Patent · US Expired

Pasty compositions for crosslinking organopolysiloxanes to silicone rubber

US4174338A · kind A · utility

9Cited by

3References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Heinz Goller · Linz, AT
Hans-Hermann Schulz · Leichlingen, DE
Bernhard Leusner · Leverkusen, DE

Key dates

Filing date	Sep 26, 1977
Grant date	Nov 13, 1979
Priority date	—
Expiry date	Sep 26, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/54
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A pasty composition for the room temperature crosslinking and curing of a vulcanizable organopolysiloxane, comprising a crosslinking agent for an organopolysiloxane, a curing catalyst therefor, and about 3-40% by weight of the total amount of the pasty composition of active hydrophilic silica as a thickener. The pasty composition may additionally contain up to about 40% by weight of at least one inactive filler. Advantageously, the organopolysiloxane is in one tube and the pasty composition is in another; lengths of material are squeezed out in easily ascertained proportions and are mixed in the presence of water, e.g. water vapor in the atmosphere, the mixture setting to a silicone rubber.

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