Abstract: The invention relates to high purity fluoropolymers and processes for making such materials. These polymers are particularly suited for applications in the semiconductor industry. The process comprises removal of unstable polymer end groups by fluorination and removal of heavy metal impurities by extraction with an aqueous acid medium.

Abstract: A carboxyl group-containing fluorine copolymer is produced safely at a low cost by treating a vinylidene fluoride copolymer with a base and a peroxide, preferably in the presence of a phase-transfer catalyst such as a quaternary ammonium salt or a quaternary phosphonium salt.

Abstract: Disclosed is a fluoroelastomer composition comprising (1) a fluoroelastomer which comprises (a) tetrafluoroethylene, (b) a perfluoro(C1-C5 alkyl vinyl ether) and/or a perfluoro(C3-C11 alkoxyalkyl vinyl ether) and (c) a cyano group-containing perfluorovinyl ether, (2) a hydrotalcite compound, (3) a crosslinking agent and (4) titanium dioxide (TiO2). The fluoroelastomer composition is capable of producing a fluoroelastomer molded product having excellent metal corrosion inhibition properties, and particularly, the fluoroelastomer composition is capable of producing a fluoroelastomer molded product which generates only small amount of a corrosive material when exposed to high temperature.

Abstract: Acrylates having a high degree of halogenation, as well as polymers that include one or more mer units derived from such acrylates provide materials having tailorable optical and physical properties. The polymers find utility particularly in optical devices including optical waveguides and interconnecting devices.