EP0212827A2
Expired / Lapsed
EP
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Silicone water base fire barriers
Assignee: Dow Silicones Corp
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Filing: 1986-07-10
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Granted: —
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Expires: 2006-07-10
Abstract
Abstract An aqueous silicone emulsion useful in forming a fire barrier consists essentially of a mixture of anionically stabilized silicone emulsion, expanded vermiculite, and fiber selected from the group consisting of ceramic fiber and aramid fiber. The trowelable composition is applied to fill cracks or openings in fire walls to seal the wall and then allowed to dry. The dried material seals the opening it occupies. Upon exposure to fire, the dried material forms a char on its surface which protects the material under the surface and maintains a seal in the wall.
Inventors
- 👤 John Earl Dietlein
- 👤 Jack Russell Harper
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:28
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/14; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/22; C08K7/24; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
A composition, useful as a fire barrier, consisting essentially of a mixture of (A) 100 parts by weight of an anionically stabilized silicone emulsion which is an aqueous, oil-in-water emulsion that cures upon drying at ambient temperature to an elastomeric film, the emulsion having a solids content of greater than 50 percent by weight, (B) greater than 5 parts by weight of an expanded vermiculite, and (C) greater than 0.2 parts by weight of fiber selected from the group consisting of ceramic fiber and aramid fiber, the composition being an emulsion having a viscosity such that it is trowelable and non-slump and capable of producing a cured, continuous fire barrier at a thickness of 10 mm when the water is removed at room temperature.
Claim 2
Dependent Claim
124 words
A composition, useful as a fire barrier, consisting essentially of a mixture of (A) 100 parts by weight of an anionically stabilized silicone emulsion which is an aqueous, oil-in-water emulsion that cures upon drying at ambient temperature to an elastomeric film, the emulsion having a solids content of greater than 50 percent by weight, (B) greater than 5 parts by weight of an expanded vermiculite, and (C) greater than 0.2 parts by weight of fiber selected from the group consisting of ceramic fiber and aramid fiber, the composition being an emulsion having a viscosity such that it is trowelable and non-slump and capable of producing a cured, continuous fire barrier at a thickness of 10 mm when the water is removed at room temperature.
Claim 3
Dependent Claim
38 words
The composition of claim 1 in which the silicone emulsion consists essentially of a dispersed phase of hydroxyl endblocked polydiorganosiloxane and colloidal silica, and a continuous phase of water and optionally particulate filler and optionally organic tin compound.
References Cited (Backward Citations)
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