Fluorine-containing Monomer Patents (Class 524/805)
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Patent number: 6759477Abstract: This invention discloses a method for preparing imides (I) and (II) from compounds having a sulfonyl fluoride functional group. The imides so prepared are useful in a variety of catalytic and electrochemical applications.Type: GrantFiled: May 1, 2002Date of Patent: July 6, 2004Assignee: E. I. du Pont de Nemours and CompanyInventor: Hanne Anna Katharina Blau
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Publication number: 20040122163Abstract: Provided is a fluoroplastic or latex comprising a nitrogen-containing cure site and units derived from a fluorinated monomer. Also provided is a curable blend comprising a fluoroplastic and a fluoroleastomer gum, wherein said fluoroplastic comprises a nitrogen-containing cure site and units derived from a fluorinated monomer. Also provided are cured, shaped articles, latex blends, and a process for preparing a fluoroplastic comprising: (a) introducing at least 60 weight percent of a first polymerizable composition comprising a fluorinated monomer into a polymerization reactor; (b) polymerizing said composition in said reactor; (c) introducing at least 70 weight percent of a second polymerizable composition comprising a nitrogen-containing cure site monomer into said reactor following addition of at least 80% by weight of said first polymerizable composition; and (d) copolymerizing said nitrogen-containing cure site monomer with said fluorinated monomer to form a fluoroplastic.Type: ApplicationFiled: December 1, 2003Publication date: June 24, 2004Applicant: 3M Innovative Properties CompanyInventors: Werner M.A. Grootaert, Klaus Hintzer, Robert E. Kolb, Tilman Zipplies
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Patent number: 6734227Abstract: The present invention relates to optical elements comprising fluorochemical surface treatments. The invention further relates to articles such as retroreflective sheetings, pavement markings and beaded projection screens comprising a binder and the surface treated optical elements. The surface treatment comprises at least one fluoropolymer selected from a) fluoropolymers comprising a fluorinated hydrocarbon backbone and side chains comprising at least one of fluoroalkyl, fluoroether alkyl, fluoroalkoxy and mixtures thereof; and b) fluoropolymers comprising a hydrocarbon backbone and side chains comprising at least one of fluoroether alkyl, fluoroalkoxy and mixtures thereof.Type: GrantFiled: September 24, 2001Date of Patent: May 11, 2004Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, George Van Dyke Tiers, Mark J. Pellerite
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Publication number: 20040082746Abstract: Tetrafluoroethylene (TFE) thermoprocessable copolymer microspheres having a substantially spherical shape for at least 95% by weight, the average size of the microspheres being in the range 25 &mgr;m and 2 mm, the bulk density being in the range 0.5 and 1.1 g/cm3.Type: ApplicationFiled: June 23, 2003Publication date: April 29, 2004Applicant: Ausimont S.p.A.Inventors: Hua Wu, Francesco Morandi
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Publication number: 20040072935Abstract: The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP.Type: ApplicationFiled: October 7, 2003Publication date: April 15, 2004Applicant: 3M Innovative Properties CompanyInventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
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Patent number: 6710123Abstract: A fluoropolymer is described which is a polymer reaction product of a fluoropolymer comprising a polymer reaction product of a) at least one first alkylene co-monomer containing at least one fluorine atom; b) optionally at least one monomer selected from 1) at least one second alkylene containing at least one fluorine atom; 2) at least one alkyl alkenyl ether containing at least one fluorine atom; 3) at least one aliphatic or cyclic ketone containing at least one fluorinated alpha-alpha position; or 4) non-fluorinated alkene, alkyl alkenyl ether, or alkenyl ester; and c) at least one sterically hindered alkenyl or alkenyl ether organo silane co-monomer with or without at least one fluorine substituent. The fluoropolymer can be subsequently cross-linked or further reacted. Methods of making the fluoropolymer are further disclosed as well as applications of the fluoropolymers.Type: GrantFiled: June 28, 2001Date of Patent: March 23, 2004Assignee: Atofina Chemicals, Inc.Inventors: Ramin Amin-Sanayei, Claude Christophe Granel
