Phosphorus compounds

Details Phosphorus compounds Phosphorus compounds

C - Chemistry, Metallurgy

07

F

C07F 9/12 (2006.01) C07F 9/165 (2006.01) C07F 9/18 (2006.01) C07F 9/6571 (2006.01) C07F 9/6574 (2006.01) C08K 5/523 (2006.01) C08K 5/527 (2006.01) C08K 5/5398 (2006.01)

Patent

CA 2042008

Compounds of general formula I Image wherein X1 is chloro or bromo, X2 is chloro, bromo or hydrogen, and Y is O or S, and R1 and R2 are each independently of the other C1-C4alkyl, and R3 and R4 is a group of formula II Image which carries identical or different substituents and wherein R1, R2, X1 and X2 are as defined above, or R3 and R4, when taken together, form a group of formula III Image wherein R1 and R2 any as defined above, are very suitable flame retardants for polymers.

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