Rubber containing microencapsulated antidegradants

Details Rubber containing microencapsulated antidegradants Rubber containing microencapsulated antidegradants

C - Chemistry, Metallurgy

08

K

400/1103, 400/13

C08K 9/10 (2006.01) C08L 21/00 (2006.01)

Patent

CA 1313915

Abstract of the Disclosure RUBBER CONTAINING MICROENCAPSULATED ANTIDEGRADANTS There is disclosed the use of microencapsulated antidegradants in rubber and a process for the production of microencapsulated antidegradants. More specifically, this invention is directed to the cellulose acetate microencapsulation of para-phenylene diamine based antiozonants at wall to core ratios greater than 1:1 but less than 4:1. The microcapsules preferably have a particle diameter of less than 50 microns. The microencapsulated antidegradant prepared and used according to this invention provides long term protection to rubber articles that are subject to ozone and oxygen attack.

579212

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