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Patent number: 6710132Abstract: Fluoroelastomeric compositions comprising: A) a fluoroelastomeric matrix based on tetrafluoroethylene (TFE); B) a semi-crystalline fluoropolymer, in an amount from 2 to 90% by weight based on the total of A)+B), comprising a semi-crystalline fluoropolymer core coated by a semi-crystalline fluoropolymer shell containing bromine and/or iodine in the polymer chain; the fluoroelastomer A) incorporates the fluoropolymer B), the fluoropolymer B) being formed by tetrafluoroethylene (TFE) homopolymers, or by TFE copolymers with one or more monomers containing at least one unsaturation of ethylene type, the average sizes of the semi-crystalline fluoropolymer particles being from 10 to 100 nm, preferably from 10 to 60 nm.Type: GrantFiled: May 22, 2002Date of Patent: March 23, 2004Assignee: Ausimont S.p.A.Inventors: Marco Apostolo, Margherita Albano, Stefano Arrigoni
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Patent number: 6706803Abstract: A process for the synthesis of chlorotrifluoroethylene (PCTFE) (co)polymers, containing at least 80% by moles of CTFE, being the complement to 100 one or more fluorinated monomers, preferably the complement to 100 is formed of one or more perfluorinated monomers, characterized in that the reaction medium comprises (per)fluoropolyoxyalkylene microemulsions wherein the fluorinated surfactant is salified with sodium and/or potassium and an inorganic potassium and/or sodium initiator.Type: GrantFiled: July 7, 2000Date of Patent: March 16, 2004Assignee: Ausimont S.p.A.Inventors: Julio A. Abusleme, Claudia Manzoni
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Publication number: 20040023176Abstract: ABSTRACT A fluorinated polymer having a polydispersity index (Mw/Mn) of 1-1.20 can be prepared by subjecting an aromatic monomer having trifluoromethyl groups and acid labile groups to living anion polymerization. The fluorinated polymer is suitable for use in chemically amplified resist compositions having sensitivity to ultraviolet radiation.Type: ApplicationFiled: July 30, 2003Publication date: February 5, 2004Inventors: Yuji Harada, Jun Hatakeyama, Yoshio Kawai, Michitaka Ootani, Haruhiko Komoriya, Kazuhiko Maeda
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Patent number: 6660803Abstract: A polyfluoroalkyl iodide is reacted with a (meth)acrylic acid metal salt to form a corresponding polyfluoroalkyl (meth)acrylate ester. The polyfluoroalkyl (meth)acrylate ester is separated from the reaction product through the evaporation, so that the ester is recovered. According to the present method, the polyfluoroalkyl iodide is reacted with the (meth)acrylic acid metal salt without introducing water, thus making it possible to prepare a polyfluoroalkyl (meth)acrylate ester. The resulting ester can also be used to copolymerize an ethylenically unsaturated compound capable of copolymerizing with the ester.Type: GrantFiled: January 9, 2002Date of Patent: December 9, 2003Assignee: Daikin Industries, Ltd.Inventors: Takashi Yasuhara, Shigeharu Iida, Osamu Yamamoto, Toshitaka Nakano
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Patent number: 6653379Abstract: The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP. These fluorothermoplastic compositions have a flex life that fits the equation: log(flex life cycles)≧0.71+4.0*(MFI(−0.294)), a method of making fluorothermoplastic compositions, a method of improving stress crack resistance, and fluorothermoplastic articles.Type: GrantFiled: July 12, 2001Date of Patent: November 25, 2003Assignee: 3M Innovative Properties CompanyInventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
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Patent number: 6642307Abstract: In the emulsion obtained by forcedly emulsifying by applying a high shearing force on the water insoluble liquid in the presence of a small amount of emulsifying agent, at least one of fluorine-containing monomers being in the form of gas at ordinary temperature at atmospheric pressure is emulsion-polymerized stably and efficiently. An amount of the emulsifying agent is an amount which does not change the number of water insoluble liquid particles in the emulsion during the polymerization.Type: GrantFiled: April 12, 2001Date of Patent: November 4, 2003Assignee: Daikin Industries, Ltd.Inventors: Toshio Sogabe, Tatsuya Morikawa, Yoshiyuki Tanaka, Masanori Kitaichi, Mitsuru Kishine
