Reaction product of a phosphorous acid with ethyleneamines,...

Details Reaction product of a phosphorous acid with ethyleneamines,... Reaction product of a phosphorous acid with ethyleneamines,...

2006-11-21

2006-11-21

Szekely, Peter (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C252S606000, C524S138000, C524S148000

Reexamination Certificate

active

07138443

ABSTRACT:
Flame retardants, and compositions containing the flame retardants are disclosed. The flame retardants are prepared reacting ethylene diamine with polyphosphoric acid; or reacting an ethyleneamine or a mixture of ethyleneamines with phosphoric acid, polyphosphoric acid, pyrophosphoric acid, or a mixtures thereof. A 10% by weight solution of the product in water has a pH between about 3.5 to 6.5. The flame retardants are non-halogen containing flame retardants that do not gas undesirably during processing at temperatures of 235° C. or even higher.

REFERENCES:
patent: 4369064 (1983-01-01), von Bonin
patent: 6730381 (2004-05-01), Horacek
patent: WO 01/77217 (2001-10-01), None

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