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US 9,309,377 B2Granted
Flame retardants, processes for their preparation and uses thereof in polyurethane and polyisocyanurate foams
AssigneeBromine Compounds Ltd.
InventorsMark Gelmont, Michael Yuzefovich, Dorit Peled, Orly Cohen, Ron Frim
Life of this patent
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Abstract
The invention provides pentabromobenzyl moiety containing hydroxy-functional compounds which are useful as flame-retardants in flexible and rigid polyurethane foams and also in rigid polyisocyanurate foams. Processes for preparing the compounds, polyurethane and polyisocyanurate foams containing the compounds are also provided by the invention.
Claims20
A compound of Formula 1:
- wherein each of n1 and n2 is an integer equal to or greater than 1, with the sum (n1+n2) being equal to or greater than 3, and Z is a moiety derived from a branched polyol containing n chains, with n=n1+n2, wherein each chain comprises not less than 3 repeating units, wherein the repeating unit is an alkylene oxide unit or [CO—(C2-C5)alkylene-O] unit.
Dependencies are inferred from the claim text.