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Matches 651 - 700 out of 8,585

Document Document Title
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...  
WO/1999/055746A1
A fluoroelastomer latex is produced that is capable of forming films having excellent water resistance. In a first step, polymerization of fluorinated monomers is carried out in the presence of fluorinated surfactants at a pH of 3-8. The...  
WO/1999/055745A1
Polyvinyl chloride pastes and plastisols having good foam forming properties and low viscosity are made from resins produced by (co)polymerising vinyl chloride in the presence of an alkyl sulphate or alkyl sulphate mixture having at leas...  
WO/1999/050319A1
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/1999/050923A1
The invention relates to a method for the preparation of a polymer electrolyte electrochemical cell using an electrolyte precursor, said precursor comprising one or more solvents, one or more salts and a polymer which dissolves in the so...  
WO/1999/048937A1
The present invention relates to a method for the production of partially fluorinated fluoropolymers, whereby at least one fluoropolymer is radically polymerized in the presence of polyfluoropropanes or polyfluorobutanes having structure...  
WO/1999/043723A1
A process for producing an aqueous dispersion of polytetrafluoroethylene (PTFE) in which C¿9?F¿19?COONH¿4? or the like is used as a surfactant. The dispersion is coagulated to obtain a fine PTFE powder, which is subjected to paste ext...  
WO/1999/042154A1
The invention relates to improvements in drug delivery devices and particularly those for dispensing a metered dose of medicament. Apparatus (10, 110) is provided for dispensing medicament wherein at least a portion of one or more of the...  
WO/1999/037687A1
A process by which a perhalopolymer having a higher molecular weight can be produced at a higher polymerization rate without adversely influencing the global environment. The process comprises polymerizing a perhalomonomer in a chemicall...  
WO/1999/032523A1
The invention concerns a method for preparing an aqueous dispersion of vinyl polymers halogenated by polymerisation, whereby after polymerisation, a basic agent is added in an amount such that the pH of the aqueous dispersion is approxim...  
WO/1999/032439A1
A process for preparation of a fluorinated sulfinate product by reacting a mixture comprising: (1) water; (2) dehalogenating and sulfinating reagent; and (3) fluoroaliphatic sulfonyl fluoride represented by the formula: R¿f?-[SO¿2?F]¿...  
WO/1999/031194A1
The invention relates to emulsions of organic peroxides comprising organic peroxide, water, antifreeze, optionally nonionic surface-active agent, and optionally protective colloid which have a low viscosity and excellent stability over t...  
WO/1999/016809A1
The invention provides a method for preparing a desired organic compound by reacting one or more reactants in a reaction medium comprising a fluorinated ether compound wherein the fluorinated ether compound comprises at least 3 carbon at...  
WO/1999/005101A1
The invention relates to aqueous emulsions of peroxyesters comprising an anti-freeze agent, a polyvinyl acetate with a degree of hydrolysis between 45 and 68 %, and a non-ionic surfactant with an HLB value greater than 16 selected from a...  
WO/1999/005179A1
A process for producing a fluoropolymer comprising units derived from a fluoroolefin as the main structural units, wherein a hydrofluoroalkyl ether is used as a polymerization medium.  
WO/1999/002572A1
Vinyl chloride resin granules for paste processing which are spherical agglomerates of primary vinyl chloride resin particles and which have an angle of repose of 30 to 38°, a proportion of spherical granules with a diameter not smaller...  
WO/1999/000454A1
A composite article is provided which includes a blend component (12) having first and second surfaces and a subtantially non-fluorinated polymer component adhered to the first surface of the blend component, wherein the substantially no...  
WO/1999/000455A1
This invention provides a method of bonding substantially non-fluorinated polymeric material to a fluoropolymer utilizing a bonding composition comprising primary or secondary di- or poly-amine and a melt-processable, substantantially no...  
WO/1998/047950A1
Nonfilled and filled granular PTFE powders each having a high apparent density, a small quantity of electrostatic charge and excellent powder fluidity, capable of providing moldings freed from deterioration of tensile strength and elonga...  
WO/1998/042759A1
A vinyl chloride resin powder having a K value of 63 to 74, a bulk density D (g/ml) satisfying, in relation with the K value, the formula (I): 8.5$m(F)K?D�$m(F)11, a volume specific resistance of not less than 8 x 10?13� $g(V).cm and...  
WO/1998/039294A1
The invention relates to a novel compound t-butylperoxy-cyclododecyl-oxalate, a method for the production and the use thereof as a polymeriziation initiator.  
WO/1998/038242A1
New and novel copolymers of vinylidene fluoride and hexafluoropropylene containing up to about 24 % by weight hexafluoropropylene having improved solution clarity and fluidity, longer gel times and lower extractables than prior art vinyl...  
WO/1998/034967A1
A process for making a fluoropolymer is disclosed. The process comprises solubilizing a fluoromonomer in solvent comprising a carbon dioxide fluid, and then polymerizing the fluoromonomer to produce a fluoropolymer. A preferred solvent f...  
WO/1998/029460A1
A method and an apparatus for removing residual monomers from a slurry containing polyvinyl chloride while preventing degradation of polyvinyl chloride and the drop of its quality. The apparatus comprises a cylindrical column main body (...  
WO/1998/029505A1
A polymer composition which comprises: (A) a reaction product obtained by reacting (a) a hydroxylated fluoropolymer obtained by the copolymerization of a fluoroolefin, a hydroxylated vinyl monomer, and other unsaturated monomer(s) copoly...  
WO/1998/028351A1
Fluoromonomer is polymerized to obtain a fluoropolymer with the polymerization being carried out in a pressurized polymerization reactor containing a polymerization medium comprising liquid or supercritical CO�2?. The polymerization me...  
WO/1998/024820A1
The invention relates to build-up agents which comprise a condensation product among an aldehyde, a phenol compound and an aromatic carboxylic acid, hydroxy-substituted on the aromatic nucleus. The products are particularly effective in ...  
WO/1998/023649A1
A method for polymerizing vinyl monomers in the aqueous phase. In order to avoid deposits from being formed on the surfaces of the reactor, polymerization occurs in the presence of at least one N-oxyl compound of a secondary amine carryi...  
WO/1998/020055A1
This invention provides a method of preparing fluoropolymer utilizing one or more environmentally-friendly fluorinated emulsifiers comprising $g(a)-branched fluoroalkylcarbonyl moieties. Fluoropolymer emulsions comprising one or more env...  
WO/1998/018835A1
A process to make suspensions of thermally labile organic compounds in water is provided. The suspensions comprise at least one polyvinyl alcohol with an average degree of hydrolysis from 60 to 80 % and at least one non-ionic surfactant ...  
WO/1998/014484A1
A process for the polymerization which comprises polymerizing batchwise at least one gaseous or super-critical fluorinated olefin monomer or a monomer mixture of the olefin monomer with other monomer copolymerizable with the olefin monom...  
WO/1998/012248A1
Stable foam caulk, sealant and insulation compositions are disclosed. The compositions comprise solid, waxy non-ionic lipophilic surfactants having low HLB values. These surfactants, upon foamed dispensing of the composition, provide sta...  

Matches 651 - 700 out of 8,585