Leather Or Fur Treating (other Than Cleaning Compositions Or Auxiliary Compositions For Cleaning) Patents (Class 252/8.57)
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Publication number: 20080265201Abstract: Low-temperature-curable polyurethane compositions with uretdione groups, containing polymers based on polyols that carry secondary OH groups.Type: ApplicationFiled: May 3, 2007Publication date: October 30, 2008Applicant: DEGUSSA GmbHInventors: Emmanouil Spyrou, Corey King, Werner Grenda, Christoph Lammers, Rainer Lomolder
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Patent number: 7416601Abstract: Black perylene pigments which comprise one of the isomers of the formula Ia or Ib in which R1, R2 are each independently phenylene, naphthylene or pyridylene, each of which may be mono- or polysubstituted by C1-C12-alkyl, C1-C6-alkoxy, hydroxyl, nitro, and/or halogen; X is halogen; n Is from 0 to 4, or comprises a mixture of both isomers and has a blackness value ?210 in an alkyd/melamine baking varnish.Type: GrantFiled: February 4, 2005Date of Patent: August 26, 2008Assignee: BASF AktiengesellschaftInventors: Peter Erk, Andreas Stohr, Arno Boehm, Walter Kurtz, Jin Mizuguchi, Benno Sens
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Patent number: 7381250Abstract: The present invention provides a liquid protectant composition composed of a cationic microemulsion of a natural wax (carnauba wax) nanometer sized particles and zinc oxide nanometer sized particles in combination with a quaternary siloxane compound. The protectant composition of the present invention cleans, protects preserves and enhances the appearances of leather or vinyl surfaces used for covering items in the home or in vehicles. The product is easy to apply to both smooth and textured surfaces and has a transparent appearance. The product dries quickly and does not leave an oily residue. Utilization of nano technology to select components having nano sized particles provides a uniform deposition of the product leaving a thin film having exceptional protection properties. Unlike conventional protectants, the invention of the instant composition dries quickly and leaves no oily residue behind.Type: GrantFiled: December 15, 2006Date of Patent: June 3, 2008Assignee: Ashland Licensing and Intellectual Property, LLC (ALIP)Inventors: Hida Hasinovic, Tara Weinmann
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Publication number: 20080121835Abstract: Process for waterproofing a semimanufactured product (3) of footwear, gloves, clothing items and accessories, said semimanufactured product (3) having a three-dimensional conformation with at least one inner surface and one outer surface, characterized in that it comprises the following operative steps: —arranging on a shaped support (1, 1a, 1b) the semimanufactured product (3) with at least one waterproofing sheath (4) shaped for entirely or partially cover the surfaces to be waterproofed of the semimanufactured product (3), at least one glue layer being applied between these surfaces and the waterproofing sheath (4); —sealing the semimanufactured product (3) and/or the waterproofing sheath (4) for preventing the transfer of fluids from the outside between the sheath (4) and the shaped support (1, 1a, 1b); —inserting the shaped support (1, 1a, 1b) provided with the semimanufactured product (3) and with the sheath (4) into an autoclave (7) for joining under pressure the sheath (4) to the semimanufactured prodType: ApplicationFiled: March 7, 2006Publication date: May 29, 2008Applicant: NEXTEC S.R.L.Inventor: Matteo Morlacchi
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Patent number: 7378032Abstract: A paint composition for leather comprising a fluorine-containing resin and a silicone oil, and a paint composition for leather comprising a curable fluorine-containing resin, a curing agent and a silicone oil can have both soft feeling of a leather itself and film properties such as soil resistance and abrasion resistance.Type: GrantFiled: December 18, 2003Date of Patent: May 27, 2008Assignee: Daikin Industries, Ltd.Inventors: Akihiko Ueda, Masahiko Maeda
