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US 9,631,144 B2Granted
Flame retardant composition
AssigneeBromine Compounds Ltd.
InventorsMark Gelmont, Michael Peled, Dina Alon, Ron Frim, Yoav Bar-Yaakov
Life of this patent
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Abstract
A liquid flame retardant composition which comprises one or more flame retarding agents, which are the epoxides obtainable by reacting tetrabromobisphenol A with epichlorohydrin and their end-capped derivatives represented by Formula (1) is provided. The liquid composition is especially useful in the preparation of rigid polyurethane foams.
Claims14
A liquid composition comprising:
- A) One or more solid flame retarding agents represented by Formula 1b:
- wherein n, the degree of polymerization, is an integer in the range from 0 to 5;
- B) one or more liquids selected from the group consisting of polyols and esters of a pentavalent phosphorus acid;
- and
- C) tribromoneopentyl alcohol;
- said polyols comprising a polyol with a number of hydroxyl groups of not less than 3 and a hydroxyl number in a range of 150 to 850 mg KOH/g;
- wherein the liquid composition is a solution in which the one or more solid flame retardants of Formula 1 b and the tribromoneopentyl alcohol are dissolved in the one or more liquids, with the bromine content of the liquid composition being not less than 25% w/w.
4 more elements
Dependencies are inferred from the claim text.