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7598312 |
Process for preparing a halogenated polymer and device for its implementation
A process for preparing a halogenated polymer in a medium comprising liquid or supercritical carbon dioxide, comprising a step involving the radical polymerization of at least one halogenated...
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7582713 |
Ion exchange polymer dispersion, process for its production and its use
A thickened ion exchange polymer dispersion is obtained by applying ultrasonic vibration or a shearing force to an ion exchange polymer dispersion having a fluorinated polymer having sulfonic acid...
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7569326 |
Sulfonium salt having polymerizable anion, polymer, resist composition, and patterning process
A sulfonium salt having a polymerizable anion generates a strong sulfonic acid upon exposure to high-energy radiation so that it facilitates effective scission of acid labile groups in chemically...
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7557164 |
Membranes of fluorinated ionomer blended with nonionomeric fluoropolymers for electrochemical cells
Blends of fluorinated ionomer with at least two nonionomeric fluoropolymers provide fuel cell membranes whose tensile strength and conductivity are superior to blends using a single fluoropolymer.
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7544754 |
Crosslinked polymers with amine binding groups
Crosslinked polymeric materials are described that contain pendant amine capture groups. The amine capture groups include N-sulfonylaminocarbonyl groups that can react with amine-containing...
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7544751 |
Polymerization products and biomedical devices containing same
Polymerization products formed from a monomeric mixture comprising (a) one or more first monomers of the general formula I:
A-L-R 1...
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7538169 |
Ion conductive film and fuel cell using the same
Disclosed is an ion conductive film containing a composite body between an ion conductive polymer and a nitrogen-containing compound. The nitrogen-containing compound has an immobilized portion to...
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7534844 |
Monomer substituted photoacid generator of fluoroalkylsulfon and a polymer thereof
The present invention relates to a novel compound with a fluoroalkylsulfonium photoacid generating group and novel copolymers having superior solubility in organic solvents, which is prepared from...
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7534515 |
Acid-base proton conducting polymer blend membrane
An acid-base proton conducting polymer blend membrane is provided. The acid-base proton conducting polymer blend membrane comprises a first acidic polymer having acidic subunits, a second basic...
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7531610 |
Fluorosulfonyl group-containing compound, method for its production and polymer thereof
A compound containing two fluorosulfonyl groups which are groups convertible to sulfonic acid groups, an intermediate therefor, and methods for their production with high productivity, are...
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7514483 |
Aqueous dispersion of polytetrafluoroethylene and process for its production
An aqueous dispersion of polytetrafluoroethylene (PTFE) comprising from 55 to 70 mass % of PTFE fine particles having an average particle diameter of from 0.1 to 0.5 μm, from 0.0001 to 0.02 mass...
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7488788 |
Electrolyte polymer for polymer electrolyte fuel cells, process for its production and membrane-electrode assembly
To provide an electrolyte polymer for polymer electrolyte fuel cells, made of a perfluorinated polymer having sulfonic groups, characterized in that in a test of immersing 0.1 g of the polymer in...
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7482415 |
Process for producing fluoroionomer, method for purification and concentration of the ionomer, and method of film formation
The present invention provides a process for producing a fluorinated ionomer, comprising copolymerizing, in the presence of a polymerization initiator, (i) a compound represented by Formula (I)
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7473748 |
Vinyl monomer with superacid ester group and polymer of the same
A superacidic ester group is useful in the production of ionomers for polymer electrolyte fuel cells. A polymer is produced from said vinyl monomer. A process produces a polymer containing a...
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7470749 |
Block polymer, process for producing a polymer, and polymer electrolyte fuel cell
A polymer electrolyte fuel cell comprising a membrane-form polymer electrolyte, a cathode disposed on one side of the polymer electrolyte, and an anode disposed on the other side of the polymer...
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7470745 |
Perfluoroether based polymers
A composition which provides surface effects to substrates comprising a polymer containing at least one urea linkage prepared by
(i) reacting (1) at least one organic diioscyanate,...
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7468403 |
Method for purification of aqueous fluoropolymer emulsions, purified emulsions, and fluorine-containing finished articles
The present invention provides a method of purifying an aqueous fluoropolymer emulsion by which fluorine-containing surfactants can be removed without lowering the dispersibility of the aqueous...
