New substituted bis(tetrakis(hydroxymethyl)phosphonium) salts are useful for the production of flame retardant polyurethane foams

    公开(公告)号:DE10304344A1

    公开(公告)日:2004-08-12

    申请号:DE10304344

    申请日:2003-02-03

    Applicant: BASF AG

    Abstract: Substituted bis[tetrakis(hydroxymethyl)phosphonium] salts are new. Substituted bis[tetrakis(hydroxymethyl)phosphonium] salts (I) of formula (1) are new. [Image] A : -CH2 or CH2-CH-E; E : 1-8(1-4)C alkylene; R : an organic group which in polyurethane comprises the corresponding isocyanate or its reaction products or in a prepolymer is the group of the added isocyanate; w, x, y, z : 1-20. Independent claims are included for: (1) a process for the production of salts (I) by reaction of tetrakis(hydroxymethyl)phosphonium salts of formula (10) with alkylene oxides; (2) polyurethanes, preferably rigid polyurethane foams having at least one structure of formula (2) - (9) in its matrix; (3) an isocyanate or hydroxyl group containing prepolymer containing at least one structure of formula (2) - (9) and; (4) a process for the production of flame retardant polyurethanes by reaction of polyisocyanates with isocyanate-reactive compounds having at least 2 reactive hydrogen atoms in the presence of a compound of formula (1) or (10). [Image] [Image] D : -CH2 or -CH2-CH-E; B : anion; a : whole number ensuring electroneutrality.

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