| 摘要 |
Oligomer mixture comprises at least three poly(alkylene phosphate) polymers (I) which differ from each other at least in number of repeating units. The average number of repeating units of the three polymers (I) is greater than 1.1-less than 2. Oligomer mixture comprises at least three poly(alkylene phosphate) polymers of formula (R1-O-P(=O)(O-R2)-(O-A-O-P(=O)(O-R3)) n-O-R4) (I) which differ from each other at least in number of repeating units. The average number of repeating units of the three polymers (I) is greater than 1.1-less than 2. R1-R4 : 1-8C alkyl or 1-4C alkoxyethyl; A : optionally branched or cyclic 4-20C alkylene, -CH 2-CH=CH-CH 2-, -CH 2-CC-CH 2-, -CHR5-CHR6-(O-CHR7-CHR8) a-, -CHR5-CHR6-S(O) b-CHR7-CHR8- or -(CHR5-CHR6-O) c-R9-(O-CHR7-CHR8) d-; a : 1-5; b : 0-2; c, d : 1-5; R5-R8 : H or CH 3; R9 : -CH 2-CH=CH-CH 2-, -CH 2-CC-CH 2-, 1,2-phenylene, 1,3-phenylene, 1,4-phenylene, 4,4'-methylenebis(4,1-phenylene) moieties of formula (II), 4,4'-methylenebis(cyclohexane-4,1-diyl) moieties of formula (III), 4,4'-sulfonylbis(4,1-phenylene) or -C(=O)-R12-C(=O)-; either R10, R11 : H or 1-4C alkyl; or R10+R11 : 4-8C ring (optionally substituted by alkyl); R12 : optionally branched or cyclic 2-8C alkylene, 1,2-phenylene, 1,3-phenylene or 1,4-phenylene; and n : 0-100. Independent claims are also included for: (1) preparing the oligomer mixture, comprising (a) reacting dihydroxy compounds of formula (HO-A-OH) (IV) with phosphorus oxychloride, where greater than 1-less than 2 moles (IV) is used per mole of phosphorus oxychloride, and (b) reacting the obtained mixture of oligomeric chlorophosphate compounds of formula (Cl-P(=O)(Cl)-(O-A-O-P(=O)(Cl)) n-Cl) (V) with monohydroxy compounds of formula (M-OH) (VI); (2) a flame retardant formulation comprising the above oligomer mixture, at least one flame retardant which is different from the oligomer mixture, and optionally at least one auxiliary; (3) flame retardant polyurethane comprising the above oligomer mixture; and (4) preparing the flame retardant polyurethane, comprising reacting at least one organic polyisocyanate with at least one compound having at least two isocyanate-reactive hydrogen atoms, in presence of the oligomer mixture and optionally in presence of propellants, stabilizers, catalysts, activators, auxiliaries or additives. M : R1-R4. [Image]. |
