US 2026/0217990 A1 · POLYDIMETHYLSILOXANE WITH HIGH LOADING OF MICA

Abstract

The present invention relates to a composition comprising a) a polyorganosiloxane functionalized with at least two Si—H groups; b) a polyorganosiloxane functionalized with at least two vinyl groups; c) micron-sized mica particles; and d) a hydrosilylation catalyst; wherein the concentration of the mica particles is in the range of from 90 to 200 parts by weight per 100 parts by weight of polyorganosiloxanes a) and b). The composition of the present invention is useful as coating material that can be applied to a battery pack casing or cover to protect against the consequences of thermal runaway.

Claims10

Dependent claims

A composition comprising a) a polyorganosiloxane functionalized with at least two Si—H groups and having a degree of polymerization in the range of from 2 to 400;

b) a polyorganosiloxane functionalized with at least two vinyl groups and having a degree of polymerization up to 1000;
c) micron-sized mica particles;
and d) a hydrosilylation catalyst;
wherein the concentration of the mica particles is in the range of from 90 to 200 parts by weight per 100 parts by weight of polyorganosiloxanes a) and b);
and wherein the mole:
mole ratio of Si—H groups in polyorganosiloxane a) to Si-vinyl groups in polyorganosiloxane b) is in the range of from 0.8:1 to 5:1.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

19/145,093Filed 11 Jan 2024

Priority

25 Jan 2023

Published

30 Jul 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

C08L 83/04
Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with…
C09D 5/18
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced ; Filling pastes:…
C08G 77/12
Polysiloxanes: containing silicon bound to hydrogen
C08G 77/20
Polysiloxanes: containing silicon bound to unsaturated aliphatic groups

Polydimethylsiloxane with high loading of mica

Life of this patent

Polydimethylsiloxane with high loading of mica

Life of this patent

Abstract

Claims10