Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1980-02-05
1982-10-19
Lieberman, Paul
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
526210, C08F 246
Patent
active
043549071
ABSTRACT:
A process for the production of water-soluble, substantially solid, cationic polymers comprises the step of irradiating an aqueous solution with ionizing radiation, the aqueous solution comprising at least 50% by weight of one, or two or more of specific type of amino ester or esters optionally being accompanied by acrylamide, and at least 0.1% by weight of a specific type of alcohol as an agent for inhibiting water-insolubility of the resulting polymer.
The amino esters have the generic formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group; R.sub.2 represents a hydrogen atom or an alkyl group having 1-4 carbon atoms; R.sub.3 and R.sub.4 each represents an alkyl group having 1-4 carbon atoms and x.sup.(-) represents an anion; or from the combination of at least one of said amino esters and acrylamide.
The alcohols have the formula ##STR2## wherein X', Y' and Z' each represents a hydrogen atom or a hydroxyl group, providing at least one of said X', Y' and Z' is OH; and L, m and n each represents a natural number; and include isopropyl alcohol, isobutyl alcohol, sec. butyl alcohol, glycerine and propylene glycol.
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Ishigaki Isao
Machi Sueo
Okada Toshimi
Washio Shigeaki
Japan Atomic Energy Research Institute
Koeckert A. H.
Lieberman Paul
Taki Chemical Co. Ltd.
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