8691744B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Michael Messner · Diedorf, DE
Sabine Hoffmann · Radebeul, DE
Jens-Peter Moldenhauer · Burghausen, DE

Key dates

Filing date	Dec 8, 2009
Grant date	Apr 8, 2014
Priority date	—
Expiry date	Jul 2, 2030

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD06M15/647
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Siloxane copolymers producible by (a) reacting organopolysiloxanes (1) having a Si-bound hydrogen atom with linear oligomeric or polymeric compounds (2) of the general formula R1-(A-CnH2n)m-A1-H (I), (b) reacting the resultant H-A1 group-bearing intermediates (4) with organic compounds (5) having at least two isocyanate groups in the presence of further organic compounds (6) and (7) which are reactive toward isocyanate groups, wherein the compounds (6) contain at least one tertiary amine group and the compounds (7) can be eliminated from the siloxane copolymer in a temperature range from 50° C. to 250° C., wherein free isocyanate groups are formed in the siloxane copolymer, and (c) partially or completely quaternizing the amine-containing intermediates (8) from step (b) with an alkylating agent (9).

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