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Patent number: 6639011Abstract: A polymerization process in aqueous emulsion of: (I) one or more fluorinated monomers containing at least one ethylene unsaturation; (II) one or more fluorinated monomers, containing sulphonyl groups —SO2F; said process comprising the use of a surfactant having the formula: Rf—X−M+ wherein X is equal to —COO, —SO3; M is selected from H, NH4, alkaline metal; Rf represents a (per)fluoropolyether chain, preferably having number average molecular weight comprised between about 230 and about 1,800.Type: GrantFiled: December 20, 2002Date of Patent: October 28, 2003Assignee: Ausimont S.p.A.Inventors: Vincenzo Arcella, Alessandro Ghielmi, Giulio Tommasi
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Publication number: 20030195314Abstract: The present invention provides a method of preparing an aqueous dispersion of poly(perfluorovinyl ether) homopolymers. The present invention further relates to a method of making an aqueous fluoropolymer dispersion comprising bicomponent particles of poly(perfluorovinyl ether) homopolymers and a second fluoropolymer. The dispersions of the present invention may be used for rendering fibrous substrates oil repellent, water repellent and/or stain repellent without altering the looks and feel of the substrate.Type: ApplicationFiled: April 5, 2002Publication date: October 16, 2003Applicant: 3M Innovative Properties CompanyInventors: Richard S. Buckanin, Lian S. Tan, E. Steven McAlister
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Publication number: 20030191258Abstract: The present invention provides a method of preparing an aqueous dispersion of poly(perfluorovinyl ether)homopolymers. The present invention further relates to a method of making an aqueous fluoropolymer dispersion comprising bicomponent particles of poly(perfluorovinyl ether)homopolymers and a second fluoropolymer. The dispersions of the present invention may be used for rendering fibrous substrates oil repellent, water repellent and/or stain repellent.Type: ApplicationFiled: April 5, 2002Publication date: October 9, 2003Applicant: 3M Innovative Properties CompanyInventors: Lian S. Tan, Richard S. Buckanin, E. Steven McAlister
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Patent number: 6624268Abstract: A water and oil repellent aqueous dispersion is provided which is excellent in water and oil repellency and waterdrop rolling property and has dispersion stability even in the presence of co-agents and contaminants in the treatment bath. A preparative process comprises emulsifying a stock composition containing a polymerizable monomer containing a (meth)acrylate having perfluoroalkyl group as an essential component, a non-fluorine type surfactant containing no aromatic group, water and a solvent having a viscosity of at least 3 cP at 25° C. under pressure and polymerizing the stock composition.Type: GrantFiled: June 26, 2001Date of Patent: September 23, 2003Assignee: Asahi Glass Company, LimitedInventors: Takashige Maekawa, Kazuya Oharu, Shuichiro Sugimoto
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Publication number: 20030176572Abstract: An aqueous dispersion comprising a polymer (a) having a repeating unit (A) which comprises four carbon atoms connected in a linear chain and which has one double bond at the second position and a polyfluoroalkyl group bonded to an arbitrary carbon atom, and a surfactant (B) having a hydrophile-lipophile balance of at least 10, wherein the polymer (a) is dispersed in an aqueous medium by the surfactant (B).Type: ApplicationFiled: January 30, 2003Publication date: September 18, 2003Applicant: Asahi Glass Company, LimitedInventors: Takashige Maekawa, Minako Shimada, Ryuji Seki, Taiki Hoshino
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Publication number: 20030153674Abstract: Fluoropolymer aqueous dispersions having particles with average diameters from 150 to 400 nm, comprising bifunctional fluorinated surfactants having formula:Type: ApplicationFiled: February 10, 2003Publication date: August 14, 2003Applicant: Solvay Solexis S.p.AInventors: Mario Visca, Alba Chittofrati, Valeri Kapeliouchko, Marco Malvasi
