Organopolysiloxane composition with expanded perlite
AssigneesDow Silicones Corporation, Dow Global Technologies LLC
InventorsChi-Hao Chang, Craig F. Gorin, Bizhong Zhu, Michael Whitbrodt, Xiangyang Tai, Minbiao Hu, Xuesi Yao
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Abstract
The present invention relates to a composition comprising reactive polysiloxanes and hydroxyl-containing precursors, a fire retardant, and expanded perlite. The composition is useful in the preparation of an insulating, compressible, and flame-resistant foamed material that is useful for providing heat insulation, flame resistance, and compressibility for applications such as lithium-ion batteries.
Claims5
A composition comprising, based on the weight of the composition, a) from 2 to 50 weight percent of a polysiloxane functionalized with at least two Si—H groups and having a degree of polymerization in the range of from 5 to 1000;
- b) from 1 to 50 weight percent of water, an alcohol, a diol, a polyol, or a compound containing one or more silanol groups;
- c) from 10 to 90 weight percent of a polysiloxane functionalized with at least one ethylenically unsaturated group and having a degree of polymerization in the range of from 20 to 2000;
- wherein the total concentration of components a, b, and c is in the range of from 35 to 95 weight percent, based on the weight of the composition;
- d) a catalytic amount of a hydrosilylation catalyst;
- e) from 1 to 30 weight percent of a fire retardant;
- and f) from 1 to 15 weight percent of expanded perlite.
Dependencies are inferred from the claim text.