Patents by Inventor Gian Tommaso Viola
Gian Tommaso Viola 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: 9951218Abstract: The invention relates to elastomeric compositions containing plant derivatives as biofillers and vegetable oil derivatives acting as extender oils. In particular, one object of the invention are elastomeric compositions comprising at least one elastomer, at least one vegetable oil derivative, at least one biofiller of plant origin and at least one coupling agent.Type: GrantFiled: June 18, 2013Date of Patent: April 24, 2018Assignee: NOVAMONT S.P.A.Inventors: Catia Bastioli, Luigi Capuzzi, Paolo Magistrali, Sebastia Gesti' Garcia, Gian Tommaso Viola, Giuseppe Savini, Fabio Bacchelli
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Patent number: 9394426Abstract: Elastomer composition comprising at least one elastomer and at least one vegetable oil derivative selected from one or more of: a. mixture of triglycerides comprising one or more of the following oligomeric structures: R4[OC(O)R1C(O)OCH2CH(OR2)CH2]nOR3 and said mixture of triglycerides having a Numerical Average Molecular Weight (Mn) of between 800 and 10,000, b. triglycerides of one or more long chain carboxylic acids including at least one carboxylic acid containing adjacent hydroxyl groups, c. esters of polyols with at least a monocarboxylic acid and at least a dicarboxylic acid, the said esters being other than triglycerides.Type: GrantFiled: January 21, 2015Date of Patent: July 19, 2016Assignee: Novamont S.p.A.Inventors: Catia Bastioli, Luigi Capuzzi, Paolo Magistrali, Sebastia Gesti′ Garcia, Gian Tommaso Viola, Giuseppe Savini, Fabio Bacchelli
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Publication number: 20150376393Abstract: The invention relates to elastomeric compositions containing plant derivatives as biofillers and vegetable oil derivatives acting as extender oils. In particular, one object of the invention are elastomeric compositions comprising at least one elastomer, at least one vegetable oil derivative, at least one biofiller of plant origin and at least one coupling agent.Type: ApplicationFiled: June 18, 2013Publication date: December 31, 2015Inventors: Catia Bastioli, Luigi Capuzzi, Paolo Magistrali, Sebastia Gesti' Garcia, Gian Tommaso Viola, Giuseppe Savini, Fabio Bacchelli
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Publication number: 20150158993Abstract: Elastomer composition comprising at least one elastomer and at least one vegetable oil derivative selected from one or more of: a. mixture of triglycerides comprising one or more of the following oligomeric structures: R4—[O—C(O)—R1—C(O)—O—CH2—CH(OR2)—CH2]n—O—R3 wherein R1 is selected from C2-C22 alkylenes, R2 is selected from one or more of the following groups consisting of C6-C24 dicarboxylic acid residues and C6-C24 monocarboxylic acid residues, R3 is selected from one or more of the following groups consisting of H, C6-C24 dicarboxylic acid residues and C6-C24 monocarboxylic acid residues, R4 is an alkyl group, n is an integer greater than or equal to 2, said C6-C24 dicarboxylic acid residues of R2 and R3 being esterified with monoalcohols and said mixture of triglycerides having a Numerical Average Molecular Weight (Mn) of between 800 and 10.000. b.Type: ApplicationFiled: January 21, 2015Publication date: June 11, 2015Inventors: Catia Bastioli, Luigi Capuzzi, Paolo Magistrali, Sebastia Gesti' Garcia, Gian Tommaso Viola, Giuseppe Savini, Fabio Bacchelli
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Patent number: 9029479Abstract: Process for the preparation of vinyl aromatic (co) polymers grafted on an elastomer in a controlled manner, comprising: dissolving an elastomer functionalized with bromoalkanes and nitroxy radicals, soluble in non-polar solvents, in a liquid phase consisting of a mixture of vinyl aromatic monomer(s)/polymerization solvent; feeding at least one radical initiator to the mixture, containing the functionalized elastomer in solution, and polymerizing the mixture thus obtained at a temperature higher than or equal to 1200 C; recovering the vinyl aromatic (co) polymer obtained after devolatization; and recycling the solvent/monomer(s) mixture, coming from the devolatization, to step (a).Type: GrantFiled: August 7, 2009Date of Patent: May 12, 2015Assignee: Polimeri Europa S.p.A.Inventors: Gian Tommaso Viola, Leonardo Chiezzi