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Patent number: 6602961Abstract: A fluorine-containing elastomer composition comprising a terpolymer of tetrafluoroethylene, perfluoro(lower alkyl vinyl ether) and perfluoro(&ohgr;-cyanoalkyl vinyl ether) and a bisaminophenyl compound represented by the following general formula as a curing agent: wherein A is an alkylidene group having 1 to 6 carbon atoms, a perfluoroalkylidene group having 1 to 10 carbon atoms, a SO2 group, an O group, a CO group, or a carbon-carbon bond capable of directly coupling two benzene rings; and X and Y each are a hydroxyl group or an amino group can give a rubbery vulcanization product with a good processability and good physical properties by a commercially available cross-linking agent free from any safety problem.Type: GrantFiled: July 11, 1995Date of Patent: August 5, 2003Inventors: Satoru Saito, Haruyoshi Tatsu, Hiroaki Murata
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Patent number: 6576703Abstract: Process for the preparation of a dispersion based on homopolymers/copolymers of tetrafluoroethylene (TFE), said dispersion having a bimodal or multimodal distribution of the particle diameters, wherein the fraction of small particles is in the range 1.5-35% by weight calculated on the dry product; the ratio between the average diameter of the small particles with respect to the average diameter of the dispersion obtained from the polymerization being in the range 0.02-0.6; said process comprising the following essential steps: (a) preparation of an aqueous microemulsion comprising fluorinated surfactants and (per)fluoropolyether oils (PFPE); (b) feeding of the microemulsion into the polymerization reactor; (c) feeding of at least one fluorinated surfactant.Type: GrantFiled: February 22, 2001Date of Patent: June 10, 2003Assignee: Ausimont S.p.A.Inventors: Valery Kapeliouchko, Enrico Marchese
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Publication number: 20030027884Abstract: A binder composition for a photocatalytic coating is disclosed. The binder composition comprises 60-80 wt. % of a first monomer which is a non-fluoro containing monomer selected from the group consisting of acrylic monomers, methacrylic monomers, and mixtures thereof, having an aliphatic group and 20-40 wt. % of a second monomer which is at least one monomer selected from the group consisting of a fluoro containing monomer and a silicone monomer. The fluoro containing monomer is selected from the group consisting of styrene monomer, acrylic monomer and methacrylic monomer.Type: ApplicationFiled: July 24, 2001Publication date: February 6, 2003Inventors: Seong-Kil Kim, Hee-Dong Jang, Kyung-Ik Lee, Hong-Soo Park
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Publication number: 20030013791Abstract: The invention provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97.5 mole percent (mol %) tetrafluoroethylene (TFE), about 2 to about 3 mol % perfluoro (propyl vinyl ether) (PPVE), and about 0.5 to about 3 mol % hexafluoropropylene (HFP). The invention also provides a fluorothermoplastic composition comprising interpolymerized units derived from about 94 to about 97 mol % TFE, about 0.75 to about 3 mol % PPVE, and about 1.5 to about 3.5 mol % HFP.Type: ApplicationFiled: July 12, 2001Publication date: January 16, 2003Inventors: Thomas J. Blong, Lisa P. Chen, Ralph Kaulbach, Friedrich Kloos, Georg Burkard
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Patent number: 6503988Abstract: A polytetrafluoroethylene fine powder excellent in powder flowability which comprises fine particles (the primary particle) having a mean particle diameter of 0.05 to 1 &mgr;m, an apparent density of 0.52 to 0.70 g/ml, a standard specific gravity (SSG) of 2.14 to 2.23, and a secondary mean particle diameter of 100 to 1000 &mgr;m, antidripping agent using the above polytetrafluoroethylene fine powder, flame resistive resin composition containing this powder, and composition for inhibiting dust characteristics containing this powder.Type: GrantFiled: April 23, 1998Date of Patent: January 7, 2003Assignee: Daikin Industries, Ltd.Inventors: Takahiro Kitahara, Kazutaka Hosokawa, Tetsuo Shimizu
