Thermally expandable sealants

Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond

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52232, 277227, 428268, 428273, 428278, 428290, 428306, 428436, 428442, 428443, 428522, 428524, 428920, 428921, 428323, 428329, 428367, 428408, B65D 5306, B32B 516

Patent

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042775329

ABSTRACT:
A thermally-expandable sealant for joints, cavities or holes, which foams in the event of a fire and thereby effects a seal, comprising as a carrier a fleece or fabric made of glass or plastic, which is coated with a composition based upon expandable graphite and containing, per 100 parts by weight of expandable graphite, 10 to 30 parts by weight of polychlorobutadiene, 1 to 40 parts by weight of an alkylphenol/formaldehyde resin and 1 to 3 parts by weight of stabilizers known per se, and optionally, up to 30 parts by weight of inorganic fibers and up to 80 parts by weight of aluminium hydroxide. A process for sealing joints, cavities or holes using the sealant is also disclosed.

REFERENCES:
patent: 3404061 (1968-10-01), Shane
patent: 3627551 (1971-12-01), Olstowski
patent: 3770480 (1973-11-01), Farnam
patent: 3826074 (1974-07-01), Uffner
patent: 4072531 (1978-02-01), Funabiki
patent: 4108211 (1979-12-01), Olcott
patent: 4173681 (1979-11-01), Durrieu

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