摘要:
Disclosed herein are novel amorphous tetrafluoroethylene-hexafluoropropylene (TFE-HFP) dipolymers, and other copolymers containing TFE, HFP and a third monomer, many of which are more random than previous amorphous TFE-HFP copolymers, as well as a novel high productivity continuous process for making these polymers. The polymers are particularly useful in the form of coatings, films and encapsulants.
摘要:
Disclosed herein are novel amorphous tetrafluoroethylene-hexafluoropropylene (TFE-HFP) dipolymers, and other copolymers containing TFE, HFP and a third monomer, many of which are more random than previous amorphous TFE-HFP copolymers, as well as a novel high productivity continuous process for making these polymers. The polymers are particularly useful in the form of coatings, films and encapsulants.
摘要:
The present invention pertains to photoimaging and the use of photoresists (positive-working and/or negative-working) for imaging in the production of semiconductor devices. The present invention also pertains to novel hydroxy ester-containing polymer compositions that are useful as base resins in resists and potentially in many other applications.
摘要:
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.
摘要:
Disclosed are partially fluorinated and fully fluorinated polymers that are substantially transparent to ultraviolet radiation at wavelengths from approximately 150 nanometer to 260 nanometers.
摘要:
Disclosed herein are novel amorphous tetrafluoroethylene-hexafluoropropylene (TFE-HFP) dipolymers, and other copolymers containing TFE, HFP and a third monomer, many of which are more random than previous amorphous TFE-HFP copolymers, as well as a novel high productivity continuous process for making these polymers. The polymers are particularly useful in the form of coatings, films and encapsulants.
摘要:
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.
摘要:
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 when Y is O, and p is a positive integer when Y is N or S, each W is independently various copolymer units.
摘要:
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.
摘要:
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; andRo1 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 ether oxygens, wherein a) the ratio of ether oxygen to carbon atoms is from about 1:2 to about 1:3, b) each carbon atom has at most one ether oxygen atom bonded to it, and c) covalent bonding between ether oxygen atoms is absent;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.