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| Number | Title | Issue Date |
| 7501540 | Process for producing perfluorodiacyl fluorinated compounds The present invention provides a process for producing compounds useful as raw materials for various fluororesins in high yields in few steps from inexpensive and readily available starting materials. The following compound (1) and the following compound (2) ... | 03/10/2009 |
| 7425646 | Fluorinated adamantane derivative A compound represented by the formula AF(—COF)n, provided that AF and n have the following meanings. AF: a fluorinated adamantane residue which is an n-valent group having an n number of hydrogen atoms removed fro... | 09/16/2008 |
| 7423174 | Method of separating acid The present invention provides a process for selectively separating HF and like acids present along with water-unstable organic acid fluorides. In particular, the invention provides a process for separating an acid from a system in which the acid and an organic acid... | 09/09/2008 |
| 7393961 | Polyhalogenated ethers (Per)haloethers having formula: X-(Rf)L-O—CF2CF2—O—CX1X2—CFX3X4 , (I) process for obtaining them and hypofluorites usable in the synthesis of said (per)hal... | 07/01/2008 |
| 7381420 | Labeling reactant This invention concerns novel labeling reactants suitable for labeling of a biospecific binding reactant using solid-phase synthesis. The novel reactants are derivatives of diethylenetriaminepentaacetic acid (DTPA), wherein a suitable group is linked to the DTPA mol... | 06/03/2008 |
| 7375253 | Process for the preparation of (per)fluorinated mono-functional carbonyl compounds A process for the synthesis of (per)fluorinated mono-functional carbonyl compounds having the following formula (I): F-A-RF—B—C(O)X1 (I) wherein: X1=F, CF3; A, B equal to or... | 05/20/2008 |
| 7371899 | Method for producing carbonyl fluoride To provide a method for producing carbonyl fluoride by employing carbon monoxide and fluorine as starting materials, without such a problem as vigorous heat generation or a decrease in the reaction yield due to a side reaction. ... | 05/13/2008 |
| 7321062 | Process for the preparation of (per) fluorinated mono-functional carbonyl compounds A process for the synthesis of (per)fluorinated mono-functional carbonyl compounds having the following formula: F—A—(RF)t—B—C(O)X1 (I) wherein: X1=F, CF3; t=... | 01/22/2008 |
| 7268261 | Production processes Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245... | 09/11/2007 |
| 7253315 | Process for preparing fluorocarboxylic acids A fluorocarboxylic acid preparation process which includes hydrolyzing fluorocarboxylic acid fluoride in the presence of an aqueous sulfuric acid solution to form a reaction product containing a fluorocarboxylic acid and hydrogen fluoride (present as hydrofluoric ac... | 08/07/2007 |
| 7250539 | Materials and methods for the conversion of hydrofluorocarbons Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245... | 07/31/2007 |
| 7214833 | Process for preparing perfluoropolyethers A process to obtain perfluoropolyethers comprising: a) synthesis of peroxidic perfluoropolyethers by one of the following reactions: al) TFE photooxidation, in solvents selected between perfluorocarbons and (mono)h... | 05/08/2007 |
| 7208638 | Process for preparing fluorohalogenethers A process for preparing (per)fluorohalogenethers having general formula: wherein: A and A′, equal to or different from each other, are selected among Cl, Br and H; m=1, 2; n=0... | 04/24/2007 |
| 7141704 | Process for preparing hydrofluoroethers Process for obtaining hydrofluoroethers of formula (I): A-(Rf)n0—CF(Rf1)—O—Rh (I) wherein a mono- or bifunctional carbonyl compound of formula (IV): B—Rf—C(O)Rf1... | 11/28/2006 |
| 7002040 | Process for purifying fluoroxy compounds This invention relates generally to a improvement in a process for the purification of fluoroxy compounds, such as bis(fluoroxy)difluoromethane and fluoroxytrifluoromethane produced by the fluorination of carbon oxides. The improvement in effecting purification of t... | 02/21/2006 |
| 6998506 | Process for preparing acylfluorides A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula: T=CR1R2 (I) wherein: T is O or CF2 ... | 02/14/2006 |
| 6969776 | Process for producing fluorinated ketone The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow... | 11/29/2005 |
| 6956138 | Method for producing a fluorine-containing compound The present invention provides a method for obtaining a compound useful as a raw material for various fluororesins in high yield by a short process by using a starting material which is inexpensive and readily available. ... | 10/18/2005 |
| 6923921 | Fluorinated polyether compositions Described are fluorinated polyether compounds having a molecular weight range between 750 g/mol and 4000 g/mol where such polyether compounds are intermediates used in fluorinated compositions for treating various substrates. ... | 08/02/2005 |
| 6919480 | Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether. Namely, it provides a process for preparing a fluorinated acyl fluoride (3), which comprises reacting a compound (1) having a fluorine cont... | 07/19/2005 |
| 6919479 | Process for the preparation of perfluoropolyethers acyl-fluoride ended by reduction of the corresponding peroxidic perfluoropolyethers A process for the preparation of perfluoropolyethers of formula: T-CFX′—O—Rf—CFX—COF (I) wherein: T=COF, F, C1-C3 perfluoroalkyl; X, X′=—F, —CF3; ... | 07/19/2005 |
| 6852884 | Process for preparing acylfluorides A process for preparing acylfluorides by reaction of carbonyl fluoride COF2 with compounds having general formula: T=CR1R2 (I) wherein: T is O or CF2 ... | 02/08/2005 |
