Prepolymer preparation and polymerization of flame retardant che

Details Prepolymer preparation and polymerization of flame retardant che Prepolymer preparation and polymerization of flame retardant che

1978-10-11

1981-01-20

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Contains fireproofing or biocidal agent

8116P, 106 1815, 106 1818, 252 81, 427341, 4273933, C09D 518

Patent

active

042460310

ABSTRACT:
A flame retardant prepolymer composition for imparting flame retardance to cotton, cellulosic textiles, and certain other materials; the process for preparing the prepolymer composition; and the application technique of said prepolymer composition are disclosed. Tetrakis(hydroxymethyl)phosphonium sulfate, a THP salt, is acidified, ammonia gas is bubbled into the mixture to achieve a constant boiling, these steps are repeated a number of times, and the prepolymer mixture thus prepared is then applied to a substrate, followed by treatment with a caustic solution.

REFERENCES:
patent: 3310420 (1967-03-01), Wagner
patent: 3607356 (1971-09-01), Beninate et al.
patent: 3645936 (1972-02-01), Gardner
patent: 3784356 (1974-01-01), Wagner
patent: 3846155 (1974-11-01), Wagner
Elgal et al., "Prepolymer Preparation and Polymerization of Flame Retardant Chemicals in Cotton", ACS Symposium Series, No. 58, 10/77, pp. 249-260.

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