Phosphinic acid flame retardants

Details Phosphinic acid flame retardants Phosphinic acid flame retardants

1991-09-09

1992-05-19

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523451, 524135, 558108, 558179, 558182, C07F 932, C08K 55313

Patent

active

051150050

ABSTRACT:
Compounds of the formula Ia or Ib ##STR1## in which R.sub.1 and R.sub.2, independently of one another, are hydrogen, alkyl, cycloalkyl, alkenyl, aryl or aralkyl or, together with the carbon atoms in the .alpha.-position to the carbonyl groups, form a cyclopentane, cyclopentene, cyclohexane, cyclohexene, cyclohexadiene or bicyclo[2.2.1]hept-5-ene ring which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, or form a monocyclic or polycyclic, aromatic ring system which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, R.sub.3 and R.sub.4, independently of one another, are hydrogen, alkyl, alkenyl, aryl or aralkyl, and R.sub.5 and R.sub.6, independently of one another, are alkyl, aryl or aralkyl groups, are highly suitable as flame retardants for polymers.

REFERENCES:
patent: 4178399 (1979-12-01), Hall et al.

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