Patents by Inventor Simonetta Fontana
Simonetta Fontana has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7288682Abstract: A process for separating bifunctional perfluoropolyethers (PFPEs) having two terminations —CH2OH from their mixtures with monofunctional PFPEs with one termination —CH2OH, of general formula X1—O—Rf—Y ??(I) wherein Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight of 500-10,000; X1 and Y are end groups selected from —CFXCH2OH (wherein X is F or CF3), —CF3, —CF2Cl, —CF2CF2Cl, —C3F6Cl, —CF2Br, —CF2CF3, wherein at least one of the two end groups is —CFXCH2OH, said process comprising the steps of: a) addition of the PFPE mixture to an adsorbing solid phase, under stirring; b) filtration of the mixture obtained in a): c) addition to the solid phase filtered in b), of a PFPE mixture having an average functionality higher than that of the PFPE mixture of the liquid filtered in b); c2) filtration of the mixture obtained in c); and subsequent treatment of the solid phase separated in c2) with a polar solvent obtaining a liquid containing the PFPE having high functionality.Type: GrantFiled: July 8, 2005Date of Patent: October 30, 2007Assignee: Solvay Solexis S.p.A.Inventors: Alexandre Tchistiakov, Simonetta Fontana, Claudio Tonelli
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Publication number: 20060009660Abstract: A process for separating bifunctional perfluoropolyethers (PFPEs) having two terminations —CH2OH from their mixtures with monofunctional PFPEs with one termination —CH2OH, of general formula X1—O—Rf—Y??(I) wherein Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight of 500-10,000; X1 and Y are end groups selected from —CFXCH2OH (wherein X is F or CF3), —CF3, —CF2Cl, —CF2CF2Cl, —C3F6Cl, —CF2Br, —CF2CF3, wherein at least one of the two end groups is —CFXCH2OH, said process comprising the steps of: a) addition of the PFPE mixture to an adsorbing solid phase, under stirring; b) filtration of the mixture obtained in a): c) addition to the solid phase filtered in b), of a PFPE mixture having an average functionality higher than that of the PFPE mixture of the liquid filtered in b); c2) filtration of the mixture obtained in c); and subsequent treatment of the solid phase separated in c2) with a polar solvent obtaining a liquid containing the PFPE having high functionality.Type: ApplicationFiled: July 8, 2005Publication date: January 12, 2006Inventors: Alexandre Tchistiakov, Simonetta Fontana, Claudio Tonelli
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Patent number: 6821454Abstract: Method for removing water from surfaces of various materials, comprising the steps of covering said surface with a composition having specific weight higher than that of water and subsequently removing water from the composition by skimming, wherein a composition essentially consisting of the following components is used: a fluorinated non ionic additive component A) of formula: T-ORf(CFY)-L (I) a (per)fluoropolyether component B), wherein the ratio by weight (K) between the (per)fluorinated part and the hydrogenated L part of the additive is in the range 1.50-4.00 and the ratio KI between the number average molecular weight of the fluoropolyether part T-ORf— of the additive and the number average molecular weight of the component B) is higher than 1.60.Type: GrantFiled: November 29, 2001Date of Patent: November 23, 2004Assignee: Ausimont S.p.A.Inventors: Mario Visca, Simonetta Fontana
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Publication number: 20020066205Abstract: Method for removing water from surfaces of various materials, comprising the steps of covering said surface with a composition having specific weight higher than that of water and subsequently removing water from the composition by skimming, wherein a composition essentially consisting of the following components is used:Type: ApplicationFiled: November 29, 2001Publication date: June 6, 2002Applicant: Ausimont S.p.A.Inventors: Mario Visca, Simonetta Fontana