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Patent number: 9000058Abstract: A process for devulcanizing fluoroelastomers having a fluorine content between 62% and 74% by weight vulcanized by ionic systems, preferably selected from bisphenol A and bisphenol AF, i.e. 2,2-bis(4-hydroxyphenyl)hexafluoropropane, the process including a step of heating the vulcanized fluoroelastomers in the presence of a hydrolysis composition having one or more chemical selected from water, water soluble alcohols, water soluble glycols and mixtures thereof, at a temperature from 350° C. to 430° C. Fluoroelastomers obtainable by this process and their use for the preparation of compounds and vulcanized compositions are also described.Type: GrantFiled: February 28, 2013Date of Patent: April 7, 2015Assignee: Dott. Viola & Partners Chemical Research S.R.L.Inventors: Alessandro Cervellati, Gian Tommaso Viola
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Patent number: 8969454Abstract: Elastomer composition comprising at least one elastomer and at least one vegetable oil derivative selected from one or more of: a. mixture of triglycerides comprising one or more of the following oligomeric structures: R4[OC(O)R1C(O)OCH2CH(OR2)CH2]nOR3 and said mixture of triglycerides having a Numerical Average Molecular Weight (Mn) of between 800 and 10,000, b. triglycerides of one or more long chain carboxylic acids including at least one carboxylic acid containing adjacent hydroxyl groups, c. esters of polyols with at least a monocarboxylic acid and at least a dicarboxylic acid, the said esters being other than triglycerides.Type: GrantFiled: December 20, 2011Date of Patent: March 3, 2015Assignee: Novamont S.p.A.Inventors: Catia Bastioli, Luigi Capuzzi, Paolo Magistrali, Sebastià Gesti′ Garcia, Gian Tommaso Viola, Giuseppe Savini, Fabio Bacchelli
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Publication number: 20140378562Abstract: A process for devulcanizing fluoroelastomers having a fluorine content between 62% and 74% by weight vulcanized by ionic systems, preferably selected from bisphenol A and bisphenol AF, i.e. 2,2-bis(4-hydroxyphenyl)hexafluoropropane, the process including a step of heating the vulcanized fluoroelastomers in the presence of a hydrolysis composition having one or more chemical selected from water, water soluble alcohols, water soluble glycols and mixtures thereof, at a temperature from 350° C. to 430° C. Fluoroelastomers obtainable by this process and their use for the preparation of compounds and vulcanized compositions are also described.Type: ApplicationFiled: February 28, 2013Publication date: December 25, 2014Applicant: DOTT. VIOLA & PARTNERS CHEMICAL RESEARCH S.R.L.Inventors: Alessandro Cervellati, Gian Tommaso Viola
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Patent number: 8664344Abstract: Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cyclo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium soluble in the process solvent containing a variable quantity of water, the H2O/Nd molar ratio ranging from 0.001/1 to 0.50/1; (ii) an alkyl compound of aluminum; (iii) an alkyl compound of aluminum in which at least one bond of Al consists of an Al—Cl bond; The total Al/Nd molar ratio ranging from 4/1 to 12/1, and the Cl/Nd molar ratio ranging from 2/1 to 6/1.Type: GrantFiled: March 19, 2009Date of Patent: March 4, 2014Assignee: Polimeri Europa S.p.A.Inventors: Gian Tommaso Viola, Marianna Zinna
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Publication number: 20130289182Abstract: Elastomer composition comprising at least one elastomer and at least one vegetable oil derivative selected from one or more of: a. mixture of triglycerides comprising one or more of the following oligomeric structures: R4[OC(O)R1C(O)OCH2CH(OR2)CH2]n OR3 wherein R1 is selected from C2-C22 alkylenes, R2 is selected from one or more of the following groups consisting of C6-C24 dicarboxylic acid residues and C6-C24 monocarboxylic acid residues, R3 is selected from one or more of the following groups consisting of H, C6-C24 dicarboxylic acid residues and C6-C24 monocarboxylic acid residues, R4 is an alkyl group, n is an integer greater than or equal to 2, said C6-C24 dicarboxylic acid residues of R2 and R3 being esterified with monoalcohols and said mixture of triglycerides having a Numerical Average Molecular Weight (Mn) of between 800 and 10.000. b. triglycerides of one or more long chain carboxylic acids including at least one carboxylic acid containing adjacent hydroxyl groups, c.Type: ApplicationFiled: December 20, 2011Publication date: October 31, 2013Applicant: NOVAMONT S.p.A.Inventors: Catia Bastioli, Luigi Capuzzi, Paolo Magistrali, Sebastia Gesti' Garcia, Gian Tommaso Viola, Giuseppe Savini, Fabio Bacchelli
