Process for producing carboxyl cationites

Details Process for producing carboxyl cationites Process for producing carboxyl cationites

1977-06-02

1978-10-17

Lilling, Herbert J.

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

Synthetic resins

Ion-exchange polymer or process of preparing

526194, 526204, 526261, 526306, 526915, C08J 520, C08F 440, C08F 2070

Patent

active

041208315

ABSTRACT:
A process for producing carboxyl cationites which comprises dissolution of comonomers such as methacrylic or acrylic acid and a vinyl-containing amide such as hexahydro-1,3,5-triacryloyltriazine, N, N'-methylenediacrylamide, N, N'-ethylenedimethacrylamide or N, N'-hexamethylenedimethacrylamide as well as an initiator of radical polymerization in a 5-50% acetic acid. Weight ratio between the unsaturated carboxylic acid and vinyl-containing amide is varied from 3:1 to 12:1; concentration of said comonomers in a 5-50% acetic acid is varied within the range of from 10 to 30%. The resulting reaction mixture is dispersed in polyethylsiloxane or polymethylphenylsiloxane liquid at a weight ratio between the reaction mixture and said silicone liquid ranging from 1:3 to 1:5 respectively. Thereafter, copolymerization is effected in a suspension at a temperature ranging from 20.degree. to 100.degree. C. The process according to the present invention makes it possible to obtain carboxyl cationites with reproducible properties and structure in the form of spherically-shaped granules possessing a high reversible sorption capacity with respect to proteins and enzymes in combination with high hydrodynamic properties.

REFERENCES:
patent: 2885371 (1959-05-01), Tavani et al.
patent: 2963453 (1960-12-01), Hwa et al.
patent: 3037052 (1962-05-01), Bortnick
patent: 3988305 (1976-10-01), Stoy et al.

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