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Patent number: 6262006Abstract: Compositions utilized to remove traces of organic solvents and/or oils from the surfaces of components comprising: i) perfluoropolyethers; ii) fluorinated additive having a structure selected from the following: T—ORf(CFY)—L (I) L—CF2ORfCF2—L (II)65 with L=X—CH2CH2(OCH2CH2)nB wherein X=CH2O, CH2NR″, CONR″, CH2OCH2CH2NR″, CH2OCOCH2O; B=OH, SH, NHR″, OCH3, OCOCH3; with R″=H, alkyl C1-3; Y=CF3 or F; T is selected among —CF3, —C2F5, —C3F7, ClCF2CF(CF3)—, CF3CFClCF2—, ClCF2CF2—, ClCF2—; Rf is a perfluoropolyether chain.Type: GrantFiled: February 18, 1998Date of Patent: July 17, 2001Assignee: Ausimont S.p.A.Inventors: Rossella Silvani, Simonetta Fontana
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Patent number: 6221434Abstract: A surface treatment method for imparting -oil- and/or water-repellency, comprising the step of applying to the surface to be treated compositions comprising at least one compound having the formula III ACF2O—(CF2O)n(C2F4O)m—CF2—B III where n=1-20, m=1-20 and A and B are reactive functional groups chosen independently from the group constituted by: a) CONHR, where R=CnH2n+1 with n=1-30, b) CH2OH, c) CONH(X)SiR1n(OR′)3−n, where n=0-2, R1 and R′, identical or different, are CrH2r+1 alkyl radicals, where r=1-4, and X is a bifunctional alkyl spacer of the (CHR″)m type, where m=1-20, and R″ can be H or CH3, optionally containing heteroatoms, d) —[CH2O(R′″O)p]k—P(O)(OH)3−k, where R′″ is an alkylene radical, for example C2H4 or C3H6, p=1-10 and k=1, 2, the composition comprising the compound at a suitable concentration and being aType: GrantFiled: November 29, 1999Date of Patent: April 24, 2001Assignee: Ausimont S.p.A.Inventors: Mario Visca, Silvana Modena, Simonetta Fontana, Giovanni Gavazzi
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Patent number: 6096240Abstract: Method for the water removal from a surface, which comprises covering the surface with a composition having specific weight higher than that of the water, and subsequently removing water from the composition by skimming, such composition comprising a (per)fluoropolyether having molecular weight comprised between 300 and 1500 and a non ionic additive having a (perfluoropolyethereal structure similar to that of the solvent, linked to an hydrogenated part of hydrophilic type, the molecular weight of the (per)fluorinated part is comprised between 400 and 1200 and the ratio by weight between (per)fluorinated part and hydrogenated part is comprised between 1.5 and 3.5.Type: GrantFiled: May 27, 1999Date of Patent: August 1, 2000Assignee: Ausimont S.p.A.Inventors: Ezio Strepparola, Simonetta Fontana, Rossella Silvani
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Patent number: 6083424Abstract: Compositions used to remove traces of water and/or organic solvents and/or oils from the component surfaces, comprising:i) hydrofluoropolyethers having the general formula:HF.sub.2 CO (CF.sub.2 O).sub.n (CF.sub.2 CF.sub.2 O).sub.m CF.sub.2 Hii) fluorinated additive having a structure selected from the following:T--OR.sub.f (CFY)--L (I)L--CF.sub.2 OR.sub.f CF.sub.2 --L (II)with L.dbd.X--CH.sub.2 CH.sub.2 (OCH.sub.2 CH.sub.2).sub.n.spsb.o Bwherein X.dbd.CH.sub.2 O, CH.sub.2 NR", CONR", CH.sub.2 OCH.sub.2 CH.sub.2 NR", CH.sub.2 OCOCH.sub.2 O;n.sup.o =0-50; B.dbd.NHC(CH.sub.2 OH).sub.3, CH.sub.2 O(CH.sub.2 OH).sub.3 ;with R".dbd.H, alkyl C.sub.1-3 ; Y.dbd.CF.sub.3 or F; T is selected from --CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7, ClCF.sub.2 CF(CF.sub.3)--, CF.sub.3 CFClCF.sub.2 --, ClCF.sub.2 CF.sub.2 --, ClCF.sub.2 --; R.sub.f is a (per)fluoroalkane and/or (per)fluoro-polyether chain.Type: GrantFiled: March 24, 1998Date of Patent: July 4, 2000Assignee: Ausimont S.p.A.Inventors: Simonetta Fontana, Rossella Silvani
