Patent ID: 7989546

Claim:
A method for the preservation of natural rubber latex, comprising adding to natural rubber latex at least one hydrophobically modified saccharide, wherein the hydrophobically modified saccharide is a hydrophobically modified fructan, a starch hydrolysate derivative, or mixtures thereof, whereby the starch hydrolysate derivate has formula [B](-M)s, wherein [B] represents a starch hydrolysate moiety with a dextrose equivalent (D.E.) value ranging from 2 to 47, (-M) represents a hydrophobic moiety, substituting at least one hydrogen atom of a hydroxyl group of [B], wherein (-M) is selected from the group consisting of: an alkylcarbamoyl radical of formula R1-NH—CO—, an alkenyl-carbamoyl radical of formula R2-NH—CO—, an alkylcarbonyl radical of formula R1-CO—, an alkenylcarbonyl radical of formula R2-CO—, an alkyl radical of formula R1-, an alkenyl radical of formula R2-, and a hydroxyalkyl radical of formula R3-, wherein: R1 represents a linear or branched alkyl group with 4 to 22 carbon atoms, R2 represents a linear or branched alkenyl group with 4 to 22 carbon atoms, R3 represents a linear or branched hydroxyalkyl group with 4 to 22 carbon atoms of formula —CHR′—CHOH—R″, wherein R′ is hydrogen or a linear or branched alkyl radical containing 2 to 20 carbon atoms; and R″ is a linear or branched alkyl radical containing 2 to 20 carbon atoms; and s represents the number of hydrophobic moieties (-M) attached to [B], expressed as the number average degree of substitution (av. DS) per individual fructosyl and/or glucosyl unit and ranging from 0.01 to 2.0.