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US 5,830,319 AGranted
Flexible fire barrier felt
AssigneeMinnesota Mining and Manufacturing Company
InventorHeather V. Landin
Life of this patent
Estimating the term…
Abstract
A flexible fire barrier felt is provided that includes an organic polymeric binder; a phosphorus-containing compound; organic fibers with pendant hydroxyl groups; and a heat absorbing compound.
Claims16
A flexible fire barrier felt comprising:
- (a) at least 10 wt-% of an organic polymeric binder;
- (b) at least about 5 wt-% of organic fibers having pendant hydroxyl groups;
- and
- (c) at least about 10 wt-% of a heat absorbing compound;
- wherein the felt contains at least about 0.3 wt-% phosphorus, as provided by a phosphorus-containing compound;
- and wherein all weight percents are based on the total dry weight of the felt.
3 more elements
A flexible fire barrier felt comprising:
- (a) at least 10% to about 50 wt-% of an organic polymeric binder;
- (b) about 5-75 wt-% of cellulosic fibers;
- and
- (c) about 10-70 wt-% of a heat absorbing compound;
- wherein the felt contains about 0.3-3 wt-% phosphorus, as provided by a phosphorus-containing compound;
- and wherein all weight percents are based on the total dry weight of the felt.
3 more elements
Dependencies are inferred from the claim text.