A copolymer includes 20 mol % to 80 mol % of —CF.sub.2CF.sub.2O— units, 20 mol % to 80 mol % of —CF(CF.sub.3)CF.sub.2O— units, and 0 mol % to 45 mol % of one or more additional perfluoroalkyleneoxy units. The copolymer has a molecular weight M.sub.n of 1,500 to 20,000, a viscosity index of 100 to 220, and an average tetrafluoroethylene oxide (TFEO) run length less than 6. A process of forming a perfluoroalkyl polyether copolymer includes feeding a gas stream containing TFEO and hexafluoropropylene oxide (HFPO) into a reactor containing a fluorinated solvent, a fluoride salt, an ether, and an acid fluoride to form an acid fluoride-containing polymer. The process also includes hydrolyzing the acid fluoride-containing polymer to form a perfluoroalkyl polyether carboxylic acid or carboxylate salt. The process further includes distilling off the fluorinated solvent and treating the perfluoroalkyl polyether carboxylic acid or carboxylate salt with elemental fluorine to obtain the perfluoroalkyl polyether copolymer.

A curable composition of the present invention includes a cationic polymerizable compound; a thermal polymerization initiator; and a storage stabilizer, in which the cationic polymerizable compound includes at least two selected from the group consisting of a glycidyl ether compound, an alicyclic epoxy compound, and an oxetane compound, a content of the thermal polymerization initiator is from 0.3 to 3 parts by mass with respect to 100 parts by mass of the cationic polymerizable compound, and chain curing is enabled by thermal energy generated by a polymerization reaction of the cationic polymerizable compound.

The fluorine-containing ether compound is represented by the following formula (1): R.sup.1—R.sup.2—CH.sub.2—R.sup.3—CH.sub.2—R.sup.4. In the formula (1), R.sup.1 is represented by the following formula (2), R.sup.2 is represented by the following formula (3), R.sup.3 is a perfluoropolyether chain, and R.sup.4 is an organic end group different from R.sup.1—R.sup.2— and contains two or three polar groups, wherein each polar group is bonded to a different carbon atom, and the carbon atoms to which the polar groups are bonded are bonded to one another via a linking group containing a carbon atom to which the polar group is not bonded. In the formula (2), R.sup.5 is an alkoxy group selected from the group consisting of a methoxy, an ethoxy and a propoxy group. In the formula (3), w is 2 or 3.

##STR00001##

An article comprising a flexible polymer substrate having two major surfaces, a surface layer comprising metal, metal oxide, silicon flexible polymer substrate; and a coating disposed on at least one surface layer, wherein the coating comprises a fluorinated polymer bonded to the surface layer; wherein the fluorinated polymer has the following general formula (I), where n=6 to 120; and where n=6 to 120; and where m=1 to 25 (R1); (R2); or where m=1 to 25 (R3).

##STR00001##

The present invention is capable of producing a fluoropolyether group-containing polymer, which is represented by general formula (1)

##STR00001##

(in the formula, Rf is a monovalent or divalent fluoropolyether group-containing polymer residue, X is independently a divalent organic group, and α is 1 or 2),
preferably has a number-average molecular weight of 1,000 to 50,000 in terms of polystyrene, and has both a terminal olefin moiety easily converting a functional group and a secondary hydroxyl group having high reactivity, by causing an organometallic reagent having β-hydrogen, specifically, an organometallic reagent having an aliphatic unsaturated double bond (olefin moiety) at a terminal thereof and having β-hydrogen, to act on a fluoropolyether group-containing polymer having a carbonyl group at a terminal thereof.

Provided is a compound which has heat resistance and decomposition resistance and with which a monomolecular film having a reduced thickness can be obtained. A fluoropolyether compound in accordance with an aspect of the present invention is represented by R.sup.1—C.sub.6H.sub.4O—CH.sub.2CH(OH)CH.sub.2OCH.sub.2—R.sup.2—CH.sub.2—O—CH.sub.2CH(OH)CH.sub.2—OC.sub.6H.sub.4—R.sup.1 where R.sup.1 is a hydrogen atom, an alkoxy group having 1 to 4 carbon atoms, an amino group, or an amide group, R.sup.2 is —CF.sub.2O(CF.sub.2CF.sub.2O).sub.xCF.sub.2—, and x is a real number of 1 to 35.

This invention relates to a photosensitive color ink composition for a bezel, including (A) a cationic polymerizable alicyclic epoxy monomer, (B) a cationic polymerizable aliphatic epoxy monomer, (C) an oxetane monomer, (D) a photopolymerization initiator, and (E) a colorant, and to a bezel pattern formed using the same.

The present invention relates to hexafluoropropylene oxide polymer composition and a process of preparing ofhexafluoropropylene oxide polymer by an anionic polymerization, and in particular the hexafluoropropylene oxide polymer composition comprises an anionic initiator, a polar solvent, hexafluoropropylene and hexafluoropropylene oxide. The hexafluoropropylene oxide polymer is prepared under particular reaction conditions by using the composition, hexafluoropropylene oxide poylymer prepared by using the composition according to a preparation process herein has a weight average molecular weight (Mw) of 1,500-4,000 at −10 to 20° C.

The present invention relates to anhydrous tetraalkyl pnictogen perfluoroalkoxy salts and a process to produce anhydrous tetraalkyl pnictogen perfluoroalkoxy salts. The process involves contacting a hydrofluoroether and an amine to produce a tetraalkyl pnictogen perfluoroalkoxy salt in the presence of a solvent. The present invention also relates to processes of preparing fluoroalkyl ether acid fluoride polymers using tetraalkyl pnictogen perfluoroalkoxy salt. The present invention further relates to some novel fluorinated alkyl polyether polymers.

A curable composition includes a functionalized fluoropolyether comprising at least one first free-radically reactive functional group, a functionalized polysiloxane comprising at least one second free-radically reactive functional group, and an effective amount of a free-radical curing system. The curable composition can be cured to making a fluoropolyether-polysiloxane elastomer. Compositions and shaped articles including the fluoropolyether-polysiloxane elastomer are also disclosed.