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Patent number: 5980642Abstract: Method for the water removal from a surface, which comprises covering the surface with a composition having specific weight higher than that of the water, and subsequently removing water from the composition by skimming, such composition comprising a (per)fluoropolyether having molecular weight comprised between 300 and 1500 and a non ionic additive having a (per-fluoropolyethereal structure similar to that of the solvent, linked to an hydrogenated part of hydrophilic type, the molecular weight of the (per)fluorinated part is comprised between 400 and 1200 and the ratio by weight between (per)fluorinated part and hydrogenated part is comprised between 1.5 and 3.5.Type: GrantFiled: August 22, 1997Date of Patent: November 9, 1999Assignee: Ausimont S.P.A.Inventors: Ezio Strepparola, Simonetta Fontana, Rossella Silvani
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Patent number: 5399779Abstract: Perfluoro-2-methyl-4-methoxypentane is prepared with high selectivity by reacting perfluoro-4-methyl-2-pentene with CF.sub.3 OF at a temperature ranging from -40.degree. to +50.degree.. The reaction is preferably carried out by continuously bubbling a gaseous CF.sub.3 OF flow into a liquid phase consisting of the abovesaid pentene optionally dissolved in a solvent.Type: GrantFiled: September 15, 1993Date of Patent: March 21, 1995Assignee: Ausimont S.p.A.Inventors: Vito Tortelli, Claudio Tonelli, Walter Navarrini, Simonetta Fontana
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Patent number: 5296617Abstract: A process for preparing 1,3-dioxoles of formula: ##STR1## in which X.sub.1 and X.sub.3, like or different from each other, are F or H, X.sub.5 and X.sub.6, like or different from each other, are F or CF.sub.3, by dehalogenation reaction of the corresponding 4,5-dihalodioxolanes in the presence of a dehalogenation agent at a temperature ranging from +30.degree. to +130.degree. C.The starting dioxolanes are essentially in the isomeric form anti.Type: GrantFiled: February 5, 1992Date of Patent: March 22, 1994Assignee: Ausimont S.p.A.Inventors: Walter Navarrini, Simonetta Fontana
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Patent number: 5235074Abstract: This invention process for preparing 1,3-dioxolanes of formula: ##STR1## wherein; X.sub.1, X.sub.2, X.sub.3 and X.sub.4, like or different from one another, represent F, Cl, Br, I, CF.sub.2 OSO.sub.2 F, SO.sub.2 F, C(O)F, H, perhaloalkyl or oxyperhaloalkyl radicals containing from 1 to 5 carbon atoms,X.sub.5 and X.sub.6, like or different from each other, represent F or CF.sub.3. Said process is characterized in that a bis(fluoroxy)perfluoroalkane is reacted, at a temperature ranging from -140.degree. C. to +60.degree. C., with a halogenated olefin.This invention also relates to new 1,3-dioxolanes of formula (I) belonging to the class defined hereinbefore.Type: GrantFiled: March 6, 1992Date of Patent: August 10, 1993Assignee: Ausimont S.p.A.Inventors: Walter Navarrini, Simonetta Fontana, Vittorio Montanari
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Patent number: 5225576Abstract: This invention relates to a process for preparing 1,3-dioxolanes of formula: ##STR1## wherein; X.sub.1, X.sub.2, X.sub.3 and X.sub.4, like or different from one another, represent F, Cl, Br, I, CF.sub.2 OSO.sub.2 F, SO.sub.2 F, C(O)F, H, perhaloalkyl or oxyperhaloalkyl radicals containing from 1 to 5 carbon atoms,X.sub.5 and X.sub.6, like or different from each other, represent F or CF.sub.3. Said process is characterized in that a bis(fluoroxy)perfluoroalkane is reacted, at a temperature ranging from -140.degree. C. to +60.degree. C., with a halogenated olefin.This invention also relates to new 1,3-dioxolanes of formula (I) belonging to the class defined hereinbefore.Type: GrantFiled: June 7, 1991Date of Patent: July 6, 1993Assignee: Ausimont S.p.AInventors: Walter Navarrini, Simonetta Fontana, Vittorio Montanari