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7435498 |
Polymer electrolyte membranes crosslinked by nitrile trimerization
A method is provided for making a crosslinked polymer electrolyte, typically in the form of a membrane for use as a polymer electrolyte membrane in an electrolytic cell such as a fuel cell, by...
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7417099 |
Fluorochemical sulfonamide surfactants
Described are fluorochemical surfactants derived from nonafluorobutanesulfonyl fluoride that contain polyalkyleneoxy side chains and may be copolymerized with acrylic acid or methacrylic acid to...
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7399791 |
Fluorinated membranes
Ionomeric membranes comprising (per)fluorinated, se-micrystalline or amorphous, ionomeric polymers, having equivalent weight (EW) from 380 g/eq to 1,800 g/eq, which used in fuel cells, under the...
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7384730 |
Top coating composition for photoresist and method of forming photoresist pattern using same
Top coating compositions capable of being used in immersion lithography, and methods of forming photoresist patterns using the same, are provided. The top coating composition includes: a polymer, a...
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7348386 |
Process for producing fluorocopolymer, fluorocopolymer, and molded object
The present invention relates to a method for producing a fluorocopolymer which comprises a polymerization reaction of a fluorine-containing ethylenic monomer with a fluorovinyl ether derivative...
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7307113 |
Fluorosulfonic acid organic polymers
The present invention provides for a composition and a process for forming the composition. The composition comprises an organic polymer and 0.5-40% by weight of the composition of a siloxane, the...
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7303858 |
Photoacid generating polymer, its preparation method, top anti-reflective coating composition comprising the same, method of forming a pattern in a semiconductor device, and semiconductor device
Disclosed herein is a photoacid generating polymer represented by Formula 1 below:
wherein R 1 is a C 1-10 hydrocarbon or a C 1-10 hydrocarbon in which the hydrogen atoms are wholly or...
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7285612 |
Partially fluorinated copolymer based on trifluorostyrene and substituted vinyl compound and ionic conductive polymer membrane formed therefrom
A trifluorostyrene and substituted vinyl compound based partially fluorinated copolymer, an ionic conductive polymer membrane including the same, and a fuel cell adopting the ionic conductive...
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7271229 |
Processes for producing a fluorosulfonyl group-containing compound and a compound led from the fluorosulfonyl group-containing compound
A fluorosulfonyl group-containing compound having a high polymerization reactivity, a process for its production, a sulfonyl group-containing polymerizable monomer led from the sulfonyl...
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7271228 |
Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts
Ionic perfluorovinyl compounds and their uses as components of ionic conductors of the polymer type, of selective membranes or of catalysts. The compounds comprise at least one perfluorovinyl group...
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7262252 |
Nonlinear optical materials comprising fluorine-containing polymer
There is provided a fluorine-containing resin composition which is used for nonlinear optical material and comprises (I) a fluorine-containing prepolymer and (II) an organic compound exhibiting a...
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7253241 |
Fluorochemical containing low adhesion backsize
In one aspect, the invention provides a water-based release coating composition comprising a mixture of (A.) from about 5 to about 100 wt % of a polymer comprising the reaction product of (a.) from...
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7238735 |
Process for producing aqueous dispersion of purified polytetrafluoroethylene
A process for producing an aqueous dispersion of purified polytetrafluoroethylene (PTFE), comprising passing a crude aqueous dispersion of PTFE comprising from 10 to 50 mass % of PTFE fine...
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7217742 |
Sulphonic fluorinated ionomers
Sulphonic fluorinated ionomers crosslinked by radical crosslinking of:
A) crosslinkable sulphonic fluorinated ionomers, having equivalent weight 380–1300 g/eq and comprising: from 48% to 85% by...
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7214752 |
Homopolymers which exhibit a high level of photo-inducable birefringence
Homopolymers suitable for storage of information provided optically are disclosed. The are formed from monomers which
contain groupings which are at least trinuclear, which are capable of...
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7199199 |
Perfluorinated polymers
Amorphous perfluorinated homopolymers and copolymers of perfluorodioxoles of formula (IA):
wherein R′ F is equal to R F or OR F wherein R F is a linear or branched perfluoroalkyl radical...