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Patent number: 6500894Abstract: Compositions formed of aqueous dispersions comprising a mixture of the following fluorinated polymers: A) (meth)acrylic (co)polymers containing fluorine, and B) cationic ionomers of fluorinated polyurethanes based on (per) fluoropolyethers, the weight ratio A):B), calculated on the dry product, being in the range 70:30 and 30:70.Type: GrantFiled: March 24, 2000Date of Patent: December 31, 2002Assignee: Ausimont S.p.A.Inventors: Daria Lenti, Tania Trombetta, Gabriella Carignano
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Publication number: 20020193500Abstract: A fluoroclastomer latex is produced that is capable of forming films having excellent water resistance. In a first step, polymerization of fluorinated monomers is carried out in the presence of fluorinated surfactants at a pH of 3-8. The pH of the resultant fluoroelastomer emulsion composition is then adjusted to 5-9 and the emulsion is concentrated to yield a solids-rich latex.Type: ApplicationFiled: August 28, 2001Publication date: December 19, 2002Inventors: Klaus Hintzer, Gernot Lohr, Albert Killich, Werner Schwertfeger
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Publication number: 20020143103Abstract: A vinylidene fluoride polymer having good high-temperature coloring resistance is produced through suspension polymerization at 10-100° C. in a mixture solvent of 100 wt. parts of an aqueous medium and 10-50 wt.Type: ApplicationFiled: January 25, 2002Publication date: October 3, 2002Inventors: Takumi Katsurao, Toshio Hosokawa, Katsuo Horie, Yoshikichi Teramoto, Aisaku Nagai
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Patent number: 6451717Abstract: The present invention comprises an aqueous emulsion for imparting oil and water repellency to textiles prepared by polymerizing a mixture of monomers (a), (b) and (c) as follows: (a) 70-90% polymer chain units derived from a mixture of monomers of the formula: Rf—Q—A—C(O)—C(R)═CH2 wherein Rf is a straight or branched-chain perfluoroalkyl group containing from 2 to about 20 carbon atoms; R is H or CH3; A is O, S, or N(R′); Q is alkylene of 1 to 15 carbon atoms, hydroxyalkylene of 3 to 15 carbon atoms, —(CnH2n)(OCqH2q)m—, —SO2—NR′(CnH2n)—, or —CONR′(CnH2n)—, wherein R′ is H or alkyl of 1 to about 4 carbon atoms, n is 1 to about 15, q is 2 to about 4, and m is 1 to about 15; (b) 5-25% monomer chain units derived from a long-chain alkyl (meth)acrylate of the formula: R″—O—C(O)—C(R)═CH2 wherein R″ is an alkyl group of about 12 to about 24 carbons and R is H or CH3; (cType: GrantFiled: December 14, 1999Date of Patent: September 17, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: John J. Fitzgerald, Melissa Ann Sherman
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Patent number: 6429258Abstract: Aqueous dispersion polymerization of fluoromonomers is improved by using a combination of fluorosurfactants, one of which is a perfluoropolyether carboxylic acid or salt.Type: GrantFiled: May 12, 2000Date of Patent: August 6, 2002Assignee: E. I. du Pont de Nemours & CompanyInventors: Richard Alan Morgan, Clay Woodward Jones, Theodore Arthur Treat, Jeffrey A. Hrivnak
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Patent number: 6395848Abstract: Aqueous dispersion polymerization of fluoromonomers is improved by using a combination of fluorosurfactants, one of which is a perfluoropolyether carboxylic acid or sulfonic acid or salt of either.Type: GrantFiled: November 2, 2000Date of Patent: May 28, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard Alan Morgan, Clay Woodward Jones, Theodore Treat, Jeffrey A. Hrivnak
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Patent number: 6383569Abstract: Calcitic and/or siliceous particulate materials are provided with increased resistance to penetration by water, oil or grease damage from water, oil or grease by a process which comprises treating said materials with an aqueous composition containing: (A) from about 0.1 to 4% by weight on a 100% solids basis of an aqueous solution or self-dispersed emulsion or dispersion of a copolymer which is a reaction product of monomers containing fluorinated groups, cationic groups and nonionic groups, optionally (B) an effective amount of a penetration assistant, and (C) water to make up 100%.Type: GrantFiled: February 13, 2001Date of Patent: May 7, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Ian Neal Ornstein, Geoffrey Charles Christ
