A method for producing hydrogenated nbr latex

Details A method for producing hydrogenated nbr latex A method for producing hydrogenated nbr latex

C - Chemistry, Metallurgy

08

J

C08J 3/07 (2006.01)

Patent

CA 2154277

A process for producing a hydrogenated NBR latex wherein the latex particles have each a sufficiently small diameter and which has a sufficient quiescence stability without using any harmful solvent and restricting the type of the emulsifying agent. The production process comprises mixing an organic phase containing hydrogenated NBR dissolved in an organic solvent with an aqueous phase containing an emulsifying agent dissolved in water to effect emulsification and then distilling off the solvent, and is characterized by effecting the emulsification in the presence of an alcohol.

Procédé de production de latex de caoutchouc N.B.R. hydrogéné dans lequel les particules de latex ont chacune un diamètre suffisamment petit, et le latex a une stabilité au repos suffisante obtenue sans utilisation de solvant nocif ni limitation du type d'agent émulsionnant. Le procédé de production consiste à mélanger l'une à l'autre une phase organique renfermant du caoutchouc N.B.R. hydrogéné dissous dans un solvant organique, et une phase aqueuse renfermant un agent émulsionnant dissous dans de l'eau, afin de provoquer l'émulsification, puis à éliminer le solvant par distillation. Ledit procédé est caractérisé en ce que l'on effectue l'émulsification en présence d'un alcool.

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