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Patent number: 7354457Abstract: Tanning agents can be prepared by reacting at least one aldehyde of formula I, with at least one further identical or different aldehyde of formula I, where Z is a single chemical bond, unsubstituted or substituted C1-C12-alkylene, unsubstituted or substituted C5-C12-cycloalkylene or unsubstituted or substituted C6-C14-arylene, the reaction being carried out in the presence of an acidic catalyst and in the presence of at least one further carbonyl compound of formula II where R1 to R4, independently of one another, are hydrogen, unsubstituted or substituted C1-C12-alkyl, unsubstituted or substituted C3-C12-cycloalkyl, unsubstituted or substituted C7-C13-aralkyl or unsubstituted or substituted C6-C14-aryl, with the proviso that, where Z is a single chemical bond or a radical without a-hydrogen atoms, at least one further aldehyde of the formula I, in which Z contains ?-hydrogen atoms, or at least one further carbonyl compound of formula II is present.Type: GrantFiled: May 2, 2003Date of Patent: April 8, 2008Assignee: BASF AktiengesellschaftInventors: Stephan Hueffer, Gunther Pabst, Tilman Luedecke Taeger, Stefan Schroeder, Gerhard Wolf
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Patent number: 7300599Abstract: Fatliquoring agents for the production and/or for the treatment of leather comprising (A) at least one natural lipoid; (B) at least one polymer based on the monomers acrylic acid and/or methacrylic acid; (C) an emulsifier composition containing a C6- to C17-alkanol alkoxylated with up to 12 alkylene oxide units or a mixture of two or more such alkanols and a C12- to C24-fatty alcohol mixture alkoxylated with at least 15 alkylene oxide units.Type: GrantFiled: May 5, 2004Date of Patent: November 27, 2007Assignee: BASF AktiengesellschaftInventors: Ralph Lunkwitz, Andreas Seitz
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Patent number: 7229486Abstract: The invention provides a water-based low VOC shoe and leather care product having good product properties and characteristics, which can be formulated by making an appropriate and careful selection of ingredients and their amounts. A shoe and leather care product according to the invention has been found to give results in the treatment of leather (shoes) closely resembling the results found when using a conventional, high VOC shoe care product. Furthermore, such favourable results can be achieved while significantly reducing the amount of organic solvents in the product.Type: GrantFiled: April 15, 2004Date of Patent: June 12, 2007Assignee: SaraLee/DE N.V.Inventors: Pieter-Jan Wiersema, Wilhelmus Franciscus Petrus Maria Boonman, Shengyu Jin
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Patent number: 7208016Abstract: Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338 , of at least 30 min.Type: GrantFiled: March 3, 2006Date of Patent: April 24, 2007Assignee: Lanxess Deutschland GmbHInventors: Martin Kleban, Ahmet Kaplan, Jürgen Reiners, Henrik Winther
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Patent number: 7201854Abstract: The present application relates to the use of active compound combinations containing phenolic active compounds and fungicidal active compounds for preserving animal hides and leather.Type: GrantFiled: September 13, 2001Date of Patent: April 10, 2007Assignee: Bayer AktiengesellschaftInventors: Heinz-Joachim Rother, Hartmut Rehbein, Martin Kugler
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Patent number: 7192534Abstract: Agents for the fatliquoring of, in particular, leathers and hides tanned in the absence of chromium comprise A) at least one modified natural oil and B) at least one stabilizer LnR where Ra is H or methyl, Rb is methyl, ethyl or tert-butyl, Rc is methyl, tert-butyl, cyclohexyl or methylcyclohexyl, R is an n-valent C3- to C30-hydrocarbon radical which is unsubstituted or substituted and/or contains hetero atoms and n is an integer from 1 to 10, the stabilizer LnR having altogether at least 20, in particular altogether at least 28, carbon atoms, and, where n is 2, —R— also being —S—, —O—, —N(H)—, —CH2—, —(CH2)2—, —CH(CH3)—, —CH2)3—, —CH(C2H5)— or —C(CH3)2—. The novel fatliquoring agents are used in leather production and/or leather treatment, and leather is produced and/or treated using aqueous dispersions of these fatliquoring agents.Type: GrantFiled: February 20, 2003Date of Patent: March 20, 2007Assignee: BASF AktiengesellschaftInventors: Ralph Lunkwitz, Andreas Seitz, Gunther Pabst