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Patent number: 6376592Abstract: A water dispersion type water and oil repellent composition obtained by polymerizing the following polymerizable monomer mixture (b) in the presence of a compound (a) having a blocked isocyanate group and no polymerizable unsaturated group: (b) a mixture comprising a polymerizable monomer having a polyfluoroalkyl group and a polymerizable monomer having no polyfluoroalkyl group.Type: GrantFiled: August 12, 1999Date of Patent: April 23, 2002Assignee: Asahi Glass Company, Ltd.Inventors: Toyomichi Shimada, Takashige Maekawa
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Publication number: 20020040119Abstract: A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a hydrocarbon sulfonate anionic surfactant of the formula CH3—(CH2)n—SO3M, CH3—(CH2)n—C6H4—SO3M, or CH3—(CH2)n—CH═CHCH2—SO3M, where n is an integer from 6 to 17, or mixtures thereof, and M is a cation having a valence of 1, is used as the dispersing agent.Type: ApplicationFiled: July 18, 2001Publication date: April 4, 2002Inventor: Phan L. Tang
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Publication number: 20020037985Abstract: A novel emulsion polymerization process for the production of fluoroelastomers is disclosed wherein a partially fluorinated anionic surfactant of the formula F—(CF2CF2)n—CH2CH2SO3M, where n is an integer from 2 to 9, or mixtures thereof, and M is a cation having a valence of 1, is used as the dispersing agent.Type: ApplicationFiled: August 24, 2001Publication date: March 28, 2002Inventors: Donald F. Lyons, Albert L. Moore, Phan L. Tang, Antonio Vidal, J. F. Wehner
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Publication number: 20020037959Abstract: A thermoprocessable copolymer of TFE essentially formed by:Type: ApplicationFiled: September 26, 2001Publication date: March 28, 2002Applicant: Ausimont S.p.A.Inventors: Pasqua Colaianna, Giulio Brinati, Giambattista Besana
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Patent number: 6348516Abstract: Process for using microwave irradiation to prepare solutions of polymers functionalized with acid groups The invention relates to a process for preparing aqueous, hydrous and anhydrous solutions of polymers functionalized with acid groups, which comprises using microwave radiation to supply the heat required to prepare the solution. The solutions are suitable as a starting material for producing gas diffusion electrodes, fuel cells and polymer-electrolyte-stabilized platinum nanoparticles.Type: GrantFiled: July 6, 2000Date of Patent: February 19, 2002Assignee: Celanese Ventures GmbHInventors: Thomas Soczka-Guth, Helmut Witteler, Gregor Deckers, Georg Frank, Kilian Brehl, Jürgen Lenze, Harald Bönsel, Rüdiger Knauf
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Publication number: 20020016427Abstract: Tetrafluoroethylene (TFE) thermoprocessable copolymer microspheres having a substantially spherical shape for at least 95% by weight, the average size of the microspheres being in the range 25 &mgr;m and 2 mm, the bulk density being in the range 0.5 and 1.1 g/cm3.Type: ApplicationFiled: June 25, 2001Publication date: February 7, 2002Applicant: Ausimont S.p.A.Inventors: Hua Wu, Francesco Morandi
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Publication number: 20020013439Abstract: A polymerization process in microemulsion of:Type: ApplicationFiled: June 22, 2001Publication date: January 31, 2002Applicant: Ausimont S.p.A.Inventors: Marco Apostolo, Vincenzo Arcella
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Patent number: 6310142Abstract: Fluoropolymers comprising a fluoroelastomer matrix incorporating therein particles of a semicrystalline fluoropolymer containing iodine and/or bromine and formed of tetrafluoroethylene (TFE) homopolymers or copolymers wherein the average particle sizes of the semicrystalline fluoropolymer latex range from 10 to 100 nm.Type: GrantFiled: February 23, 2000Date of Patent: October 30, 2001Assignee: Ausimont S.P.A.Inventors: Marco Apostolo, Margherita Albano, Anna Staccione
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Patent number: 6306958Abstract: Aqueous dispersions comprising as component A) a compound containing two or more blocked isocyanate groups in the molecule and as component B) a compound obtainable by reacting a diepoxy compound with a diamine or polyamine and subsequently reacting the resulting reaction product with an acid and possibly as component C) a dispersant are suited together with fluorine containing oligomers or polymers for the oil-, water- and soil-repellent finishing of fiber materials.Type: GrantFiled: December 16, 1999Date of Patent: October 23, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Franz Dirschl, Franz Mosch, Wilhelm Artner, Edeltraud Schidek, Heinz Gaugenrieder, Simpert Lüdemann, Erich Rössler
