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Matches 551 - 600 out of 8,487

Document Document Title
WO2002077046A3
The present invention provides a method of making a fluoropolymer through emulsion polymerization of one or more fluorinated monomers in an aqueous phase in the presence of a fluorinated surfactant. At least part of the fluorinated surfa...  
WO/2002/088206A2
Emulsifier free fluoropolymer manufacturing method in which (a) a mixture of an oxidizing agent and reducing agent is used to start the polymerization and where one or the other but not both, are further added during polymerization, or (...  
WO/2002/088207A1
Emulsifier free fluoropolymer manufacturing method in which (a) a chain transfer agent, or a mixture of chain transfer agents are used wherein the chain transfer agents do not yield more than 0.4 weight % relative to the monomer feed of ...  
WO/2002/088203A2
The present invention provides a method of making a fluoropolymer comprising repeating units derived from one or more gaseous fluorinated monomers. The method comprises an aqueous emulsion polymerization of gaseous fluorinated monomers i...  
WO/2002/088248A1
Curable fluoroelastomer compositions having improved compression set after curing are provided, as well as compositions that are of relatively high purity. These compositions include a hydrogen-containing fluoroelastomer having interpoly...  
WO/2002/083744A1
A process for producing a tetrafluoroethylene polymer which comprises polymerizing tetrafluoroethylene in an aqueous medium in the presence of a water-soluble polymerization initiator, wherein the water used in the polymerization has bee...  
WO/2002/083756A1
A composition of (a) a fluoropolymer having interpolymerized units derived from a nitrogen-containing cure site monomer; and (b) a nonfluorinated catalyst composition that includes a compound having the general formula: {RA}?(-)¿{QR'¿k...  
WO/2002/079280A1
Fluororesin particles which have a melting point of 230 to 300°C, cannot be melt-proceeded, and have an average particle diameter of 100 nm or smaller and a melt flow rate, as measured in accordance with ASTM D3307 at 327°C under a loa...  
WO/2002/079279A1
The invention concerns a method for polymerisation in aqueous suspension of vinyl chloride alone or mixed with another vinyl monomer, wherein the initiator comprises at least a compound selected among dialkyl peroxydicarbonates, peroxy-t...  
WO/2002/079324A1
A vinyl chloride-based paste sol composition which is sufficiently thixotropic without the need of containing a large amount of a thixotropic agent or solvent, which poses problems concerning productivity, cost, product quality, burden t...  
WO/2002/077043A1
A process for the preparation of polyvinyl chloride (PVC) with controlled molecular weight and molecular weight distribution is disclosed. The polymerization reaction can be initiated by various organic halide initiators in conjunction w...  
WO/2002/077046A2
The present invention provides a method of making a fluoropolymer through emulsion polymerization of one or more fluorinated monomers in an aqueous phase in the presence of a fluorinated surfactant. At least part of the fluorinated surfa...  
WO/2002/072653A2
An aqueous dispersion of non-melt-processible fluoropolymer, process for making same and concentrated dispersion and powder obtained from the dispersion. The fluoropolymer particles of the dispersion have a standard specific gravity (SSG...  
WO/2002/072646A1
A process for producing a tetrafluoroethylene polymer which comprises polymerizing tetrafluoroethylene having a content of impurities (e.g., saturated compounds such as CH¨2?F¨2? and CHF¨3? and unsaturated compounds such as CF¨2?=CFH...  
WO/2002/066521A1
A fluorochemical composition comprising a major amount of organic solvent and 0.05% by weight to 5% by weight of fluorochemical oligomer dispersed or dissolved in said organic solvent and said fluorochemical oligomer being represented by...  
WO/2002/062854A1
A process for producing a vinyl chloride polymer which comprises polymerizing, in an aqueous medium, a vinyl chloride monomer or a mixture of a vinyl chloride monomer with one or more monomers copolymerizable therewith, wherein an alkali...  
WO/2002/062742A1
Fluorinated carboxylic acid, used as a surfactant in fluoropolymerization in aqueous media, can be recovered by scrubbing from the exhaust gas of the dryer during polymer drying and, after concentration and treatment with alumina, direct...  
WO/2002/060968A1
A method of making a curable fluoroelastomer is disclosed. The method comprises the steps of preemulsifying at least one perfluorovinylether in water, and copolymerizing the preemulsified perfluorovinylether with a gaseous fluorinated mo...  
WO2002050140A3
The invention concerns a method for preparing latex by batch free radical polymerisation of one or several monomers, which consists in polymerising: (a) one or several fine dispersions of one or several finely dispersed monomers and (b) ...  
WO/2002/055567A2
The invention concerns a method for continuous preparation of halogenated polymers comprising free radical polymerisation of halogenated monomers in a medium comprising liquid or supercritical carbon dioxide, in at least two pressurised ...  
WO2002028925A3
A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a hydrocarbon sulfonate anionic surfactant of the formula CH3-(CH2)n-SO3M, CH3-(CH2)n-C6H4-SO3M, or CH3-(CH2)n-CH=CHCH2-SO3M, where n is ...  
WO2001092356A3
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/2002/050140A2
The invention concerns a method for preparing latex by batch free radical polymerisation of one or several monomers, which consists in polymerising: (a) one or several fine dispersions of one or several finely dispersed monomers and (b) ...  
WO2002044226A8
Use of non-water-soluble organic fluorinated compounds, which are gaseous under the polymerization conditions and act as chain transfer agent in the gas phase, as explosion suppressors in the emulsion polymerization of tetrafluoroethylene.  
WO2001090206A3
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/2002/048201A2
The present invention provides fluoropolymer powders having a diameter of from about 0.05 to about 200 microns, said powders having pendant hydrophilic groups and olefinic unsaturation. The powders are useful in applications which requir...  
WO/2002/044226A1
Use of non-water-soluble organic fluorinated compounds, which are gaseous under the polymerization conditions and act as chain transfer agent in the gas phase, as explosion suppressors in the emulsion polymerization of tetrafluoroethylene.  
WO/2002/038632A1
The present invention pertains to a process for controlled free radical polymerization or copolymerization of vinyl chloride at a temperature between 40 °C and 95 °C, at a pressure between 5 and 30 bar in the presence of a stable free ...  
WO2002006355A3
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/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.  

Matches 551 - 600 out of 8,487