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JP5010101B2 |
A process to substantially remove the fluorinated anionic surfactants comprising the following steps: a) addition to a fluoropolymer dispersion of a nonionic surfactant, in an amount in the range 1.5%-25% by weight, referred to the fluor...
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JP5010115B2 |
Fluoroelastomeric gel having the following properties: appearance: transparent gelatinous solid; water content between 10% and 90% by weight; density between 1.1 and 2.1 g/cm<3>; said gel satisfies the following test: dried in a stove at...
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JP5015413B2 |
Provided herein is a process of fractionating ferroelectric, preferably vinylidene fluoride polymers using a solvent having at least one polarizable functional group, and a precipitant. The composition of the fractionated ferroelectric p...
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JP5014704B2 |
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 monomer and at least one step involving cross-f...
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JP5008850B2 |
A tetrafluoroethylene resin molded article obtained by fusing PTFE by heating a tetrafluoroethylene resin by heating, and then executing a gradual cooling or a cooling including a holding at a temperature equal to or higher than 313°C a...
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JP2012153858A |
To provide a method for producing a vinyl chloride polymer without discoloration and with high thermal stability by reducing abnormal structure, the cause of the deterioration in thermal stability.The method for producing a vinyl chlorid...
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JP5003692B2 |
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JP4997707B2 |
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JP4996813B2 |
Amorphous perfluorinated homopolymers and copolymers of perfluorodioxoles of formula (IA): wherein R'F is equal to RF or ORF wherein RF is a linear or branched perfluoroalkyl radical having 1-5 carbon atoms; X1 and X2, equal to or differ...
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JP4993268B2 |
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JP4996784B2 |
Porous membranes of (per)fluorinated amorphous polymers having a porosity in the range 5-500 nm, preferably 20-100 nm, measured by an atomic force electronic microscope; the membrane pore average size ditribution being narrow, about 80%-...
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JP4996782B2 |
Use of vinylidenfluoride (VDF) copolymers for preparing electrolyte polymers, wherein the VDF copolymers have the following polymeric structure (I): (CH2-CF2)m-(CXY-C(ORf)Z)n-(CF2-CF(CF3))p) wherein: Rf is a perfluoroalkyl group having f...
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JP4996806B2 |
Amorphous (per)fluorinated polymers containing an amount lower than 0.05 mmoles/kg polymer of each of the following ionic end groups: COF, COOH, their amidic derivatives, esters or salts, when the used determination method for said end g...
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JP2012144740A |
To provide a method of 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 application of ultraviolet radiation to a high...
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JP4989860B2 |
Perfluoroelastomeric gel having the following properties: appearance: transparent gelatinous solid; water content between 10% and 90% by weight; density between 1.1 and 2.1 g/cm 3 ; said gel satisfies the following test: dried in a stove...
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JP2012140634A |
To provide a sulfonic acid functionalized polymer that is useful in manufacturing of a polymer film of an electrolytic cell, such as a fuel cell.A method is provided for aqueous emulsion copolymerization of two or more fluoromonomers inc...
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JP2012136640A |
To provide a method for production of a composition for a fluorine-containing powder coating material, in which the resin powders do not bind each other even when using the thermoplastic resin powder including a fluorine-containing copol...
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JP4980382B2 |
The invention relates to improvements in drug delivery devices and particularly those for dispensing a metered dose of medicament. Apparatus (10,100) is provides for dispensing medicament wherein at least a portion of one or more of the ...
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JP4980908B2 |
Polyhydroxy curable fluoroelastomers that are substantially free of nucleophilic endgroups are grafted with a monophenol having at least one pendant group. The resulting grafted fluoroelastomers retain most of the properties of the origi...
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JP4970943B2 |
The present invention provides a method of preparing a composite article comprising: providing a first substrate having a surface comprising fluoropolymer; contacting the surface of the first substrate with a modifying composition prepar...
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JP2012122033A |
To provide a production method which is also applicable to a suspension polymerization process and by which polymerization proceeds in a living manner to control a molecular weight and a vinyl chloride polymer having a narrow molecular w...
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JP4963810B2 |
Lubricant (I), for sport devices, in particular winter sports devices, comprises at least a polychlorotrifluoroethylene (PCTFE) (a). Independent claims are also included for: (1) a composition for improving the sliding qualities of sport...
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JP4962324B2 |
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JP4956856B2 |
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JP4956868B2 |
A method for producing a tetrafluoroethylene/perfluoro (alkyl vinyl ether) type copolymer (PFA), which comprises carrying out the polymerization in a polymerization medium (such as CHFClCF2CF2Cl) in the presence of a chain transfer agent...
