Process using same stable foam latex with built-in self gel mechanism and coating
AssigneeThe Goodyear Tire & Rubber Company
InventorsJoseph P. Davis, Julius S. Nagy
Life of this patent
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Abstract
A heat sensitive, but stable, gellant system is added to a foam latex during manufacture of the latex or as an additive ingredient being incorporated at the time of preparing the liquid foam compound. The system is comprised of an amphoteric surfactant acid or an amphoteric surfactant acid neutralized with a fixed alkali, said surfactant being capable of both sensitizing the latex emulsifier and functioning as a stabilizer; a water soluble ionizable organic or inorganic acid capable of activating the gelation mechanism and a water soluble, volatile, organic or inorganic base which is added in an amount sufficient to neutralize the combination of the surfactant and the acid to a pH of 8 to 12.
Claims5
A heat sensitive stable gellant system comprising (A) an amphoteric surfactant acid, (B) an ionizable acid, and (C) a water soluble volatile base having a boiling point range of -33.degree. C. to 180.degree. C. at 760 millimeters wherein the amount of the base is sufficient to result in a total gellant system pH of from 8 to 12 wherein the weight ratio of amphoteric surfactant to acid to base is 0.25-5.0/0.25-5.0/0.5-7.5.
Dependencies are inferred from the claim text.