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Patent number: 7166235Abstract: Disclosed are compositions and methods for treating and modifying surfaces and for enhancing delivery of active agents to surfaces treated therewith, wherein the compositions comprise siloxane polymers functionalized with pendant moieties comprising two or more anionic groups, at least one anionic group being a carboxy group. When applied to a suitable surface, the present composition forms a substantially hydrophobic coating of the anionic functionalized siloxane polymer on the treated surface. These polymers effectively deposit on surfaces that have cationic sites, which are capable of forming bonds or linkages with the anionic groups of the polymer. The treated surface becomes hydrophobic due to the deposition of the anionic functionalized siloxane polymer, which then imparts a variety of end use benefits to that surface such as ease of cleaning, soil release, stain removal and prevention, conditioning, etc.Type: GrantFiled: May 6, 2003Date of Patent: January 23, 2007Assignee: The Procter & Gamble CompanyInventors: Satyanarayana Majeti, Elizabeth Ann Brown Reno, Stephen Andras Kovacs
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Patent number: 7160480Abstract: A method of treating leather for imparting soil resistance to the leather by contacting the leather with a fluorinated hydrophobic additive comprising at least one fluorinated urethane or a mixture of at least one fluorinated urethane with at least one fluorinated ester, and the resulting treated leather having soil resistance are disclosed.Type: GrantFiled: February 22, 2005Date of Patent: January 9, 2007Assignee: E. I. du Pont de Nemours and CompanyInventors: Andrew Hen Liu, Kai-Volker Schubert
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Patent number: 7157017Abstract: The invention relates to control fungal growth on tanned hides, using cyanodithiocarbimates of formula (I): X is a halogen; R is a substituted or unsubstituted C1–C14 alkyl group, a substituted or unsubstituted C2–C14 alkenyl group, a substituted or unsubstituted C2–C14 alkynyl group, a substituted or unsubstituted group defined by Y—Ar—(CH2)m— or by Z—(CH2)n—; Ar is a substituted or unsubstituted aryl group selected from phenyl, or naphthyl; Y is H, halogen, NO2, R1, R1O, R1R2N; Z is NC, R1O, R1OC(O), R1OCH2CH2(OCH2CH2)p m ranges from 0 to 3; n ranges from 0 to 3; p ranges from 0 to 3; and R1 and R2 are independently H, substituted or unsubstituted C1–C5 alkyl.Type: GrantFiled: November 26, 2003Date of Patent: January 2, 2007Assignee: Buckman Laboratories International, Inc.Inventors: Joseph G. E. Fenyes, Thomas E. McNeel, Stephen D. Bryant, Marilyn S. Whittemore, Zoltan G. Csuros, Mark L. Zollinger, Robert H. Miller, Naim B. Miguel
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Patent number: 7118603Abstract: A process for the preparation of a synthetic tanning agent is disclosed whereby multi functional polymer is polymerized with sulfonated aromatic compound, pretreated with organic ligand to form an organo-polymeric matrix, which is essentially formaldehyde-free. The product has potential application in leather industry as an eco-friendly approach to chrome tanning by eliminating the conventional pickling process and the related problem of total dissolved solids (TDS) associated with the effluent. The present invention also provides for an exhaust aid for chrome due to its multiple carboxyl groups.Type: GrantFiled: July 14, 2003Date of Patent: October 10, 2006Assignee: Council of Scientific and Industrial ResearchInventors: Mookandi Kanthimathi, Palanisamy Thanikaivelan, Jonnalagadda Rao, Balachandran Unni Nair, Thirumalachari Ramasami
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Patent number: 7060363Abstract: Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338, of at least 30 min.Type: GrantFiled: October 27, 2003Date of Patent: June 13, 2006Assignee: Bayer AktiengesellschaftInventors: Martin Kleban, Ahmet Kaplan, Jürgen Reiners, Henrik Winther
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Patent number: 7056449Abstract: An aqueous silica dispersion containing silica particles dispersed in an aqueous medium is provided. The surfaces of the silica particles are treated with reacted aminosilane compound. The aqueous silica dispersion also contains anionic polymeric dispersing agent. The dispersion of the silica particles into an aqueous medium containing both anionic polymeric dispersing agent and aminosilane compound allows the preparation of aqueous silica dispersions at higher solids and/or low viscosities than aqueous silica dispersions that are prepared without either the anionic polymeric dispersing agent or the aminosilane compound. The aqueous silica dispersion is combinable with aqueous emulsion polymers to modify the physical or appearance properties of articles formed from the emulsion polymer.Type: GrantFiled: August 4, 2003Date of Patent: June 6, 2006Assignee: Rohm and Haas CompanyInventor: Joseph Michael Hoefler
