Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1973-09-17
1976-04-06
Smith, Edward J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 855AM, 260 855S, C08F 812, C08F 2044
Patent
active
039488705
ABSTRACT:
There is disclosed a method of preparing hydrophilic copolymers of acrylonitrile by initially polymerizing acrylonitrile with about 0.01 to about 30% by weight of a monomer selected from the group consisting of acrylamide; methacrylamide; monomers of the formula CH.sub.2 =CRCONHR.sup.1 wherein R is hydrogen or methyl and R.sup.1 is hydrogen, methyl or ethyl; N,N-dialkylacrylamides and methacrylamides and N-alkylol amides, thereafter subjecting said copolymer to hydrolysis by an aqueous acidic solvent for the monomers or swelling agent for the polymer comprising at least one compound selected from the group consisting of nitric acid, sulfuric acid, phosphoric acid, formic acid, zinc chloride and zinc chloride/HCl mixtures and subsequent isolating the product thus formed by removal of the acidic hydrolytic agent therefrom. The products thereof possess such properties as high tensile strength and high swelling capacity and they are accordingly suitable for the production of fibers, membranes, tubing and the like.
REFERENCES:
patent: 3200102 (1965-08-01), Kleiner
patent: 3410941 (1968-11-01), Dagon et al.
Kucera Josef
Prokop Jaroslav
Stoy Artur
Stoy Vladimir
Urbanova Renata
Ceskoslovenska akademie ved
Smith Edward J.
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