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Patent number: 8394883Abstract: A raw elastomeric composition includes: (a1) from 30 to 90% by weight of a partially hydrogenated vinylarene-conjugated diene random elastomeric copolymer; (a2) from 10 to 70% by weight of one or more diene rubbers; (b) from 10 to 150 phr of silica; (c) from 0.1 to 20 phr of a coupling agent based on silane; (d) from 0.1 to 10 phr of a vulcanization agent; wherein the partially hydrogenated vinylarene-conjugated diene random copolymer has a structure which has nodes statistically distributed in the macromolecule, from which polymeric chains branch out, the bond between the nodes and the branches being a carbon-carbon bond.Type: GrantFiled: March 18, 2008Date of Patent: March 12, 2013Assignee: Polimeri Europa S.p.A.Inventors: Gian Tommaso Viola, Luca Soddu, Fabio Bacchelli
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Patent number: 8367778Abstract: Process for the elimination of residual mercaptans from nitrile rubbers, comprising: a. adding a colloidal emulsion of sulfur to a nitrile latex emulsion (NBR rubber latex) containing free mercaptan and with a pH of between 7 and 14, at a temperature ranging from 30 to 120° C.; b. coagulating the nitrile latex c. washing with demineralized water and drying the NBR rubber recovered after coagulation.Type: GrantFiled: August 13, 2009Date of Patent: February 5, 2013Assignee: Polimeri Europa S.p.A.Inventors: Gian Tommaso Viola, Davide De Santi, Romano Lima
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Publication number: 20110207884Abstract: Process for the preparation of vinyl aromatic (co) polymers grafted on an elastomer in a controlled manner, comprising: dissolving an elastomer functionalized with bromoalkanes and nitroxy radicals, soluble in non-polar solvents, in a liquid phase consisting of a mixture of vinyl aromatic monomer (s)/polymerization solvent; feeding at least one radical initiator to the mixture, containing the functionalized elastomer in solution, and polymerizing the mixture thus obtained at a temperature higher than or equal to 1200C; recovering the vinyl aromatic (co) polymer obtained after devolatization; and recycling the solvent/monomer (s) mixture, coming from the devolatization, to step (a).Type: ApplicationFiled: August 7, 2009Publication date: August 25, 2011Applicant: POLIMERI EUROPA S.P.A.Inventors: Gian Tommaso Viola, Leonardo Chiezzi
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Publication number: 20110112261Abstract: Process for the preparation of polybutadiene effected by the polymerization of butadiene in an aliphatic and/or cyclo-aliphatic solvent in the presence of a catalytic system prepared in situ which comprises: (i) a carboxylate of neodymium soluble in the process solvent containing a variable quantity of water, the H2O/Nd molar ratio ranging from 0.001/1 to 0.50/1; (ii) an alkyl compound of aluminum; (iii) an alkyl compound of aluminum in which at least one bond of Al consists of an Al—Cl bond; The total Al/Nd molar ratio ranging from 4/1 to 12/1, and the Cl/Nd molar ratio ranging from 2/1 to 6/1.Type: ApplicationFiled: March 19, 2009Publication date: May 12, 2011Applicant: POLIMERI EUROPA S.P.A.Inventors: Gian Tommaso Viola, Marianna Zinna
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Publication number: 20100317807Abstract: Process for the partial hydrogenation of random vinyl arene-conjugated diene copolymers in the presence of 2-methoxyethyl tetrahydrofuran as randomizing agent, comprising: reacting the random vinyl arene-conjugated diene copolymer, dissolved in a hydrocarbon solvent, with hydrogen, in the presence of a titanium complex and an alkylating agent, until the desired hydrogenation degree is obtained the above process being characterized in that the alkylating agent is selected from compounds having the general formula MgR1R2Type: ApplicationFiled: May 30, 2008Publication date: December 16, 2010Inventors: Gian Tommaso Viola, Luca Soddu, Marianna Zinna