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Patent number: 6989056Abstract: The present invention relates to IR reflective black pigment compositions comprising a halogenated copper phthalocyanine such as C.I. Pigment Green 7 and a perylenetetracarboxylic acid diimide such as C.I. Pigment Violet 29. The compositions are characterized by an IR reflection spectrum with a positive slope in the wavelength range between 800 and 900 nm when incorporated as coloring agents in coatings or plastics. The inventive IR reflective black pigment compositions are useful for coloring high molecular weight materials like coatings, inks and plastics.Type: GrantFiled: September 20, 2004Date of Patent: January 24, 2006Assignee: Ciba Specialty Chemicals CorporationInventor: Fridolin Bäbler
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Patent number: 6936735Abstract: Compounds of Formula I: wherein R, R1 and R2 are each independently hydrogen or linear or branched C1 to C10 alkyl, or linear or branched C1 to C10 alkoxy; R3 is selected from the group consisting of COCH3, CO2R7, CONH2, CON(R8)2, CN, COX(CH2)n-N—(R4)(R5)(R6), and the quaternized salt form of the formula COX(CH2)n-N—(R4)(R5)(R6)+Y?; X is O or NH; n is an integer of 1 to 5; Y is an anion; R4, R5 and R6 are independently linear or branched C1 to C30 alkyl; and R7 and R8 are independently hydrogen or linear or branched C1-C30 alkyl. Sunscreen formulations containing compounds of Formula I, and methods for protecting hair, skin and substrates such as polymers, textiles, fabrics, leathers and paints using the compounds herein.Type: GrantFiled: August 27, 2002Date of Patent: August 30, 2005Assignee: EMD Chemicals, Inc.Inventor: Ratan K. Chaudhuri
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Patent number: 6872324Abstract: 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: GrantFiled: January 30, 2003Date of Patent: March 29, 2005Assignee: Asahi Glass Company, LimitedInventors: Takashige Maekawa, Minako Shimada, Ryuji Seki, Taiki Hoshino
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Patent number: 6849095Abstract: Described are a composition and process for the enzymatic tanning of hides utilizing one or more transglutaminases for crosslinking the collagen in the hide.Type: GrantFiled: July 3, 2001Date of Patent: February 1, 2005Assignee: Trumpler GmbH & Co. Chemische FabrikInventors: Thomas Feigel, Manfred Palissa, Ralf Pasternack, Hans-Lothar Fuchsbauer, Heinz-Peter Germann, Michael Meyer
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Publication number: 20040245490Abstract: A top coating composition for leather comprisesType: ApplicationFiled: March 9, 2004Publication date: December 9, 2004Inventors: Holger Schopke, Stefan Adams, Helfried Scheidl
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Publication number: 20040241467Abstract: An aqueous leather treatment composition is provided containing select soft polymer particles and water-filled voided particles. Also provided are a method for preparing an embossed coated leather substrate, which includes the application of the aqueous leather treatment composition, as well as an article prepared from the embossed coated leather substrate.Type: ApplicationFiled: June 1, 2004Publication date: December 2, 2004Inventors: Frederick J. Schindler, Edwin H. Nungesser
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Publication number: 20040232376Abstract: Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338, of at least 30 min.Type: ApplicationFiled: October 27, 2003Publication date: November 25, 2004Inventors: Martin Kleban, Ahmet Kaplan, Jurgen Reiners, Henrik Winther
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Publication number: 20040155220Abstract: The invention relates to linear carboxy-functional organosiloxane compounds of the general formula (I) 1Type: ApplicationFiled: February 2, 2004Publication date: August 12, 2004Inventors: Heike Buskies, Manfred Krakenberg, Sascha Oestreich, Stefan Stadtmuller
