Patents by Inventor Stefano Turri

Stefano Turri 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).

  • Publication number: 20210040293
    Abstract: There is described a binding resin for nonwoven fabrics, in particular for manufacturing supports for bituminous membranes, consisting of 100% natural, sustainable raw materials. The resin is an aqueous solution consisting of starch, a crosslinking agent of natural origin and a catalyst.
    Type: Application
    Filed: August 24, 2020
    Publication date: February 11, 2021
    Applicant: POLITEX s.a.s. di FREUDENBERG POLITEX s.r.l.
    Inventors: Massimo MIGLIAVACCA, Marinella LEVI, Stefano TURRI
  • Publication number: 20140273685
    Abstract: There is described a binding resin for nonwoven fabrics, in particular for manufacturing supports for bituminous membranes, consisting of 100% natural, sustainable raw materials. The resin is an aqueous solution consisting of starch, a crosslinking agent of natural origin and a catalyst.
    Type: Application
    Filed: October 16, 2012
    Publication date: September 18, 2014
    Applicant: POLITEX s.a.s. di FREUDENBERG POLITEX s.r.l.
    Inventors: Massimo Migliavacca, Marinella Levi, Stefano Turri
  • Publication number: 20110244204
    Abstract: The present invention concerns a textile support for bituminous membranes, particularly for waterproofing roof surfaces of buildings, characterised by a high dimensional stability. The support comprises at least two layers (1, 2) of non-woven polyester or polymeric material in general and a plurality of longitudinal reinforcing filaments (3). The reinforcing filaments (3), preferably of glass, have been treated in advance with a size which allows the formation of stable chemical bonds, not strongly influenced by temperature.
    Type: Application
    Filed: December 12, 2008
    Publication date: October 6, 2011
    Inventors: Massimo Migliavacca, Stefano Turri, Marinella Levi
  • Patent number: 7358306
    Abstract: Curable (per)fluoropolyether polyurethanes obtained by reaction in a first step of a) (per)fluoropolyether diols having a number average molecular weight from 2,000 to 5,000; with b) diisocyanates of formula OCN—R—NCO ??(VIA) wherein R is a hydrogenated and/or fluorinated radical; in a second step with the compound c) saturated or unsaturated aliphatic hydrogenated diols, (alkyl)cycloaliphatic, aromatic; oligomers or polymers of butadiene with a number average molecular weight from 500 to 4,000 having end hydroxyl groups; provided that: when the diisocyanate b) is used and the radical R in formula (VIA) is: —Ph—CH2—Ph—, the hydrogenated diols c) are optional; when the radical R has a meaning different from that above mentioned, at least one of the used hydrogenated diols c) is selected from those belonging to the c2)-c6) groups; the sum of the equivalents of the compounds a) and c) being equal to the equivalents of the compound b).
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: April 15, 2008
    Assignee: Ausimont S.p.A.
    Inventors: Stefano Turri, Sergio Novelli, Anna Staccione
  • Patent number: 7323435
    Abstract: Fluorinated oligourethanes, having number average molecular weight lower than or equal to 9,000, having a branched structure, formed of the following monomers and macromers: a) aliphatic, cycloaliphatic or aromatic polyisocyanates, b) heterofunctional hydrogenated monomers having general formula: X0—(CR1AR2A)b—Y0 ??(Ib) one or more of the following compounds: c) bifunctional hydroxyl (per)fluoropolyethers (PFPE diols) having number average molecular weight in the range 400-3,000, e) monofunctional hydroxyl (per)fluoropolyethers or monofunctional hydroxyl (per)fluoroalkanes (e?), having number average molecular weight in the range 300-1,000, and optionally the following compounds: d) heterofunctional monomers, dI) hydrogen-active compounds, capable to form bonds with the NCO functions stable at the hydrolysis but weak at heat.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: January 29, 2008
    Assignee: Ausimont S.p.A.
    Inventors: Stefano Turri, Marinella Levi, Tania Trombetta
  • Patent number: 7323084
    Abstract: Use for the paper sizing of aqueous polyurethane dispersions from (per)fluoropolyethers obtainable by reaction among the following compounds: a) (per)fluoropolyether diols having a number average molecular weight from 400 to 5,000; b) diisocyanates having formula: OCN—R—NCO??(VIa) ?wherein R is an aliphatic, cycloaliphatic bifunctional radical; or an aromatic bifunctional radical; c) diols containing one carboxylic function and optionally one or both the following components: d) hydrazine and/or aliphatic diamines; e) monofunctional hydroxylic (per)fluoropolyethers having a number average molecular weight in the range 300-1,000.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 29, 2008
    Assignee: Ausimont S.p.A.
