Patent · US Active

Low temperature cure silicone elastomer

US11203667B2 · kind B2 · utility

0Cited by

20References

20Claims

0Family size

Assignee

Dow Silicones Corporation · US

Inventors

Patrick BEYER · Wiesbaden, DE
Ivonne Hankammer · Wiesbaden, DE
Hans Peter WOLF · Zürich, CH

Key dates

Filing date	Jul 30, 2020
Grant date	Dec 21, 2021
Priority date	—
Expiry date	Jul 30, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L83/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A liquid curable silicone elastomer composition is disclosed. The liquid curable silicone elastomer composition comprises an organopolysiloxane (A) containing at least two silicon-bonded alkenyl groups per molecule, an organopolysiloxane (B) containing at least three silicon-bonded hydrogen atoms per molecule, a platinum based catalyst (C), an inhibitor (D), and a silica filler (E). The organopolysiloxane (B) is a branched (or resinous) polymer, contains M siloxy units, and the at least three silicon-bonded hydrogen atoms are present on the M siloxy units. The inhibitor (D) is selected from the group consisting of acetylenic alcohols and their derivatives. The inhibitor (D) is present in the liquid curable silicone elastomer composition in an amount to provide a molar ratio—of the inhibitor (D) to platinum in the catalyst (C)—of from 150 to 900 (150:1 to 900:1).

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