Processing aids for natural and synthetic rubber
AssigneeTechnical Processing, Inc.
InventorJuan E. Aguirre
Life of this patent
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Abstract
A partially-neutralized, fatty-acid modified alkylbenzene sulfonic acid is useful as a processing aid for use with natural, synthetic or reclaimed rubber, and it is useful in the mastication and peptizing steps of rubber processing, as well as in dispersing and emulsifying additives for the rubber and in improving the wetting characteristics of the rubber. The partially-neutralized, fatty-acid modified sulfonic acid may be formulated into a composition having particular utility as a lubricant for rubber by mixing with a fatty acid amide, a polyethylene glycol, a wax and, optionally, a fluorinated surfactant.
Claims9
A partially-neutralized, fatty-acid modified alkylbenzene sulfonic acid useful as a rubber processing aid produced by heating at an elevated temperature an alkylbenzene sulfonic acid whose alkyl group contains from about 10 to about 14 carbon atoms with a saturated or unsaturated long chain fatty acid having from about 14 to about 20 carbon atoms in a weight ratio of fatty acid to sulfonic acid of at least about 1:1 until the pH of the resulting mixture is from about 2 to about 3, and thereafter adding base to adjust the pH of the mixture to from about 4.5 to about 6.5.
Dependencies are inferred from the claim text.