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Matches 601 - 650 out of 8,550

Document Document Title
WO/2002/028925A2
A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a hydrocarbon sulfonate anionic surfactant of the formula CH¿3?-(CH¿2?)¿n?-SO¿3?M, CH¿3?-(CH¿2?)¿n?-C¿6?H¿4?-SO¿3?M, or CH¿3?-...  
WO/2002/024770A1
A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a partially fluorinated anionic surfactant of the formula F-(CF¿2?CF¿2?)¿n?-CH¿2?CH¿2?SO¿3?M, where n is an integer from 2 to 9, or...  
WO2001049752A3
Emulsion polymerization of liquid fluorinated monomers which have a boiling point above 50 DEG C and low water-solubility is markedly more efficient if the monomer is pre-emulsified with a nontelogenic fluorinated emulsifier in water.  
WO/2002/013953A1
A method of more efficiently recovering a fluorochemical surfactant from an aqueous solution containing the surfactant. The method of recovering a fluorochemical surfactant comprises subjecting an aqueous solution containing the surfacta...  
WO/2002/012392A1
A tetrafluoroethylene based resin molding material excellent in high frequency electric characteristics which provides a formed product having a relative dielectric constant of 2.2 or less and a dielectric loss tangent of 1.60 x 10?-4¿ ...  
WO/2002/006355A2
To introduce polar group by a simple and easy method without spoiling solvent-resistance and mechanical/thermal properties which fluorine type resin inherently possess to provide a fluorine type resin composition improved in adhesion. To...  
WO/2001/096946A2
Blocked photographically useful groups decompose thermally via a Lossen rearrangement reaction, including, for example, compounds represented by the following structure: F. In the above structure, the substituents are as defined in the a...  
WO/2001/092356A2
A tetrafluoroethylene (TFE)/perfluoro (alkyl vinyl ether) (PVE) copolymer and a method for producing the copolymer, wherein the molar ratio of polymerized units based on TFE/polymerized units based on PVE is in the range of from 98.1/1.9...  
WO/2001/090206A2
A method for forming a fluoropolymer comprises providing a reaction mixture comprising carbon dioxide, at least one fluoromonomer, and an initiator; and reacting the at least one fluoromonomer in the reaction mixture to form a fluoropoly...  
WO/2001/078171A1
Use of a conventional binder containing a surfactant has been undesirable in that the surfactant remains in the resultant electrode coating film and the residual surfactant leads to an increase in internal resistance, deterioration of cy...  
WO/2001/068154A1
An air freshener dispenser is taught having plug-through capability as well as a night light. The dispenser is a plug-in diffuser for such active materials as fragrances and air fresheners, and eliminates the consumer problem of loss of ...  
WO/2001/064308A1
The invention concerns a method and an installation for extracting a monomer from an aqueous polymer slurry which consists in: after heating the slurry, causing it to expand in an expansion chamber, then introducing it into a vertical co...  
WO/2001/060869A1
Fluoroelastomers having copolymerized units of vinylidene fluoride major monomer, at least one other fluorinated major monomer, and at least one cure site monomer are prepared in an aqueous suspension polymerization process using an init...  
WO/2001/060911A1
Melt-processible, thermoplastic poly(tetrafluoroethylene) (PTFE) compositions are disclosed and methods for making and processing same. Additionally, products comprising these compositions are described.  
WO/2001/058577A1
A crosslinked fluorocarbon such as perfluorocarbon, polymeric composition is provided having hydrophilic functional groups, which is crosslinked with fluorinated such as perfluorinated crosslinking groups. Also provided is a branched flu...  
WO/2001/057095A1
Linear copolymers of fluorocarbon and hydrocarbon monomers. The present invention provides linear copolymers and terpolymers of fluorocarbon and hydrocarbon monomers, and particularly the invention provides a linear copolymers, of fluoro...  
