Base resistant fluoroelastomers

C - Chemistry – Metallurgy – 08 – F

Patent

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402/403

C08F 214/26 (2006.01) C08K 5/18 (2006.01) C08L 27/18 (2006.01)

Patent

CA 1271891

TITLE BASE RESISTANT FLUOROELASTOMERS ABSTRACT OF THE DISCLOSURE A base resistant, substantially amorphous fluoroelastomer comprising (1) 10-40 mole percent ethylene units, (2) 32-60 mole percent tetrafluoroethylene units, (3) 20-40 mole percent perfluoro(alkyl vinyl ether) units wherein the alkyl group contains 1-5 carbon atoms, and (4) a cure-site monomer. Such fluoroelastomers are resistant to attack by amines, strong bases and hydrogen sulfide and possess a combination of good low temperature and high temperature properties and they are resistant to oil swell. AD-5491A

513538

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