Smoke and toxic gas suppressant composition

Details Smoke and toxic gas suppressant composition Smoke and toxic gas suppressant composition

C - Chemistry, Metallurgy

08

L

403/43, 400/5503

C08L 75/04 (2006.01) C08G 18/40 (2006.01) C08G 18/42 (2006.01) C08J 9/00 (2006.01)

Patent

CA 1328944

Smoke and Toxic Gas Suppressant Composition Abstract of Disclosure The present invention provides a composition comprising a combustible material containing urethane linkages; and as a smoke and toxic gas suppressant, a polyester which has an acid value below 30 mg KOH/g, preferably below 10 mg KOH/g, and which is derived from: Ia.[A] a component which contains 4 carboxyl groups or anhydride thereof, and which is preferably an aromatic component, or Ib. a mixture of [A] and [s]: [B] one or more components which contain 2 to 12, preferably 2 to 4, carboxyl groups or 1 to 6, preferably 1 or 2, carboxylic anhydride groups, selected from: [B1] an aliphatic carboxylic acid component containing 2-16 carbon atoms; [B2] a cyclic non-aromatic carboxylic acid containing 7-16 carbon atoms; and [B3] an aromatic carboxylic acid containing 8-16 carbon atoms; and II.[C] at least one aliphatic, cycloaliphatic or aromatic polyhydroxyl component containing 2 to 8 hydroxyl groups, and the amount of polyester is from to 50 100 % based on the weight of polyol used to make the com- bustible material.

588738

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