WO/2001/057100A1
High purity fluoropolymers are obtained by the emulsion polymerization process, removing essentially all ions and coagulating the polymer essentially without adding ions. These polymers are useful in the field of electronic devices.  
WO/2001/049752A2
Emulsion polymerization of liquid fluorinated monomers which have a boiling point above 50° C and low water-solubility is markedly more efficient if the monomer is pre-emulsified with a nontelogenic fluorinated emulsifier in water.  
WO/2001/049757A1
The invention concerns the synthesis of novel fluorinated elastomers having very low glass transition temperatures (T¿g?), good resistance to bases, oil and fuels and suitable properties in use. Said elastomers contain, for example, 80 ...  
WO2000071590A8
Aqueous dispersion polymerization of fluoromonomers is improved by using a combination of fluorosurfactants, one of which is a perfluoropolyether carboxylic acid or salt.  
WO/2001/046275A1
This invention concerns a process for the use of hydrogen halides as chain transfer agents in fluoroolefin polymerization.  
WO/2001/038406A1
Disclosed is a method of eliminating the odour from a malodourous gas, where the odour is due to the presence of a C¿10? to C¿18? fatty acid in the gas. An aqueous solution containing at least a stoichiometric amount of a base that rea...  
WO/2001/037044A1
Disclosed are partially fluorinated and fully fluorinated polymers that are substantially transparent to ultraviolet radiation at wavelengths from 140 to 186 nanometers.  
WO/2001/037043A1
Disclosed are partially fluorinated and fully fluorinated polymers that are substantially transparent to ultraviolet radiation at wavelengths from 187 to 260 nanometers.  
WO/2001/034667A1
A method for carrying out the continuous polymerization of a monomer in a carbon dioxide reaction medium comprises the steps of: (a) providing an apparatus including a continuous reaction vessel and a separator; (b) carrying out a polyme...  
WO/2001/034666A1
A vulcanizable fluoroelastomer composition from which a vulcanizate reduced in compression set can be produced in a short time and which is excellent in molding stability and suitability for kneading. It comprises a fluoroelastomer havin...  
WO/2001/027167A1
A crosslinked fluorocarbon such as perfluorocarbon, polymeric composition is provided having hydrophilic functional groups, which is crosslinked with fluorinated such as perfluorinated crosslinking groups. Also provided is a branched flu...  
WO/2001/016100A1
Diacyl peroxides having the structure (I): R¿1? CXX'(CYY')¿e?CF¿2?(C=O)OO(C=O)CF¿2?CWW'(CZZ')¿e?R¿f?, wherein e and e' are independently 0 or 1; and when e=0, at least one of X, X' is H and any of the other X, X' is H or F; when e'...  
WO/2001/012682A1
A molding powder of a modified polytetrafluoroethylene resin containing 0.01 to 1 wt.% perfluorovinyl ether units, characterized in that (a) the amount of perfluorovinyl ether monomer remaining in the resin is up to 50 ppb, (b) the conte...  
WO/2001/005881A1
A polymer having a structure represented by general formula: (I) (wherein X, Y, and Z each is hydrogen, fluorine, chlorine, bromine, or iodine, provided that at least one of X, Y, and Z is fluorine; R is linear or branched fluoroalkylene...  
WO/2001/006587A1
A solid polymer electrolyte type fuel cell having, as an electrolyte, a cation exchange film comprising a perfluorocarbon polymer having a sulfonic acid groupe, characterized in that the cation exchange film has been subjected to a stret...  
WO/2000/073360A1
The invention relates to a rapidly cross-linking liquid fluoropolymer that contains as the essential components tetrafluoroethylene and at least one compound from the group consisting of diiodomethane, 1,2-diiodo-1,1-difluoroethane, 1-io...  
WO/2000/071590A1
Aqueous dispersion polymerization of fluoromonomers is improved by using a combination of fluorosurfactants, one of which is a perfluoropolyether carboxylic acid or salt.  
