Liquid-absorbent polymer and gelatinoid product

Details Liquid-absorbent polymer and gelatinoid product Liquid-absorbent polymer and gelatinoid product

1998-05-05

1999-03-23

Nutter, Nathan M.

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

Synthetic resins

From carbohydrate or derivative as a reactant

527313, 527314, 527315, C08G 8300

Patent

active

058861246

ABSTRACT:
Disclosed are a liquid-absorbent polymer and a substantially clear gelatinoid product. The liquid absorbent polymer comprises a saponified graft copolymer of starch and a polynitrile species, such as polyacrylonitrile. In accordance with the disclosed invention, the liquid-absorbent polymer is prepared from a derivatized starch, the derivatized starch having a degree of substitution sufficient to substantially inhibit starch-starch interactions in the gelatinoid product formed upon mixing of the polymer with liquid. Preferred starches have a degree of substitution (DS) of at least about 0.01. Upon saponification of the liquid-absorbent polymer and placing of the polymer into absorbent contact with a liquid, a gelatinoid product will be formed. The gelatinoid product thus formed will have a substantially homogeneous index of refraction, and thus will be substantially clear.

REFERENCES:
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patent: 4769414 (1988-09-01), Kightlinger et al.
Brandrup et al., eds, Polymer Handbook, Third Edition, John Wiley & Sons, Inc. pp. VI/438-439, 1989.

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