Abstract: Provided are polyfluorinated carboxylic acids and their salts containing an ethylene-tetrafluoroethylene moiety. The polyfluorinated carboxylic acids and salts are useful as surfactants in polymerization processes.

Abstract: Polyfluorinated carboxylic acids and their salts containing an ethylene-tetrafluoroethylene moiety, which are useful as surfactants in a process for the dispersion polymerization of fluorinated monomer in an aqueous polymerization medium.

Abstract: A compound of formula (I): wherein k is 1 or 2; Y is —CH2CH(CF3)2 or —(CH2)nCF; X is hydrogen, —(CH2)nRf, or —C(O)[CF(A)]p-B—Rf, wherein B is a covalent bond, —O— or —(CH2)m—; A is —F or —CF3; and each Rf is independently C1 to C6 perfluorinated alkyl, optionally interrupted by one or more oxygens; Ro is Ro1 or is an alkyl having from about 10 to about 100 carbon atoms, interrupted or substituted by one or more hydrophilic groups; R is hydrogen or a C1 to C4 alkyl; and Ro1 is an aliphatic group of from about 10 to about 100 carbon atoms, interrupted by about from about 5 to about 50 ether oxygens; provided that 1) when Y is —(CH2)nRf, Ro is Ro1; 2) when X is hydrogen, Y is —CH2CH(CF3)2; and 3) when X is —(CH2)nRf and Y is —(CH2)nRf, Ro is Ro1.

Abstract: A copolymer composition comprising monomers copolymerized in the following percentages by weight: (a) from about 20% to about 95% of a monomer, or mixture of monomers, of formula (I): CnF2n+1(CH2)x[(CF2CF2)y(CH2CH2)z]m-L-C(O)—C(R)?CH2??(I) wherein R is H, Cl, F or CH3, L is O, S, NH, S—(CH2)rO, S—(CH2)rNH, OC(O)NH—CH2CH2O, NHC(O)NHCH2CH2O, S—(CH2)rOC(O)NHCH2CH2O, or S(CH2)rNHC(O)NHCH2CH2O, and (b) from about 5% to about 80% of at least one of: (i) an alkyl (meth)acrylate monomer having a linear, branched or cyclic alkyl group of from about 6 to about 18 carbons; or (II) a monomer of formula (II) (R2)2N—R3—O—C(O)—C(R)?CH2??(II) wherein R is H, Cl, F or CH3, each R2 is independently a C1 to C4 alkyl; and R3 is a divalent linear or branched C1 to C4 alkylene; and wherein the nitrogen is from about 40% to 100% salinized; or (iii) a mixture thereof.

Abstract: An oligomer of the formula (I): CnF2n+1(CH2)x[(CF2CF2)y(CH2CH2)z]mG??(I) wherein G is an I; OH; OC(O)CH?CH2; OC(O)CCH3?CH2; OC(O)CCl?CH2; NR1H; N3; NCO; SQ wherein Q is H, alkyl, (CH2)nOH, (CH2)nNH2, (CH2)nOC(O)C(Me)?CH2, or (CH2)nNHC(O)C(Me)?CH2; SCN; COOH; SO3H; NHCOCH?CH2; NHCOC(CH3)?CH2); OC(O)NHCH2CH2OC(O)C(CH3)?CH2; or OC(O)NHCH2CH2OC(O)C(CH3)?CH2; subscript n is an integer from 1 to about 6, subscript x is an integer from 1 to about 6, subscripts y, z and m are each independently 1, 2 or 3, or a mixture thereof, the total number of carbons in said formula (I) excluding G ranges from about 8 to about 22, and a process for preparation thereof.

Abstract: A composition comprising a compound of formula (I) or (II): (A)w-P(O)(O?M+)3-w ??(I) or wherein A is Rf—(CH2)k?[(CF2CF)y—(CH2CH2)z]mO and contains from about 8 to about 22 carbon atoms; Rf is CnF2n+1; n and k are each independently 1 to about 6; y, z, and m are each independently 1, 2, 3, or mixture thereof; w is 1 or 2 or a mixture thereof; and M is hydrogen, ammonium ion, an alkali metal ion, or an alkanolammonium ion.

Abstract: A polymer having at least one carbamate linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, and (b) at least one fluorinated compound selected from the formula (I): Rf(CH2)x[(CF2CF2)y(CH2CH2)z]m(R1)r—XH ??(I) wherein Rf is a perfluoroalkyl group having 1 to about 6 carbon atoms; subscript x is 1 to about 6; subscripts y, z and m are each independently 1, 2 or 3, or a mixture thereof; subscript r is 0 or 1; the total number of carbons in said formula (I) excluding (R1)r—XH ranges from about 8 to about 22; X is —O—, —NR—, —S—, —S(CH2)tO—, or —S(CH2)tNR—; subscript t is from 1 to about 10; R is H or C1-4 alkyl; R1 is certain divalent radicals; n is 2 to 4; s is 1 to about 50; R2, R3, and R4 are each independently hydrogen or a C1-C6 alkyl group; and (ii) optionally reacting with (c) water, a linking agent, or a mixture thereof.

Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2?C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2?C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.

Abstract: A method for preparing packages holding liquid alkanes exhibiting high transparency and photochemical stability at wavelength of about 193 nm, wherein a sealable vessel is flushed with an inert gas to form an atmosphere of inert gas, a liquid alkane is charged into the vessel in the atmosphere of inert gas, and the charged vessel is sealed.

Abstract: A compound of formula (I): wherein k is 1 or 2; Y is —CH2CH(CF3)2 or —(CH2)nCF; X is hydrogen, —(CH2)nRf, or —C(O)[CF(A)]p-B—Rf, wherein B is a divalent radical selected from the group consisting of a covalent bond, —O— and —(CH2)m—; A is —F or —CF3; and each Rf is independently C1 to C6 perfluorinated linear or branched alkyl, optionally interrupted by one or more oxygens; Ro is Ro1 or is a linear or branched alkyl having from about 10 to about 100 carbon atoms, interrupted or substituted by one or more hydrophilic groups selected from the group consisting of —O—, —OH, —NR—, —N(R)2, and —C(O)NR—, wherein a) the ratio of hydrophilic groups to carbon atoms is from about 1:2 to about 1:10; b) each carbon atom has at most one hydrophilic group bonded to it, and c) covalent bonding between hydrophilic groups is absent; R is hydrogen or a C1 to C4 linear or branched alkyl; and Ro1 is a linear or branched aliphatic group of from about 10 to about 100 carbon atoms, interrupted by about from about 5 to about 50 e

Abstract: Disclosed are partially fluorinated and fully fluorinated polymers that are substantially transparent to ultraviolet radiation at wavelengths from approximately 150 nanometer to 260 nanometers.

Abstract: Processes and apparatuses using polycyclic fluoroalkanes that are highly transparent to UV wavelengths ranging from about 190 nm to 260 nm are provided. The polycylic fluoroalkanes are useful in a wide variety of applications, including optical couplants, optical cements, optical elements, optical inspection media for semiconductor wafers and devices, and immersion photolithography, particularly at 193 and 248 nm exposure wavelength.

Abstract: A composition comprising a copolymer having repeating units in any sequence of Formula I wherein Rf is a straight or branched perfluoroalkyl group having from about 1 to about 20 carbon atoms, or a mixture thereof, which is optionally interrupted by at least one oxygen atom, X3 is oxygen or X1, each X1 is independently an organic divalent linking group having from about 1 to about 20 carbon atoms, optionally containing an oxygen, nitrogen, or sulfur, or a combination thereof, G is F or CF3, A is an amide, j is zero or positive integer, X2 is an organic linking group, Y is O, N or S, h is zero when Y is N, and h is one when Y is O or S, Z is H, a straight or branched alkyl group having from about 1 to about 4 carbon atoms, or halide, B is H or wherein Rf, X1, X3, G, A, and j are as defined above, provided that when B is H, j is a positive integer, m is a positive integer, q is zero or a positive integer when Y is O, and q is a positive integer when Y is N or S, p is zero or a positive integer

Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2?C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2?C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.

Abstract: The present invention is drawn to the use of alkanes that are highly transparent to UV wavelengths ranging from about 170 nm to 260 nm in optical couplants, optical cements, optical elements, optical inspection media for semiconductor wafers and devices, and immersion photolithography, particularly at 193 and 248 nm exposure wavelength.

Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2?C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2?C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.

Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2?C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2?C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.

Abstract: Processes and apparatuses using polycyclic fluoroalkanes that are highly transparent to UV wavelengths ranging from about 190 nm to 260 nm are provided. The polycylic fluoroalkanes are useful in a wide variety of applications, including optical couplants, optical cements, optical elements, optical inspection media for semiconductor wafers and devices, and immersion photolithography, particularly at 193 and 248 nm exposure wavelength.

Abstract: Polycyclic fluoroalkanes that are highly transparent to UV wavelengths ranging from about 190 nm to 260 nm are provided. The polycyclic fluoroallkanes are suitable for use in a variety of applications, particularly in the vacuum UV and deep UV region of the electromagnetic spectrum. For example, the polycyclic fluoroalkanes are useful in optical couplants, optical cements, optical elements, optical inspection media for semiconductor wafers and devices, and immersion photolithography, particularly at 193 and 248 nm exposure wavelength.

Abstract: Processes for preparing high purity polycyclic fluoroalkanes are provided. The polycyclic fluoroalkanes are useful as solvents, cleaning agents, heat transfer fluids, refrigerants, lubricants, and, in a preferred embodiment, by virtue of high refractive index and high transparency to UV wavelengths, optical applications in the vacuum ultraviolet (VUV).