- Perfluorocyclobutane-based polyester(arylene ether)s for applications in integrated optics
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Novel ester-containing aryl trifluorovinyl ether monomers and the resulting perfluorocyclobutane aromatic ether polymers have been synthesized and characterized to exhibit desirable properties for low optical loss waveguide applications. The monomers were
- Wong, Sharon,Ma, Hong,Jen, Alex K.-Y.,Barto, Rick,Frank, Curtis W.
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p. 5578 - 5585
(2007/10/03)
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- Reactive compounds containing perfluorocyclobutane rings
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Novel compounds have at least one perfluorocyclobutane ring and at least two functional groups suitable for forming condensation polymers. Preferably the compounds have a structures represented by Formula II: STR1 wherein R and R' independently represent optionally inertly substituted groups; X and X' represent any molecular structures which link R and R' with the perfluorocyclobutane ring; n and n' are the number of G and G' groups, respectively; and G and G' independently represent any reactive functional groups or any groups convertible into reactive functional groups. The compound are preferably prepared by a process of thermally dimerizing trifluorovinyl compound to form a compounds of Formula I wherein G represents G or G' in Formula II; X represents X or X' of Formual II; and n represents n or n' of Formula II, to form a compound having a perfluorocyclobutane group.
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- Perfluorovinyl compounds
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Compounds have a structure represented by Formula I: wherein R represents an unsubstituted or inertly substituted hydrocarbyl group; each X is independently selected from the group consisting of groups having at least one non-carbon atom between R and --CF=CF2 ; and m is an integer of from 1 to about 3. Polymers formed from such compounds are also prepared. The compounds are preferably prepared by a method by a process comprising the steps of: (a) forming a salt having anion corresponding to a compound of Formula II: wherein X, R and m are as defined for Formula I; (b) reacting the salt with a 1,2-dihalo-1,1,2, 2-tetrafluoroethane wherein the halo groups are iodine, bromine, chlorine or mixtures thereof, at least one halo group being bromine or iodine, to form a compound of Formula III: wherein X, R and m are as defined for Formula I and each Z is independently iodine or bromine; (c) eliminating the halogen atoms represented by Z to form the perfluorovinyl compound represented by Formula I.
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