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7169869 |
Polymers, resist compositions and patterning process
A resist composition comprising a polymer containing vinyl sulfonate units having fluorinated hydrophilic groups as a base resin has excellent transparency, substrate adhesion and developer...
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7166685 |
Compositions containing particles of highly fluorinated ion exchange polymer
Solid and liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions...
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7132489 |
Fluorine-containing amphoteric polymer for surface coating and preparation method thereof
The present invention relates to a fluorine-containing amphoteric polymer for surface coating and preparation method thereof, in particular, to a fluorine-containing amphoteric polymer for surface...
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7125642 |
Sulfonates, polymers, resist compositions and patterning process
A sulfonate compound having formula (1) is novel wherein R 1 to R 3 are H, F or C 1-20 alkyl or fluoroalkyl, at least one of R 1 to R 3 contains F. A polymer comprising units derived from the...
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7125641 |
Polymers, resist compositions and patterning process
A polymer comprising recurring units of (1a) or (1b) wherein R 1 is an acid labile group, adhesive group or fluoroalkyl, R 2 is H, F, alkyl or fluoroalkyl, R 3 and R 4 each are a single bond,...
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7101938 |
Method for forming fluorinated ionomers
This invention concerns a method for forming ionomers by treatment with ammonium carbonate of copolymers having a substantially fluorinated, but not perfluorinated, polyethylene backbone having...
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7098282 |
Fluorosulfone-silicone hydrogel, RGP contact lenses, optical medical devices and compositions thereof
Highly comfortable oxygen permeable and hydrophilic contact lenses are manufactured from a copolymer of an ethylenically unsaturated novel monomers Bis(perfluoroalkylsulfonyl)-amidoethyl...
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7094469 |
Porous or non-porous substrate coated with an immobilized polymeric composition having sulfonyl groups and hydrophilic functional groups and process
A porous or non-porous polymeric substrate having its surface modified with an immobilized fluorocarbon such as perfluorocarbon, polymeric composition is provided. The immobilized fluorocarbon is...
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7087694 |
Fluorinated copolymers for hydrophobic and oleophobic treatment of building materials
The invention relates to fluorinated copolymers resulting from the polymerization of a polyfluorinated monomer, a (meth)acrylate amino alcohol, vinyl acetate and a silane monomer in a distillable...
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7078445 |
Photosensitive acrylate composition and waveguide device
A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated...
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7078147 |
Polymers, resist compositions and patterning process
A resist composition comprising a base polymer having sulfone or sulfonate units introduced therein is sensitive to high-energy radiation below 300 nm, is endowed with excellent adherence to...
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7071346 |
Polymers, containing a fluorocyclobutyl ring and their preparation
This invention concerns olefins having a terminally disposed fluorocyclobutyl ring bearing an ionic functionality or a precursor thereto, a process for the production thereof, and polymers formed...
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7071271 |
Aqueous emulsion polymerization of functionalized fluoromonomers
A method is provided for aqueous emulsion co-polymerization of two or more fluoromonomers comprising the steps of: 1) forming an aqueous pre-emulsion by mixing a fluoromonomer according to formula...
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7060416 |
Positive-working, thermally sensitive imageable element
Alkali soluble copolymers, imageable elements useful as lithographic printing plate precursors that contain the alkali soluble copolymers, and methods for forming images using the imageable...
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7053146 |
Compositions containing copolymers based on acryloyldimethyl aminoethylsulfonic acid and synergistic additives
The invention relates to compositions comprising copolymers based on acryloyldimethyltaurine and also synergistic additives selected from anionic, cationic, nonionic, and betaine surfactants. The...
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7049379 |
Alkylated fluorochemical oligomers and use thereof in the treatment of fibrous substrates
This invention provides a method of treating fibrous substrates, such as leather, by contacting the substrate with a fluorochemical compound comprising: a fluorochemical oligomeric portion...
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7019092 |
Fluorinated copolymers for microlithography
Fluorinated copolymers useful in photoresist compositions and associated processes for microlithography are described. These copolymers are comprised of a fluoroalcohol or protected fluoroalcohol...
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