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JP4955845B2 |
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JP2012513531A |
A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and fluorosurfactant having the formula (I) RfCH2OCF(CF3)C(O)OM (I) wherein Rf is a linear or branched perfluoroalkyl group...
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JP4951822B2 |
To improve thermal stability of a battery. This electrolyte and/or this electrolyte surface coat formation agent contains at least one kind of compound having, in a molecule, one or more partial structures expressed by chemical formula (...
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JP4951970B2 |
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JP4945079B2 |
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JP4943321B2 |
The present invention relates to the reduction of oligomer content of melt-processible fluoropolymer so that the fluoropolymer has at least 25 ppm less oligomer than the as-polymerized fluoropolymer, the reduction being obtained by melti...
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JP4938457B2 |
Polymer electrolyte membranes such as are used in fuel cells are provided along with methods of their manufacture. The polymer electrolyte membranes comprise polymers or blends of polymers having an equivalent weight of less than 1200 an...
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JP4928267B2 |
The invention relates to the field of chemistry and relates to radically coupled PTFE polymer compounds that can be used, for example, as tribo materials, and a method for the production thereof. The object of the invention is to disclos...
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JP4926065B2 |
Fluorinated polymer (I), comprising repetitive units of formula (-CXY1-CZ(CH 2-O-Ar1-Q-G)-), is new. Fluorinated polymer (I), comprising repetitive units of formula (-CXY1-CZ(CH 2-O-Ar1-Q-G)-), is new. X, Y : H or F; Z : F or perfluoroal...
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JP2012082438A |
To provide composition which can give a molding having high heat resistance, high mechanical strength, and high transparency.This particle is a fluororesin particle where melting point is 230-300°C, average particle diameter at which me...
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JP4924420B2 |
The present invention provides the process for preparing a fluorine-containing polymer which can easily and efficiently separate a fluorine-containing polymer and water from an aqueous dispersion of a fluorine-containing polymer, and the...
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JP4922523B2 |
Process and installation for extracting a monomer from an aqueous broth of a polymer, in which, after the broth has been heated, the broth is subjected to a depressurization in a depressurization chamber and is then introduced into a ver...
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JP4922486B2 |
The invention pertains to a process wherein peroxides are dosed to a polymerization mixture, with essentially all of the organic peroxide that is used in the polymerization process having a half-life from 0.05 hour to 1.0 hour at the pol...
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JP4916668B2 |
To provide a stabilized fluorinated sulfonic acid polymer having sufficient durability in a severe environment such as high temperature and strong oxidizing atmosphere. The invention relates to the highly stable fluorinated sulfonic acid...
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JP2012508745A |
A compound of Formula (1) Rf—O—(CXX′)m—(CY2)nSO3M (1) wherein Rf is a C1 to C4 linear or branched perfluoroalkyl group, X and X′ are each independently H or F, provided that at least one of X or X′ is F, each Y is indepe...
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JP2012508296A |
A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, wherein said polymerization agent is a com...
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JP4906983B2 |
A composite article is provided which includes a blend component having first and second surfaces and a substantially non-fluorinated polymer component adhered to the first surface of the blend component, wherein the substantially non-fl...
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JP4901130B2 |
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JP4899522B2 |
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JP2012052134A |
To improve the current situations including inadequate control of a thermal peak of polymerization reaction, the use related to a reactor which cannot be said to be optimum, quite low efficiency of initiator, a high peroxide level remain...
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JP4896709B2 |
The invention pertains to a process to polymerize one or more monomers wherein at most 90% w/w of a safely useable amount of a first initiator is used and a second initiator is dosed at least after the start of the polymerization, in an ...
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JP4889837B2 |
The dialkyl peroxydicarbonates with short alkyl chains, preferably diethyl and diisopropyl peroxydicarbonates, are used for the aqueous suspension polymerization of vinyl chloride, in the form of a solution in a dialkyl alkanedicarboxyla...
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JP4886519B2 |
The instant invention relates to a composition and process for the stabilization of halogen containing polymer slurries, in particular polyvinylchloride (PVC). The composition comprises a halogen containing polymer in the form of an aque...
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JP4886256B2 |
To provide a graded-index optical fiber made of an amorphous fluorine-containing polymer having no C-H bond, in which initial transmission loss is suppressed and increase in the loss upon bending is suppressed, and which has improved hea...
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JP4885741B2 |
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