Patent · US Expired

Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith

US4956485A · kind A · utility

4Cited by

1References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Edgar Leitz · Dormagen, DE
Hans-Josef Buysch · Krefeld, DE
Ludwig Bottenbruch · Krefeld, DE
Karl-Heinz Ott

Key dates

Filing date	Jun 16, 1989
Grant date	Sep 11, 1990
Priority date	—
Expiry date	Jun 16, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F30/08
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Trialkylsilyloxy-1,1-diphenyl ethylenes corresponding to general formula I, new polymers produced therewith terminated by aryl trialkylsilyl ether groups or by phenolic hydroxyl groups and a process for the production of these polymers by anionic polymerization ##STR1## in which R.sup.1, R.sup.2 =H, C.sub.1 -C.sub.4 alkyl, OCH.sub.3, PA1 R.sup.3 =H, C.sub.1 -C.sub.4 alkyl, O--C.sub.1 -C.sub.4 alkyl, PA1 R.sup.4 =H, C.sub.1 -C.sub.4 alkyl, PA1 R.sup.5 =C.sub.1 -C.sub.4 alkyl, PA1 R.sup.6 =H, C.sub.1 -C.sub.4 alkyl.

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