초록 ▼

Phosphorus-containing condensation products are obtained by effecting condensation between an organophosphorus compound of the Formula, [Figure] wherein X, Y and Z each is hydrogen or halogen, R1 and R2 each is hydrogen or methyl and R3 is hydrogen or an alkyl group and polyhydric alcohols having at

Phosphorus-containing condensation products are obtained by effecting condensation between an organophosphorus compound of the Formula, [Figure] wherein X, Y and Z each is hydrogen or halogen, R1 and R2 each is hydrogen or methyl and R3 is hydrogen or an alkyl group and polyhydric alcohols having at least three alcoholic hydroxyl groups. These condensation products are ueful as a flame retardant for various synthetic resins.

대표청구항 ▼

A flame retardant comprising phosphorus-containing condensation products of an organophosphorus compound represented by Formula I, [Figure] I wherein X, Y and Z each is hydrogen or halogen, R1 and R2 each is hydrogen or methyl and R3 is hydrogen or an alkyl group with a polyhydric alcohol having at

A flame retardant comprising phosphorus-containing condensation products of an organophosphorus compound represented by Formula I, [Figure] I wherein X, Y and Z each is hydrogen or halogen, R1 and R2 each is hydrogen or methyl and R3 is hydrogen or an alkyl group with a polyhydric alcohol having at least three alcoholic hydroxyl groups selected from the class consisting of glycerine, polyglycerines, trimethylol ethane, trimethylol propane, pentaerythritol, dipentaerythritol, tripentaerythritol, tetrapentaerythritol, mannite and sorbite, where said condensation products have a phosphorus content of 6.0 to 10.7% by weight and a softening point of 55°-155°C. A flame retardant resin composition comprising 100 parts by weight of a thermoplastic resin and 3 to 50 parts by weight of phosphorus-containing condensation products of an organophosphorus compound represented by Formula I, [Figure] I wherein X, Y and Z each is hydrogen or halogen, R1 and R2 each is hydrogen or methyl and R3 is hydrogen or an alkyl group with a polyhydric alcohol having at least three alcoholic hydroxyl groups, where said condensation products have a phosphorus content of 6.0 to 10.7% by weight and a softening point of 55°-155°C.