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US 2002/0171068 A1Published application
Aqueous intumescent fire barrier composition
Assignee3M Innovative Properties Company
InventorsDavid Walter Erismann, George F. Vesley
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Abstract
An aqueous fire barrier composition including a latex that includes a polymer, a polyol having 2, 3 or 4 hydroxy groups and a molecular weight of from about 75 to about 1200, and an intumescent agent.
Claims51
An aqueous fire barrier composition comprising:
- latex comprising a polymer;
- a polyol having 2, 3 or 4 hydroxy groups and a molecular weight of from about 75 to about 1,200;
- and
- an intumescent agent.
1 more element
An aqueous fire barrier composition comprising:
- latex comprising a polymer;
- a polyol having 2, 3 or 4 hydroxy groups;
- and
- an intumescent agent comprising a composition comprising
- granular alkali metal silicate represented by the formula M2O:XSiO2 in which M is an alkali metal,
- at least one oxyboron compound selected from the group consisting of boric acid and borate salts of Group I and group II elements, and
- water bound to said alkali metal silicate,
- the weight ratio X ranging from about 1.5 to about 4,
- the molar ratio of boron to M being from about 0.2 to about 0.9,
- and the water being about 5% to about 15% of the total granule weight.
7 more elements
An aqueous fire-barrier composition comprising:
- latex comprising acrylate-vinylacetate-ethylene terpolymer;
- a polyol having 2, 3 or 4 hydroxy groups;
- and
- an intumescent agent.
1 more element
An aqueous fire barrier composition comprising:
- a) 40% by weight to 45% by weight latex comprising acrylate-vinylacetate-ethylene terpolymer;
- b) 1% by weight to 3% by weight polyethylene glycol having a molecular weight from about 100 to about 500;
- c) 15% by weight to 25% by weight intumescent agent comprising a composition comprising
- granular alkali metal silicate represented by the formula M2O:XSiO2 in which M is an alkali metal,
- at least one oxyboron compound selected from the group consisting of boric acid and borate salts of Group I and group II elements, and
- water bound to said alkali metal silicate,
- the weight ratio X ranging from about 1.5 to about 4,
- the molar ratio of boron to M being from about 0.2 to about 0.9,
- and the water being about 5% to about 15% of the total granule weight;
- and
- d) 18% by weight to 27% by weight zinc borate.
8 more elements
Dependencies are inferred from the claim text.