    Inventors: Stefano Turri, Tania Trombetta, Paolo Iengo
  • Patent number: 7015278
    Abstract: Formulations formed by aqueous dispersions of cationic ionomer fluorinated polyurethanes based on (per)fluoropolyethers, having end groups constituted by —NCO groups reacted with hydrogenactive compounds to give covalent bonds stable to water but thermolabile, usable for the surface hydro- and oil-repellent treatment of textiles.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: March 21, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Tania Trombetta, Stefano Turri
  • Patent number: 6992132
    Abstract: Compositions comprising anionic ionomeric polyurethanes crosslinkable in a wide temperature range, said composition comprising the following components: I) an aqueous dispersion of a linear crosslinkable ionomeric polyurethane, containing carboxylic groups and having a perfluoropolyether structure; II) a crosslinking agent, the ratio between the equivalents of the functional groups of the crosslinking agent and of the carboxylic groups of component I) being at least 0.7 up to 1.5, preferably 0.9–1.2, said crosslinking agent being dispersible or soluble in the dispersion component I).
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: January 31, 2006
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Tania Trombetta, Fiorenza D'Aprile, Stefano Turri
  • Patent number: 6936654
    Abstract: Additives for hydrogenated resins obtainable by using the following components: a) bifunctional perfluoropolyethers having a —COOR end group, optionally in admixture with monofunctional perfluoropolyethers having a —COOR end group, b) mono, bi or polyfunctional hydrogenated monomers having functional groups able to react with the —COOR end groups of compound a); c) polyolefins having functional groups able to react with the block oligomer/polymer obtained by reaction of a) with b), preferably said functional groups being obtained by grafting with maleic anhydride; reacting in a first step a) with b), until disappearance of the —COOR group of component a), and in a second step the product obtained from the reaction of a) with b) with the functionalized polyolefins c).
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: August 30, 2005
    Assignee: Ausimont, S.p.A.
    Inventors: Stefano Turri, Aldo Sanguineti, Massimo Scicchitano
  • Patent number: 6899955
    Abstract: A process for inhibiting the fouling of a substrate in a marine fouling environment, which comprises forming on the substrate, before exposure to the said environment, a coating comprising a curable fluorinated resin of the general formula: W-L-YFC—O—Rf—CFY-L-W wherein: W is a group of the general formula —Si(R1)?(OR2)3-?, wherein ?=0, 1, or 2, preferably ?=0, R1 and R2 independently have the meaning of linear of branched C1-C6 alkyl groups, optionally containing one or more ether groups, or C7-C12 aryl or alkyl groups, and preferably R1 and R2 are C1-C4 alkyl groups; L is an organic linking group; Y is F or CF3; and Rf is a group having an average molecular weight by number between 350 and 8000, preferably between 500 and 3000, and comprising repeating units having at least one of the following structures randomly distributed along the chain: —CFXO—, CF2CF2O—, CF2CF2CF2O—, CF2CF2CF2CF2O—, CR4R5CF2CF2O—, —(CF(CF3)CF2O)—, —CF2CF(CF3)O—, wherein X is F or CF3, R4 and R5 independently have the meaning of H, Cl,
    Type: Grant
    Filed: June 1, 2001
    Date of Patent: May 31, 2005
    Assignees: International Coatings Limited, Ausimont S.p.A.
    Inventors: Robert Lines, David Neil Williams, Stefano Turri
  • Patent number: 6756468
    Abstract: Cmpositions for coatings having a dry content higher than 80%, preferably of about 85-90% by weight, based on polyisocyanates and PFPEs, completely crosslinkable also in a range of temperatures between 5° C. and 20° C., comprising the following components: Component 1): mixture comprising: 1.a) Partially fluorinated prepolymers, having free NCO groups, obtained by reaction of (per)fluoropolyethers (PFPEs) diols having number average molecular weight Mn in the range 800-1,300 with the cyclic trimer of the isophorondiisocyanate, 1.b) non cyclic isocyanic trimer of hexamethylendiisocyanate, Component 2): (per) fluoropolyether (PFPE) diol with Mn in the range 350-700, preferably 500-650, component 3): inert organic solvent in crosslinking conditions, complement to 100% by weight of the composition.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: June 29, 2004
    Assignee: Ausimont S.p.A.
    Inventors: Stefano Turri, Carlo Pogliani
  • Publication number: 20040102575
    Abstract: Additives for hydrogenated resins obtainable by using the following components:
    Type: Application
    Filed: November 17, 2003
    Publication date: May 27, 2004
    Applicant: Ausimont S.p.A.