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Publication number: 20100130639Abstract: A raw elastomeric composition includes: (a1) from 30 to 90% by weight of a partially hydrogenated vinylarene-conjugated diene random elastomeric copolymer; (a2) from 10 to 70% by weight of one or more diene rubbers; (b) from 10 to 150 phr of silica; (c) from 0.1 to 20 phr of a coupling agent based on silane; (d) from 0.1 to 10 phr of a vulcanization agent; wherein the partially hydrogenated vinylarene-conjugated diene random copolymer has a structure which has nodes statistically distributed in the macromolecule, from which polymeric chains branch out, the bond between the nodes and the branches being a carbon-carbon bond.Type: ApplicationFiled: March 18, 2008Publication date: May 27, 2010Applicant: POLIMERI EUROPA S.P.A.Inventors: Gian Tommaso Viola, Luca Soddu, Fabio Bacchelli
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Publication number: 20100063216Abstract: Process for the elimination of residual mercaptans from nitrile rubbers, comprising: a. adding a colloidal emulsion of sulfur to a nitrile latex emulsion (NBR rubber latex) containing free mercaptan and with a pH of between 7 and 14, at a temperature ranging from 30 to 120° C.; b. coagulating the nitrile latex c. washing with demineralized water and drying the NBR rubber recovered after coagulation.Type: ApplicationFiled: August 13, 2009Publication date: March 11, 2010Applicant: POLIMERI EUROPA S.p.A.Inventors: Gian Tommaso Viola, Davide De Santi, Romano Lima
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Patent number: 7473741Abstract: Process for the selective hydrogenation of double olefinic bonds present in polymers and copolymers of conjugated dienes, which comprises: (a) preparation of a hydrocarbon solution of the (co)polymer to be hydrogenated, optionally containing a modifier (C); (b) addition to the above solution of the (co)polymer to be hydrogenated of a catalytic solution formed “in situ” comprising: (b1) at least one bis-(cyclopentadienyl)titanium derivative having general formula (I) (C5H5)2Ti (R) (R1), wherein R and R1, the same or different, are halogens, preferably R?R1?Cl; the above compound (I) being dispersed in one or more non-solvent diluents; (b2) at least one organo-derivative having general formula (II) M(R2)(R3), wherein M is selected from zinc and magnesium, and R2 and R3, the same or different, are selected from C1-C16 alkyls, preferably C1-C8; (b3) at least one modifier (C); the above selective hydrogenation being carried out in a hydrogen atmosphere until the disappearance of the double olefinic bonds.Type: GrantFiled: May 3, 2006Date of Patent: January 6, 2009Assignee: Polimeri Europa S.p.A.Inventors: Gian Tommaso Viola, Claudio Cavallo
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Publication number: 20070219316Abstract: Process in continuous carried out in the presence of at least two reactors in series, for the preparation of statistical vinyl arene/conjugated diene copolymers, the vinyl arene content ranging from 15 to 50% by weight, by means of the copolymerization under isothermal conditions in a hydrocarbon solvent, at a temperature ranging from 30 to 120° C., of vinyl arene/conjugated diene monomers, in the presence of at least one initiator and a 2-methoxy ethyl tetra-hydrofuran (THFA-ethyl) modifier.Type: ApplicationFiled: February 22, 2007Publication date: September 20, 2007Applicant: POLIMERI EUROPA S.p.AInventor: Gian Tommaso VIOLA
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Patent number: 7112632Abstract: A process for the preparation of low branch content polybutadiene comprising: (a) a first butadiene polymerisation stage; (b) treatment of the polymer solution obtained upon completion of stage (a) with a coupling agent selected from: (i) polyunsaturated natural oils; (ii) butadiene and/or isoprene oligomers; (iii) butadiene and/or isoprene co-polymers with vinylarene monomers; the unsaturations present in compounds (i)–(iii) being at least partially substituted with groups selected from epoxides, anhydrides and esters; (c) recovery of the low branch content polybutadiene obtained upon completion of stage (b).Type: GrantFiled: October 17, 2005Date of Patent: September 26, 2006Assignee: Polimeri Europa S.p.A.Inventors: Gian Tommaso Viola, Fabio Bacchelli, Silvia Valenti