Crystallizable vinylidene chloride polymer powders and acrylic f

Details Crystallizable vinylidene chloride polymer powders and acrylic f Crystallizable vinylidene chloride polymer powders and acrylic f

1978-09-15

1980-01-29

Hamrock, William F.

Static structures (e.g., buildings)

260 296RB, 260 308DS, 260 326N, 260DIG24, 525 86, C08L 3320

Patent

active

041861566

ABSTRACT:
A crystallizable vinylidene chloride polymer powder is recovered from a latex obtained by emulsion polymerizing in sequence (a) a first monomer mixture comprising a predominant amount of vinylidene chloride and an ethylenically unsaturated comonomer which is copolymerizable therewith, such as acrylonitrile; (b) a minor amount of a polyfunctional monomer for providing graft sites on the product of (a); and (c) a second monomer mixture which is predominantly acrylonitrile, the amount of the second monomer mixture being in the range of about 10 to about 25 percent of the weight of the first monomer mixture. The so-formed solvent is admixed with an acrylic polymer and a suitable solvent and then spun into fibers having improved flame-retardancy.

REFERENCES:
patent: 2949437 (1960-08-01), Hobson
patent: 3288888 (1966-11-01), Wieckowski
patent: 3963790 (1976-06-01), Couchoud
patent: 4081498 (1978-03-01), Maranci
patent: 4101621 (1978-07-01), Yamamoto et al.
patent: 4145380 (1979-03-01), Myers et al.

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