    Inventors: Stefano Turri, Aldo Sanguineti, Massimo Scicchitano
  • Patent number: 6683128
    Abstract: Additives for hydrogenated resins obtainable by using the following components: a) bifunctional perfluoropolyethers having a —COOR end group, optionally in admixture with monofunctional perfluoropolyethers having a —COOR end group, b) mono, bi or polyfunctional hydrogenated monomers having functional groups able to react with the —COOR end groups of compound a); c) polyolefins having functional groups able to react with the block oligomer/polymer obtained by reaction of a) with b), preferably said functional groups being obtained by grafting with maleic anhydride; reacting in a first step a) with b), until disappearance of the —COOR group of component a), and in a second step the product obtained from the reaction of a) with b) with the functionalized polyolefins c).
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: January 27, 2004
    Assignee: Ausimont S.p.A.
    Inventors: Stefano Turri, Aldo Sanguineti, Massimo Scicchitano
  • Publication number: 20030229176
    Abstract: Compositions comprising anionic ionomeric polyurethanes crosslinkable in a wide temperature range, said composition comprising the following components:
    Type: Application
    Filed: June 4, 2003
    Publication date: December 11, 2003
    Applicant: SOLVAY SOLEXIS S.p.A.
    Inventors: Tania Trombetta, Fiorenza D'Aprile, Stefano Turri
  • Publication number: 20030166769
    Abstract: Formulations formed by aqueous dispersions of cationic ionomer fluorinated polyurethanes based on (per)fluoropolyethers, having end groups constituted by —NCO groups reacted with hydrogenactive compounds to give covalent bonds stable to water but thermolabile, usable for the surface hydro- and oil-repellent treatment of textiles.
    Type: Application
    Filed: December 30, 2002
    Publication date: September 4, 2003
    Applicant: AUSIMONT S.p.A.
    Inventors: Tania Trombetta, Stefano Turri
  • Publication number: 20030161962
    Abstract: A process for inhibiting the fouling of a substrate in a marine fouling environment, which comprises forming on the substrate, before exposure to the said environment, a coating comprising a curable fluorinated resin of the general formula: W-L-YFC—O—Rf—CFY-L-W wherein: W is a group of the general formula —Si(R1)&agr;(OR2)3-&agr;, wherein &agr;=0, 1, or 2, preferably &agr;=0, R1 and R2 independently have the meaning of linear of branched C1-C6 alkyl groups, optionally containing one or more ether groups, or C7-C12 aryl or alkyl groups, and preferably R1 and R2 are C1-C4 alkyl groups; L is an organic linking group; Y is F or CF3; and Rf is a group having an average molecular weight by number between 350 and 8000, preferably between 500 and 3000, and comprising repeating units having at least one of the following structures randomly distributed along the chain: —CFXO—, CF2CF2O—, CF2CF2CF2O—, CF2CF2CF2CF2O—, CR4R5CF2CF2O—, —(CF(CF3)C
    Type: Application
    Filed: April 22, 2003
    Publication date: August 28, 2003
    Inventors: Robert Lines, David Neil Williams, Stefano Turri
  • Publication number: 20030139540
    Abstract: Curable (per)fluoropolyether polyurethanes obtained by reaction in a first step of
    Type: Application
    Filed: June 20, 2002
    Publication date: July 24, 2003
    Inventors: Stefano Turri, Sergio Novelli, Anna Staccione
  • Publication number: 20030136533
    Abstract: Use for the paper sizing of aqueous polyurethane dispersions from (per)fluoropolyethers obtainable by reaction among the following compounds:
    Type: Application
    Filed: June 28, 2002
    Publication date: July 24, 2003
    Applicant: Ausimont S.p.A.
    Inventors: Stefano Turri, Tania Trombetta, Paolo Iengo
  • Patent number: 6579835
    Abstract: Use of fluorinated polyurethanes thermally crosslinkable for obtaining coatings having an improved friction coefficient for the dry lubrication of rubbers, plastics, metals, glass, said polyurethanes obtainable from aqueous dispersions of cationic oligourethanes having a molecular weight≦9,000, formed by: a) polyisocyanates, having NCO functionality higher than 2, b) bifunctional hydrogenated monomers, c) bifunctional hydroxylated (per)fluoropolyethers, e) monofunctional hydroxyl or carboxylic (per)fluoropolyethers or monofunctional hydroxyl (per)fluoroalkanes optionally: d) hydrogenated monomers by which it is possible to insert a crosslinkable chemical function in the oligourethane; dI) hydrogen-active compounds, able to form with the NCO functions thermolabile bonds.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: June 17, 2003
    Assignee: Ausimont S.p.A.
    Inventors: Massimo Scicchitano, Tania Trombetta, Stefano Turri
  • Publication number: 20020177651
    Abstract: Additives for hydrogenated resins obtainable by using the following components:
    Type: Application
    Filed: March 12, 2002
    Publication date: November 28, 2002
    Applicant: Ausimont S.p.A.
    Inventors: Stefano Turri, Aldo Sanguineti, Massimo Scicchitano