Stereoregular acrylonitrile polymer and composition comprising s

Details Stereoregular acrylonitrile polymer and composition comprising s Stereoregular acrylonitrile polymer and composition comprising s

1991-12-10

1992-11-10

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526183, 526177, 5261693, 526123, C08F12044

Patent

active

051624761

ABSTRACT:
Disclosed is a linear acrylonitrile polymer having a viscosity average molecular weight of at least 50,000, which has a stereoregularity such that the polymer satisfies requirements of I>0.4 and (I+3S)>0.95, wherein I represents the fraction of the isotactic triad and S represents the fraction of the syndiotactic triad. A shaped article is made from a composition comprised of the linear acrylonitrile polymer and a solvent or plasticizer which is selected from a protonic acid and an aqueous solution thereof, an aqueous inorganic salt solution, and a mixture of an organic solvent and an inorganic salt. The fiber made therefrom has an enhanced drawability.

REFERENCES:
patent: 3117111 (1964-01-01), Natta
patent: 3231552 (1966-01-01), Natta
patent: 3246772 (1966-03-01), Natta
M. Minagawa et al., (1989) Macromolecules 22, 2054-2058.
M. Minagawa et al., (1988) Macromolecules 21, 2387-2391.
Chem. Abstracts 110: 214678r.
Chem. Abstracts 112: 140098u.

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