HYDROXYL-CONTAINING POLY(ALKYLENE PHOSPHATES)

摘要

Flame retardant compositions for polyurethanes may include hydroxyl-containing poly(alkylene phosphates) that have 5 mol % or less of phosphorus from phosphorus-containing compounds having a 31P NMR resonance signal at a chemical shift in the range from 13 ppm to 18 ppm relative to 85 wt % phosphoric acid.

主权项

1. A composition comprising at least one hydroxyl-containing poly(alkylene phosphate) of formula (I)where
n is an integer from 1 to 100, R1, R2, R3 and R4 independently of one another represent a C1- to C8-alkyl radical or a radical of formula —(CHR5—CHR6—O)m—H,
where
m is an integer from 1 to 5, andR5 and R6 independently of one another represents hydrogen or methyl,with the proviso that one or more of the radicals but not simultaneously all of the radicals R1, R2, R3 and R4 represent a radical of formula —(CHR5—CHR6—O)m—H, A represents a straight-chain or branched C4- to C20-alkylene radical or a C3- to C6-cycloalkylene radical, or A represents a radical of formula —CH2—CH═CH—CH2—, a radical of formula —CH2—C≡C—CH2—, a radical of formula —CHR5—CHR6—(O—CHR7—CHR8)a—, a radical of formula —CHR5—CHR6—S(O)b—CHR7—CHR8— or a radical of formula —(CHR5—CHR6—O)c—R9—(O—CHR7—CHR8)d—,
where
a is an integer form 0 to 5,b is an integer from 0 to 2,c and d are independently of one another an integer of 1 and 5,R5, R6, R7 and R8 independently of one another represent hydrogen or methyl,R9 represents the radical —CH2—CH═CH—CH2—, the radical —CH2—C≡C—CH2—, a 1,2-phenylene radical, a 1,3-phenylene radical, a 1,4-phenylene radical, or a radical of formula (II)or a radical of formula (III)or a radical of formula (IV)or a radical of formula
—C(═O)—R12—C(═O)—,wherein
R10 and R11 each independently of one another represents hydrogen or C1- to C4-alkyl, or R10 and R11 together with the carbon atom to which they are bonded represent an optionally alkyl-substituted carbocyclic ring having 4 to 8 carbon atoms, and R12 represents a straight-chain or branched C2— to C8-alkylene radical, a C3- to C6-cycloalkylene radical a 1,2-phenylene radical, a 1,3-phenylene radical, or a 1,4-phenylene radical,wherein, in a 31P NMR spectrum of the composition in CDCl3 as solvent, with 85 wt % phosphoric acid as external standard, an area under all resonance signals from 13 to 18 ppm is about 5 per cent or less of the total area of all resonance signals from −30 to 200 ppm.