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7601878 |
Process and unit for production of perfluoroalkyl iodide telomers
A solid catalyst used in, for example, production of a perfluoroalkyl iodide telomer is effectively and continuously recovered and the recovered catalyst is continuously recycled to the reactor for...
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7157124 |
Polymerizable compounds and their polymers
A compound represented by formula (1) or (2) and a polymer obtained by polymerizing the compound are provided:
wherein R a is one of the groups represented by Formulas (3-1) to (3-5); R b is...
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7015368 |
Purification process of thermoprocessable tetrafluoroethylene copolymers
A purification process of thermoprocessable tetrafluoroethylene (TFE) copolymers comprising the following steps:
A) the polymer latex is transformed into gel form, under mechanical stirring,...
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6861565 |
Process for producing a fluoroalkanol
A process for producing a fluoroalkanol which can easily be industrially practiced with high selectivity, is provided. CHR 1 R 2 OH, a radical initiator and CF 2 ═CFR f are continuously...
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6805920 |
Polymerizable liquid crystal compound and optical film
This invention provides a polymerizable liquid crystal compound having a large value of Δn/n, excellent in coating properties on an alignment film and easily aligned. Disclosed is a polymerizable...
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6710215 |
Method of a simultaneous preparation of hexafluoropropylene and octafluorocyclobutane
A method of simultaneous and selective prepararation of hexafluoropropylene and octafluorocyclebutane comprising the steps of: (a) thermally decomposing difluorochloromethane to obtain...
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6670511 |
Fluorine-containing diene, its production method and its polymer
A fluorine-containing diene represented by the formula 1: CF 2 ═CF(CF 2 ) n CXYOCF═CF 2 Formula 1 wherein each of X and Y which are independent of each other, is an atom selected from a...
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6653515 |
Synthesis of α, β, β-trifluorostyrene via in-situ formation of trifluorovinyl metal halide
α,β,β-Trifluorostyrene and derivatives thereof synthesized in two steps from 1,1,1,2-tetrafluoroethylene. In the first step, 1,1,1,2-tetrafluoroethylene is reacted with a base, a metal salt such...
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6396680 |
Monolithic capacitor and process for producing the capacitor
A monolithic capacitor including a sintered body formed from a TiO 2 -containing reduction-resistant dielectric ceramic material; a plurality of internal electrodes which are formed inside the...
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6365676 |
Poly-perfluoroalkyl substituted polyamines as grease proofing agents for paper and foam stabilizers in aqueous fire-fighting foams
The invention concerns a process for the reaction of a perfluoroalkyl iodide of the formula CF 3 (CF 2 ) h —I, where h is an integer from 4 to 18, with a compound having a terminal olefinic...
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6350925 |
Perhaloethyl aromatic compounds and perhaloethenyl aromatic compounds therefrom
A synthesis is provided for α,β-difluoro-β-halo-ethenyl aromatic compounds such as α,β,β-trifluorostyrenes by a process of reacting CFX 2 CFXI, wherein each X is independently F or Cl,...
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6166156 |
Method for making photocurable halofluorinated acrylates
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...
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5652147 |
Method of measuring concentration of polymerization inhibitor contained in fluorine-containing olefinic monomer and method of polymerizing fluorine-containing olefinic monomer comprising the measurement method
There is provided a precisely quantitative measurement method of a hydrocarbonaceous polymerization inhibitor component in a fluorine-containing olefinic monomer, which inhibitor component is...
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5254774 |
Preparation of hexafluoropropene oligomers
A process for the oligomerization of hexafluoropropene comprises contacting hexafluoropropene with a catalyst or a mixture of catalysts selected from the group consisting of the cyanide, cyanate,...
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5145592 |
Neutral hydrogen-free fluorocarbon cotelomers
A class of neutral, hydrogen-free liquid or waxy perfluorinated cotelomers is described. The cotelomers contain more than 50% weight of fluorine and are derived from chlorotrifluoroethylene and a...
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5001163 |
Organic polymeric material and ion-exchange membrane with pendant carbocyclic exchanging groups produced
An organic polymeric material, which is preferably perfluorinated and which comprises a polymeric chain and at least one group pendant from the chain, in which the group pendant from the chain...
