Patent ID: 9644089
Date: 2017-05-09
CPC Classifications: B29C,B29K,C08J,C08L

Claim:
1. A process for curing an elastomer composition in the presence of oxygen, the process comprising the steps of: A) mixing at least one elastomer comprising ethylene-propylene terpolymer, at least one non-elastic co-polymer comprising at least two different monomers in polymerized form, wherein the elastomer and non-elastic co-polymer are present in the elastomer composition at weight ratios from 50:50 to 75:25, and at least one organic peroxide formulation to provide a mixture, wherein the elastomer is saturated or unsaturated, the polymer is saturated or unsaturated, and said polymer does not comprise chlorinated polyethylene or chlorosulfonated polyethylene; and wherein the organic peroxide formulation comprises i) at least one organic peroxide, ii) at least one moiety chosen from bis-, tri- and higher poly-maleimides, and bis-, tri- and higher poly-citraconimides, and iii) at least one sulfur accelerator; B) curing said mixture in the presence of oxygen.