Stable polymer compositions containing perfluoroalkyl groups and

Details Stable polymer compositions containing perfluoroalkyl groups and Stable polymer compositions containing perfluoroalkyl groups and

1976-03-03

1978-07-11

Hamrock, William F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260875, 260876R, 260879, 260880R, 260885, C08F25506, C08F27902, C08F26106, C08F26506

Patent

active

041002253

ABSTRACT:
A polymer composition comprising a blend of: (a) a graft copolymer of a perfluorinated unsaturated compound, which only reluctantly homopolymerizes, on a backbone polymer, (b) a copolymer of said perfluorinated unsaturated compound with an ethylenically unsaturated comonomer, and (c) oligomers of said perfluorinated unsaturated compound. The polymer composition is made by dissolving a compound of the formula (R.sub.f --A).sub.n --PG wherein n is an integer of 2 or 3, R.sub.f is a perfluoroalkyl group of at least 3 carbon atoms, A is a linking group, and PG is a polymerizable group derived from fumaric and related acids, together with a backbone polymer, a comonomer which copolymerizes with the perfluorinated compound, and a free radical initiator in an organic solvent and polymerizing at 40.degree. C to 120.degree. C for .5 to 24 hours.
The resulting stable polymer compositions are useful in imparting soil repellent properties to various substrates, especially textiles.
In a preferred embodiment, bis(1,1,2,2-tetrahydroperfluoroalkyl) fumarate, ethylene-propylene-1,5-hexadiene terpolymer and 4-hydroxybutylvinylether are polymerized in tetrachloroethylene in the presence of benzoyl peroxide.

REFERENCES:
patent: 3068187 (1962-12-01), Bolstad et al.
patent: 3252932 (1966-05-01), Bolstad et al.
patent: 3594353 (1971-07-01), Domba
patent: 3876729 (1975-04-01), Mueller

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