Method of removing protein from dipped latex rubber goods
OwnerBalanchandra Chakkinggal Sekhar, Gopinati Balachandra Sekharinventors
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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.
Claims16
A method of removing protein from dipped latex rubber goods which method 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.
A method as claimed in any preceding claim wherein the aqueous alkali metal hydroxide solution is an aqueous potassium hydroxide solution.
A method as claimed in any preceding claim wherein the treatment with an aqueous alkali metal hydroxide solution is followed by washing with water.
A method as claimed in any preceding claim wherein the surface active agent or agents is or includes a non-ionic surfactant.
A method as claimed in any preceding claim which is followed by a powdering, siliconizing or chlorinating treatment.
Dipped latex rubber goods made from Hevea Brasiliensis (NR) latex which display extractable protein levels below 20 microgram per gram.
Dependencies are inferred from the claim text.