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4668710 |
Trihalovinyl polyol ethers
Included are trihalovinyl polyol ethers. The compositions have pendant 1,2,2-trihaloethenyl moieties. The compositions may be low viscosity oils or highly polymeric such as incorporated with a...
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4296265 |
Process for preparing hexafluoropropene oligomers
Hexafluoropropene oligomers are prepared from hexafluoropropene in a high conversion by contacting gaseous hexafluoropropene with a catalyst comprising an alkali metal fluoride supported on...
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4057591 |
Process for preparing oligomers of tetrafluoroethylene
Oligomers of tetrafluoroethylene are prepared by oligomerization of tetrafluoroethylene in an organic solvent in the presence of a fluoride compound and a crown ether. The catalytic action of the...
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4042638 |
Process for preparing oligomers of hexafluoropropene
Oligomers of hexafluoropropene are prepared by oligomerization of hexafluoropropene in an organic solvent in the presence of a halide compound and a crown ether. The selectivity to the dimer or...
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4039595 |
Copolymers of ethylene and hexafluoropropene
Copolymers of ethylene and hexafluoropropene (HFP) containing between about 15 mol percent and 50 mol percent HFP comprising low to intermediate molecular weight oils of high viscosity. The...
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4016217 |
Preparation of perfluoroolefines
A process for making branched, internally-unsaturated liquid perfluoroolefins that are oligomers of tetrafluoroethylene and have an empirical formula (C 2 F 4 ) n where n is an integer of 4 to 7,...
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3929800 |
Polymer grafting onto hydrocarbon liquids
Monomers are polymerized and simultaneously grafted onto hydrocarbon liquids, so that the resulting hydrocarbon liquids with the polymerized monomers grafted thereto have improved properties as...
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3917724 |
Process for preparing oligomers of hexafluoropropene
Hexafluoropropene is oligomerized in the presence of fluorine-containing tertiary amines having the formula ##EQU1## wherein n represents an integer from 1 to 3, X is hydrogen or CH 3 and R...
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3898293 |
Production of tetrafluoroethylene oligomers
A process for the preparation of oligomers of tetrafluoroethylene by interacting tetrafluoroethylene under anhydrous conditions at 50° to 120°C in the presence of a fluoride ion catalyst in a...
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3679757 |
PREPARATION OF PERFLUOROALKYL IODIDES
Perfluoroalkyl iodides C 2 F 5 (C 2 F 4 ) n I, where n is zero or an integer equal at least to one, are made by heating perhaloalkyl arsines with iodine or with iodine and tetrafluoroethylene...
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3493530 |
PROCESS FOR THE POLYMERIZATION AND COPOLYMERIZATION OF HALOGENATED OLEFINS
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3406210 |
Preparation of halopolyolefins
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3403191 |
Conversion of tetrafluoroethylene to liquid fluorocarbons
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3389187 |
Perfluoroisobutylene dimer
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3244684 |
Process for polymerizing chlorotrifluoroethylene
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3238240 |
Perhaloalkyl chlorosulfates and fluorosulfates
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3223739 |
Polymerization of tetrafluoroethylene and preparation of fluorocarbon waxes
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3214479 |
Process for making dichlorohexa-fluorobutene
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3211637 |
Homopolymers of 4-chloroperfluoro-heptadiene-1, 6
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3198844 |
Cyclic products of para-xylylene
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3083238 |
Fluorinated hydrocarbon polymers and preparation thereof
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2983764 |
Process for the preparation of fluorocarbon compounds
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2972638 |
Process for making fluorinated compounds
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2951096 |
Liquid polymers of polyunsaturated fluoroolefins
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2950300 |
Low temperature method for producing chlorofluoro acid halides
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2917557 |
Production of a tetrachlorotetrafluorobutene
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2883422 |
Method of preparing trifluoromethyliminosulfur difluorides
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2793201 |
Perhaloacrylyl peroxides in fluoroolefin polymerizations
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2788375 |
Oxygen free halopolyfluoro compounds and method of producing same
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2786874 |
Carbon and fluorine-containing polymer
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2784176 |
Polymerization of perhalocarbons with chloropropionyl peroxides
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3702856 |
Title is not available
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3576885 |
Title is not available
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