| 6833477 | Process for producing a vic-dichloro acid fluoride The process for producing a vic-dichloro acid fluoride compound in a short process and in good yield from the starting material which is inexpensive and readily available is provided. (RH1—EH1—)CRH2RH3CH2—... | 12/21/2004 |
| 6803488 | Process for producing fluorinated ketone The present invention provides a process whereby fluorinated ketones of various structures can be produced by short process steps and which is useful as an industrial production process. Namely, it is a process for producing a fluorinated ketone of the follow... | 10/12/2004 |
| 6747174 | Processes for the preparation of fluorinated acyl fluorides and fluorinated vinyl ethers The present invention provides novel processes for preparing a fluorinated acyl fluoride and a fluorinated vinyl ether. Namely, it provides a process for preparing a fluorinated acyl fluoride (3), which comprises reacting a compound (1) having a fluorine cont... | 06/08/2004 |
| 6632949 | Halogenating agents Disclosed are a fluorinating agent represented by the general formula (1): ##STR1## wherein R1 to R4 are a substituted or unsubstituted, saturated or unsaturated alkyl group or a substituted or unsubstituted aryl group, and can be th... | 10/14/2003 |
| 6586626 | Process for producing a fluorine-containing compound by liquid phase fluorination The invention provides a process for producing a fluorine-containing compound from an inexpensive material. Namely, Compound I such as RA CH2 OH is reacted with Compound II such as XCORB to form Compound III such as RA | 07/01/2003 |
| 6489510 | Production of carboxylic acid fluorides A method for producing carboxylic acid fluorides of the formula RCFXC(O)F, where X represents fluorine or chlorine, in good yields and with good selectivity for the carboxylic acid fluorides by reacting compounds of the formula RCFXCHFCl with oxygen by ph... | 12/03/2002 |
| 6458990 | Nitrogen-based halogenating agents and process for preparing halogen-containing compounds Disclosed are a fluorinating agent represented by the general formula (1): ##STR1## wherein R1 to R4 are a substituted or unsubstituted, saturated or unsaturated alkyl group or a substituted or unsubstituted aryl group, and can be th... | 10/01/2002 |
| 6420601 | Process for the preparation of 3,5-bis(trifluoro-methyl)-benzoyl chlorides and novel 3,5-bis(tri-halogenomethyl)-and 3,5-dimethylbenzoyl halides 3,5-Bis(trifluoromethyl)benzoyl chlorides optionally substituted with fluorine or chlorine are advantageously prepared by converting 3,5-dimethylbenzoic acids optionally substituted with fluorine or chlorine into the corresponding acid chlorides; complete... | 07/16/2002 |
| 6329529 | Nitrogen-based halogenating agents and process for preparing halogen-containing compounds Disclosed are a fluorinating agent represented by the general formula (1): ##STR1## wherein R1 to R4 are a substituted or unsubstituted, saturated or unsaturated alkyl group or a substituted or unsubstituted aryl group, and can be th... | 12/11/2001 |
| 6252105 | Synthesis of low-fluoride organic compounds Organic compounds, e.g. fluorinated organic compounds such as fluorinated carboxylic acids or fluorinated carboxylic acid chlorides, may contain small amounts of carboxylic acid fluorides, hydrogen fluoride or hydrolyzable fluoride, which during the prepa... | 06/26/2001 |
| 6114467 | Semifluorinated acid halides and fluorinated polymers produced therefrom Compounds having the formula F(CF2)q --(CH2)p-1 --COX' wherein q ranges from 6-15, p ranges from 3-15 and X' is halogen are useful as reactants for hydroxylated block copolymers or polyamines to produce fluorina... | 09/05/2000 |
| 6110976 | Perfluoro (alkoxycycloalkane) carbonyl fluoride compositions and their use This invention provides perfluoro(alkoxycycloalkane) carbonyl fluoride compounds wherein, pendant from the fluorinated ring, are from 2 to 5 perfluoroalkoxy groups having from 1 to 4, preferably 1 to 2, carbon atoms with the proviso that when one or more ... | 08/29/2000 |
| 6023002 | Process for preparing hydrofluoroethers Described is a reaction of a fluorinated alkoxide with an alkyl fluorovinylalkyl ether, the alkyl fluorovinylalkyl ether having alpha-beta carbon-carbon unsaturation relative to the ether oxygen, to produce a hydrofluoroether.... | 02/08/2000 |
| 5756841 | Process for preparing fluoroxy-or chloroxy-perfluoroacylefluorides Process for preparing fluoroxy- or chloroxy-perfluoroacylfluorides FC(O)--RF --CF2 OX, wherein RF is a perfluoroalkylenic or perfluoropolyoxyalkylenic chain, X is --F or --Cl, by fluorination or chlorofluorination of the c... | 05/26/1998 |
| 5750779 | Preparation process of acyl halide or sulfonyl halide A preparation process of acyl halide or sulfonyl halide which comprises reacting corresponding carboxylic acid or sulfonic acid with a haloiminium salt represented by the general formula (1): ##STR1## wherein R1 and R2 are same ... | 05/12/1998 |
| 5723613 | Process for the free-radical chlorination or bromination of methyl aromatic compounds Methyl aromatic compounds of the formula (I) ##STR1## in which R1, R2 and R3 have the meaning given in the description, can be reacted in an advantageous manner using free-radicals to give the associated trichlorometh... | 03/03/1998 |
| 5710345 | Floorinated polymers and copolymers containing cyclic structures Polymers and copolymers of one or more fluorinated dienes of structure CFX1 .dbd.CX2 --O--CX3 X4 --O--CX2 .dbd.CX1 F, wherein X1 and X2 are F, Cl or H, and X3 an... | 01/20/1998 |
| 5648530 | Manufacture of carbonyl floride Carbonyl fluoride is produced by reacting fluorine-containing compound such as metal fluoride with CO in an excited state, such as produced by a plasma, to obtain a gaseous reaction mixture, which can then be quenched to obtain the COF2.... | 07/15/1997 |