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Patent number: 6753369Abstract: The present invention relates to novel formulations for water proofing leather, a process for waterproofing leather, and leather goods waterproofed by the formulations and processes of the present invention. More specifically, the present invention relates to the use of a composition containing a salt of polyalkyl carboxylic acid anhydride, an aliphatic carboxylic acid amide, a fatty alcohol or blend of fatty alcohols, an alcohol cosolvent, a preservative, and water for imparting improved hydrophobicity, flexibility, and/or product feel of the finished leather goods.Type: GrantFiled: October 16, 2001Date of Patent: June 22, 2004Assignee: Buckman Laboratories International, Inc.Inventors: Walter Bernard Hill, Jr., Naim Barcellos Miguel
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Publication number: 20040109947Abstract: The present invention is related to the production of coatings utilizing a fluorine-containing polymer having hydroxyl and/or carboxyl groups that are cured with an amino resin to produce “soft hand” low gloss coatings for vinyl, urethane, leather, and other flexible plastic substrates. A method for increasing the stain resistance of a flexible substrate comprises providing a fluorine-containing ethylene-based copolymer containing fluorine atoms in the main chain of the polymer and pendent reactive groups selected from the group consisting of carboxyl groups, hydroxyl groups and combinations thereof; providing an amino resin; mixing the copolymer and the amino resin; applying the mixed copolymer and amino resin to a flexible substrate; and curing the mixed copolymer and amino resin to provide a coated substrate having a soft hand wherein the stain resistance of said coated substrate is improved over that of the uncoated substrate.Type: ApplicationFiled: December 9, 2002Publication date: June 10, 2004Inventors: Raymond J. Weinert, Pamela Cadile, Haruhiko Mohri, Katsuhiko Imoto
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Patent number: 6689870Abstract: Protein macromolecular dyes, A(B)b are disclosed, wherein A are protein macromolecules including natural protein macromolecules and modified natural protein macromolecules such as casein, gelatin and fur-protein; B are dyes including azo dyes, azo metal complex dyes and anthraquinone dyes which can react with the amino groups of the natural and modified protein macromolecules; b are integers between 1˜2500. The protein macromolecular dyes have excellent properties of crosslinking ability, better dyeing fastness, fixation ration than conventional dyes and the function of normal macromolecules such as compatibility, abilities of filling and forming membranes. They may be used in dyeing protein materials such as leather, wool and silk.Type: GrantFiled: July 16, 1998Date of Patent: February 10, 2004Assignees: China Petro-Chemical Corporation, Dalian University of TechnologyInventors: Jinzong Yang, Shufen Zhang
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Patent number: 6491838Abstract: An organosiloxane which has at least one triamino group of formula I: [NHx(CH2)aNHy(CH2)bNHz]— (I) which is bonded to at least one silicon atom via at least one N-bonded alkylene group having 1 to 4 C atoms, a and b are identical or different and are each an integer ranging from 1 to 6, x is 0 or 1 or 2, y is 0 or 1, z is 0 or 1 or 2, with the proviso that (x+y+z)≦4, and at least one Si—C-bonded fluoroalkyl group of formula II: F3C(CF2)r(CH2)s— (II) wherein r is 0 or an integer ranging from 1 to 18 and s is 0 or 2.Type: GrantFiled: November 15, 2000Date of Patent: December 10, 2002Assignee: Degussa AGInventors: Burkhard Standke, Michael Horn, Peter Jenkner, Jaroslaw Monkiewicz
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Patent number: 6491745Abstract: The object is to provide a water/oil repellent composition which can simultaneously perform a water/oil treatment and a polishing treatment to leather products such as leather shoes, etc., by using one water/oil repellent composition, and can also exert excellent water/oil repellent effect and excellent polishing effect. It is constituted so that microcapsules, in which a polishing agent is encapsulated, are dispersed in a water/oil repellent agent.Type: GrantFiled: November 9, 2000Date of Patent: December 10, 2002Assignee: 3M Innovative Properties CompanyInventor: Masahiro Ashizawa