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Patent number: 6288160Abstract: It is an object of the present invention to provide an aqueous dispersion and a waterproofing agent, which are of the aqueous one-component type and easy and simple to apply and have both a decorative effect and enough waterproofing effect. The aqueous dispersion of the present invention comprises an organosilicon compound (1) represented by the general formula (I): and a fluorine-containing resin (2) comprising an aqueous fluororesin dispersion, and the weight ratio, on the solid basis, between said organosilicon compound (1) and said fluorine-containing resin (2) is (organosilicon compound (1)):(fluorine-containing resin (2))=60:40 to 97:3.Type: GrantFiled: July 21, 1999Date of Patent: September 11, 2001Assignee: Daikin Industries, Ltd.Inventors: Susumu Wada, Katsuhiko Imoto, Kayoko Honda
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Publication number: 20010020063Abstract: Process for the preparation of a dispersion based on homopolymers/copolymers of tetrafluoroethylene (TFE), said dispersion having a bimodal or multimodal distribution of the particle diameters, wherein the fraction of small particles is in the range 1.5-359 by weight calculated on the dry product; the ratio between the average diameter of the small particles with respect to the average diameter of the dispersion obtained from the polymerization being in the range 0.02-0.Type: ApplicationFiled: February 22, 2001Publication date: September 6, 2001Applicant: Ausimont S.p.A.Inventors: Valery Kapeliouchko, Enrico Marchese
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Patent number: 6284853Abstract: The present invention provides a copolymer whose durability on cleaning is improved while maintaining good water- and oil-repellency. Disclosed is a copolymer having: (i) a fluoroalkyl group, (ii) a urethane or urea linkage, and (iii) a functional group selected from the group consisting of a carboxyl group, a carboxylic anhydride group, an epoxy group, a phosphoric group, an alkoxysilane group, a imine group, a sulfonic group, an amino group, an isocyanate group and a chlorine atom, and a stainproof agent containing the copolymer as an active component.Type: GrantFiled: January 29, 1998Date of Patent: September 4, 2001Assignee: Daikin Industries, Ltd.Inventors: Masayuki Yamana, Ikuo Yamamoto, Norihito Otsuki, Teruyuki Fukuda
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Patent number: 6255384Abstract: The present invention provides a novel, optionally surfactant-free process for controlling particle number, particle size, and/or particle size distribution. The method of the invention also significantly improves monomer to polymer conversion rates, as well as, increases the level of polymer solids which can be emulsified/dispersed in water without polymer flocculation. Specifically, the improved process provides an aqueous dispersion of up to about 48% polymer solids in water in the absence of surfactant. The resulting fluoropolymers dispersions may be used in resin and coating applications.Type: GrantFiled: January 20, 1998Date of Patent: July 3, 2001Assignee: AlliedSignal, Inc.Inventors: Thomas F. McCarthy, Yan Chen, Eric J. Rainal
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Patent number: 6225403Abstract: The present invention relates to a method and composition for treating textile fibers or substrates, to thereby impart oil, water and soil repellency at substantially reduced add on levels of fluorine containing resins based on weight of the textile fiber or substrate so treated.Type: GrantFiled: February 3, 1999Date of Patent: May 1, 2001Inventor: Barry R. Knowlton
