Diazaphospholanes and diazaphosphorinanes

Details Diazaphospholanes and diazaphosphorinanes Diazaphospholanes and diazaphosphorinanes

1980-09-18

1982-03-30

Ford, John M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 24, C07D21158

Patent

active

043225314

ABSTRACT:
The invention relates to diazaphospholanes and diazaphosphorinanes of the formula I ##STR1## in which m is 0 or 1, n is 1 or 2 and R.sup.1 to R.sup.4 are as defined in claim 1. These compounds are effective light stabilizers for organic materials, especially for polymers. In addition, they can also possess an antioxidant and/or a flame retardant action. They can be obtained from the corresponding diamines by a cyclization reaction with the phosphorus dichlorides R.sup.3 P(O).sub.m Cl.sub.2.

REFERENCES:
patent: 3684765 (1972-08-01), Matsui et al.
patent: 3904581 (1975-09-01), Murayama et al.
patent: 3970636 (1976-07-01), Hardy et al.

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