WO1999050319A9
A method of producing a fluoroelastomer reduced in the content of metallic ingredients; and a molded article comprising a fluoroelastomer sufficiently reduced in the content of metallic ingredients. The method comprises producing a fluor...  
WO/2000/047641A1
A process for producing a fluoropolymer which comprises polymerizing one or more radical-polymerizable monomers comprising at least one fluoroolefin monomer in the presence of a free-radical polymerization initiator and optionally of an ...  
WO/2000/042078A1
The invention relates to aqueous peroxide emulsions, optionally containing anti-freeze and/or further additives, which contain a specific emulsifier system comprising a copolymer of an $g(a),$g(b)-unsaturated dicarboxylic acid and a C¿8...  
WO/2000/035971A1
Emulsifiers containing fluorine can be separated out of fluoropolymer solutions by adding a non-ionic emulsifier to the dispersion, by separating the emulsifier which contains fluorine by bringing the same into contact with an anion exch...  
WO/2000/032655A1
Chain transfer agents that are chlorine-free and liquid under polymerization conditions, useful for fluoromonomer polymerization, have the following formula: R?1¿-O-R?2¿. They are superior to common chain transfer agents such as chloro...  
WO/2000/031156A1
A method of preparing vinyl chloride resin is provided. In the method, a first vinyl chloride monomer is mixed with a first initiator to prepare a seed polymer particle and a second vinyl chloride monomer and a second initiator are added...  
WO/2000/029450A1
Disclosed is a method of inhibiting the formation of scale on reactor surfaces in contact with a polymerizing vinyl monomer. The reactor surfaces are contacted with a composition that contains, as a scale reducing agent, an acidic hydraz...  
WO/2000/027782A1
Halofluorinated alkylene monomers are made by a method comprising the steps of: (a) subjecting a first polymer which is the reaction product of a fluorinated vinyl monomer and a vinyl comonomer to dehydrohalogenation to form a second pol...  
WO/2000/026260A1
A method by which unstable groups of a melt-processable fluoropolymer can be stabilized rapidly and efficiently. The resultant stabilized polymer through melt molding gives a molded article free from not only air inclusions or voids but ...  
WO/2000/024528A1
The present invention relates to in situ polymerization of fluoropolymer into porous substrates, to improve resistance to wear, tear and creep, decay, and degradation by wetting, staining and warping, and to improve durability while main...  
WO/2000/022002A1
At least one fluoromonomer which is gaseous at ordinary temperature and pressure is stably and efficiently emulsion-polymerized in an emulsion obtained by forcibly emulsifying a water-insoluble liquid with high shearing in the presence o...  
WO/2000/018811A1
The invention relates to a method for producing a fast crosslinkable fluororubber having exclusively hydrogen, alkyl and/or or alkoxy groups in addition to vinylic end groups. The invention also relates to the mixtures of fluororubber ob...  
WO/2000/017245A1
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...  
WO/2000/017712A1
Photoresists and associated processes for microlithography in the extreme, far, and near UV are disclosed. The photoresists in some embodiments comprise (a) a fluorine-containing copolymer comprising a repeat unit derived from at least o...  
WO/2000/004080A1
Disclosed are microporous, open-celled polymeric foams formed by polymerizing a high internal phase water-in-oil emulsion comprising a continuous oil phase and discontinuous water phase where the foam has a Limiting Oxygen Index (LOI) va...  
WO/2000/001741A1
A process for fluoropolymer production which is effective in improving the productivity of the emulsion polymerization method while maintaining the excellent material properties of the fluoropolymer, which comprises: (a) a first polymeri...  
WO/1999/065954A1
A molding material comprising a fluorocopolymer and having a metal elution index $g(h), which is the total number of nanograms of Na, Mg, Cu, Cr, Ni, K, Ca, and Fe metals per gram of the molding material determined by elution analysis wi...  

Matches 601 - 650 out of 8,550