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Patent number: 6218464Abstract: Disclosed is a method for preparing fluorinated emulsion polymers that reduces or eliminates the need for fluorinated surfactants comprising the steps of: a) providing a reaction mixture comprising water, surfactant, monomer mixture comprising at least one fluorinated monomer, at least one non-fluorinated monomer having high water solubility, and optionally at least one non-fluorinated monomer having low water solubility, macromolecular organic compound having a hydrophobic cavity; and b) polymerizing said monomer mixture.Type: GrantFiled: June 1, 1999Date of Patent: April 17, 2001Assignee: Rohm and Haas CompanyInventors: Hsing-Yeh Parker, Willie Lau, Erik S. Rosenlind
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Patent number: 6197382Abstract: Calcitic and/or siliceous architectural and construction materials are provided with increased resistance to damage from water, oil, grease and weather by a process which comprises treating said materials with an aqueous composition containing: (A) from about 0.1 to 4% by weight on a 100% solids basis of an aqueous solution or self-dispersed emulsion or dispersion of a copolymer which is a reaction product of monomers containing fluorinated groups, cationic groups and nonionic groups, (B) an effective amount of a penetration assistant, and (C) water to make up 100%.Type: GrantFiled: July 21, 1999Date of Patent: March 6, 2001Assignees: Ciba Specialty Chemicals Corp.Inventors: Ian Neal Ornstein, Geoffrey Charles Christ
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Patent number: 6156839Abstract: An aqueous microemulsion polymerization procedure is described in which very small colloidal polymer particles are produced from tetrafluoroethylene monomer. The polymerization procedure involves adding a free-radical initiator to a mixture of a microemulsion of at least one liquid saturated organic compound; and tetrafluoroalkyl ethylene.Type: GrantFiled: March 16, 1999Date of Patent: December 5, 2000Assignee: W. L. Gore & Associates, Inc.Inventors: Huey Shen Wu, Jack Hegenbarth, Xin Kang Chen, Jian Guo Chen
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Patent number: 6153675Abstract: A water-dispersible, water- and oil-repellent agent, which comprises an aqueous emulsion comprising a copolymer of a fluoroalkyl group-containing monomer with vinylidene chloride or benzyl (meth)acrylate and a carboxyl group-containing, water-soluble polymer, dispersed in water by a nonionic surfactant, preferably the carboxyl group-containing, water-soluble polymer is used together with a sugar alcohol, contains no organic solvent and has a distinguished freeze-thaw stability.Type: GrantFiled: August 13, 1998Date of Patent: November 28, 2000Assignee: Nippon Mektron, LimitedInventors: Kazuhiro Yamamoto, Yuzuru Ishida
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Patent number: 6153681Abstract: Compositions which act as thermoplastic elastomers are disclosed which have an elastomeric polymer portion and a crystalline polymer portion. Also disclosed is the manufacture of thermoplastic elastomers from tetrafluoroethylene, and selected trifluorovinyl alkyl ethers (and optionally other monomers) by using a free radical polymerization in aqueous medium to produce an elastomeric copolymer of tetrafluoroethylene and one or more selected trifluorovinyl alkyl ethers, and thereafter using a free radical polymerization to form a fluorinated crystalline polymer portion. The fluorinated thermoplastic elastomer has excellent physical properties and may be used to make molding such as gaskets and seals.Type: GrantFiled: July 8, 1998Date of Patent: November 28, 2000Assignee: E. I. du Pont de Nemours and CompanyInventor: Paul G. Bekiarian
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Patent number: 6133373Abstract: A water-borne fluoroelastomer composition comprising an aqueous dispersion of a fluoroelastomer polymer, from about 2 to about 30 parts by weight per one hundred parts by weight of polymer of a curative system, said curative system having been formed by blending from about 6 to about 94 parts by weight of a stabilized siloxane and from about 94 to about 6 parts by weight of a non-stabilized silane, where said stabilized siloxane and said non-stabilized silane total about one hundred parts by weight of the curative system, from 0 to about 40 parts by weight of an additive filler per one hundred parts by weight of polymer, and sufficient water to provide a composition having a solids content of from about 10 to about 80 percent by weight of the total composition.Type: GrantFiled: December 21, 1998Date of Patent: October 17, 2000Assignee: Lauren International, Inc.Inventors: Pavel Kirochko, James G. Kreiner