Abstract: The present invention provides for a method of concentrating synthetic rubber latices, in particular all emulsion polymerised diene rubbers latices such as styrene-butadiene rubber (SBR) latex, neoprene latex, etc. The technique generally entails, firstly, adding creaming agents, such as tamarind seed powder or alginate (including ammonium alginate) to the synthetic rubber latex so that clustering of the latex particles may be achieved. The clustered latex particles are thus larger and is thus able to be centrifuged in the usual manner using conventional centrifuges or techniques to separate the concentrate from the skim.

Abstract: A method of removing protein from dipped latex rubber goods comprises: a) removing any corn starch powder which has previously been applied to the goods, by treating the goods with hot water to dissolve the powder; b) treating the goods with an aqueous solution comprising an alkali metal hydroxide to remove protein; and c) treating the goods with one or more surface active agents in aqueous solution to remove remaining protein.