Patent · US Expired

Microbiocidal organopolysiloxane molding compositions

US4228065A · kind A · utility

1Cited by

5References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hermann Genth
Wilfried Paulus · Krefeld, DE
Paul Schiller
Hans Sattlegger · Odenthal, DE
Karl Schnurrbusch · Leverkusen, DE

Key dates

Filing date	Aug 4, 1978
Grant date	Oct 14, 1980
Priority date	—
Expiry date	Aug 4, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S528/901
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

An organopolysiloxane composition having a microbiocidal action comprising an .alpha.,.omega.-dihydroxypolydiorganosiloxane and a benzimidazolyl-alkyl-carbamate of the formula ##STR1## wherein R.sup.1 is an alkyl radical with 1 to 4 carbon atoms, optionally substituted by the radical --OR.sup.3, PA1 R.sup.3 is an alkyl radical with 1 to 4 carbon atoms or the phenyl radical, and PA1 R.sup.2 is hydrogen, an alkyl radical with 1 to 4 carbon atoms, haolgen or nitro. Advantageously the carbamate is methylbenzimidazolylmethyl-carbamate, N-(fluorodichloromethylthio)-phthalimide, is present as a synergistic fungicide and the composition further comprises a silicon-containing crosslinking agent for the siloxane, a heavy metal salt or amino accellerant for crosslinking and an .alpha.,.omega.-bis-(trimethylsiloxy)-polydimethylsiloxane. Water per se or in atmospheric air cures the composition to a rubber elastic product resistant to microbes.

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