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US 8,865,783 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 having 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.
Claims19
A liquid composition which comprises:
- A) one or more solid flame retarding agents represented by Formula (1):
- wherein n, the degree of polymerization, is an integer in the range of 0 to 5 and R1 and R2 are independently selected from the group consisting of the following monovalent radicals:
- B) one or more liquids selected from the group consisting of polyols and esters of phosphoric acid, and
- C) tribromoneopentyl alcohol,
- said polyols comprise a polyol with a number of hydroxyl groups not less than 3 and a hydroxyl number in a range of 150 to 850 mg KOH/g,
- weight concentration of A) the one or more solid flame retarding agents represented by Formula (1) in the composition is between 10 and 60% w/w, (B) the one or more liquids in the composition is between 10 and 70% w/w and (C) the tribromoneopentyl alcohol is between 20 and 40% w/w, and
- the liquid composition is a solution in which (A) the one or more flame retarding agents of Formula (1) and (C) the tribromoneopentyl alcohol are dissolved in (B) the one or more liquids.
4 more elements
Dependencies are inferred from the claim text.