Process for producing deproteinized natural rubber latex
AssigneesSumitomo Rubber Industries, Ltd., Kao Corporation
InventorsAtsuko Kawasaki, Shinichi Nakade, Toshiaki Sakaki
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Abstract
A process is disclosed, by which protein can be removed easily and efficiently from natural rubber latex so that deproteinized natural rubber latex can be produced with high productivity and low cost. Particularly, a process for the production of deproteinized natural rubber latex is disclosed, which comprises treating natural rubber latex with a proteolytic enzyme and a surfactant to decompose protein in natural rubber latex, washing the treated natural rubber latex in the presence of a salt. According to the process, deproteinized natural rubber latex useful as a counter-allergy material having stable qualities can be produced easily with high productivity and low cost.
Claims20
A process for producing a deproteinized natural rubber latex which comprises treating natural rubber latex with a proteolytic enzyme and a surfactant to decompose protein in the natural rubber latex, and washing the treated natural rubber latex in the presence of a salt, wherein said salt is at least one compound selected from the group consisting of carbonate salts, bicarbonate salts, thiosulfate salts, borate salts, and amine salts, wherein said salt is present in an amount of from 1 to 50 parts by weight per 100 parts by weight of the solid rubber content of the latex, and wherein said salt is different from said surfactant.
A process for producing a deproteinized natural rubber latex which comprises treating natural rubber latex with a proteolytic enzyme and a surfactant to decompose protein in the natural rubber latex, and washing the treated natural rubber latex in the presence of a salt, wherein said salt is at least one compound selected from the group consisting of carbonate salts, bicarbonate salts, thiosulfate salts, borate salts, and amine salts, and wherein said salt is present in an amount of from 1 to 50 parts by weight per 100 parts by weight of the solid rubber content of the latex, and wherein said surfactant is the same as said salt.
Dependencies are inferred from the claim text.