Curable fluoroelastomer compositions having improved compression set after curing are provided, as well as compositions that are of relatively high purity. These compositions include a hydrogen-containing fluoroelastomer having interpolymerized units derived from a cure-site monomer, a curative (optionally with a co-agent), and an organo-onium. When the fluoroelastomer contains units derived from vinylidene fluoride, the composition is essentially free from an inorganic acid acceptor. Methods of improving the compression of cured fluoroelastomer and cured fluoroelastomers having improved compression set are also provided.

Curable составы fluoroelastomer улучшая комплект обжатия после лечить обеспечены, также,как составы которые относительно высокой очищенности. Эти составы вклюают водопод-soderja fluoroelastomer имея interpolymerized блоки выведенные от мономера лечить-mesta, curative (опционно с чо-ve5estvom), и organo-onium. Когда fluoroelastomer содержит блоки выведенные от фторида винилидена, состав необходимо свободно от неорганического кисловочного акцептора. Методы улучшать обжатие вылеченного fluoroelastomer и вылеченных fluoroelastomers улучшая комплект обжатия также обеспечены.

 
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