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Patent number: 6482483Abstract: A composition comprising tris(hydroxymethyl)phosphine or phosphorus-containing salts or condensates of those salts with nitrogen-containing compounds coated or absorbed onto a solid or porous substrate is disclosed. The salts or condensates are based on tetrakis(hydroxymethyl)phosphonium salts. The substrate has a melting point greater than 70° C. and is an optionally hydroxyl-substituted di- or polycarboxylic acid. The compositions may be used with water soluble film forming polymers to make sachets or bags containing sachets or bags of these phosphorous-containing compositions along with sachets or bags of compositions that are incompatible with these phosphorous-containing compositions.Type: GrantFiled: April 3, 2000Date of Patent: November 19, 2002Assignee: Rhodia Consumer Specialties LimitedInventors: Stephen David Fidoe, Christopher David Imrie, Christopher Raymond Jones, Robert Eric Talbot
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Patent number: 6478866Abstract: Aqueous pigment preparations containing a) at least one pigment, b) at least one condensation product based on A) suphonated aromatics, B) aldehydes and/or ketones and optionally C) one or several compounds selected from the group of non sulphonated aromatics, urea and urea derivatives, and c) at least one polyether polyol with a boiling point of above 150° C., at normal pressure. The inventive preparations are highly suitable for pigmenting natural or synthetic materials.Type: GrantFiled: August 14, 2000Date of Patent: November 12, 2002Assignee: Bayer AktiengesellschaftInventors: Peter Roger Nyssen, Wolfgang Zarges, Achim Brand, Thomas Roick, Hans Peter Geiger
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Patent number: 6471885Abstract: An aqueous leather coating composition containing a multi-stage emulsion polymer having a stage of Tg<10° C. which contains a copolymerized carboxylic acid and which has been contacted with a divalent metal oxide, hydroxide, or carbonate and a polymer stage of Tg>20° C. which has been prepared in the presence of 1% to 15% by weight based on the weight of that stage of chain transfer agent is provided. Also, provided is a method for coating leather with the composition of this invention.Type: GrantFiled: April 27, 2001Date of Patent: October 29, 2002Assignee: Rohm and Haas CompanyInventors: Jin-chih Chiang, Shang-Jaw Chiou, Frederick James Schindler
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Patent number: 6451062Abstract: The invention relates to an improved hide-curing additive comprising an effective biocidal amount of an essential oil and a non-ionic surfactant. The improved additive provides an effective cure for the hides, is environmentally safe and economical.Type: GrantFiled: September 23, 1998Date of Patent: September 17, 2002Assignee: Birko CorporationInventors: Dana J. Johnson, Terry L. McAninch, Frederick W. Holzhauer
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Patent number: 6447588Abstract: A water dispersion type water and oil repellent composition which undergoes little change in viscosity even if freezing/thawing cycles are repeated and which is excellent in storage stability. The dispersion is capable of imparting excellent water and oil resistance to paper. A water dispersion type water and oil repellant composition contains a compound which is mixable with water and has a flash point of from 50 to 150° C. A polyfluoroalkyl group-containing phosphate may be incorporated into the mixture.Type: GrantFiled: December 28, 2000Date of Patent: September 10, 2002Assignee: Asahi Glass Company, LimitedInventors: Hiroshi Funaki, Ryuji Seki
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Patent number: 6440321Abstract: A fluorochemical composition to impart water repellency and/or oil repellency to a substrate, the composition comprising one or more condensates of (i) a methylolated amine or a C1-C4 alkoxylated derivative thereof, (ii) a hydrocarbon compound represented by formula (II) and (iii) a fluorinated compound represented by formula (I): Rf—(X1)n—Z1 (I) wherein: Rf is a fluorinated aliphatic group; X1 is an organic divalent linking group; Z1 is selected from the group consisting of hydroxy, thiol, amide or acid groups; and n is 0 or 1; and Rh—Z2 (II) wherein: Rh is a hydrocarbon group having at least 6 carbon atoms and optionally being substituted with 1 to 3 subsituents; Z2 is selected from the group consisting of hydroxy, thiol, amide or acid groups. The invention further provides a method of treatment of a substrate with the fluorochemical composition and a treated substrate.Type: GrantFiled: September 17, 1999Date of Patent: August 27, 2002Assignee: 3M Innovative Properties CompanyInventors: Frans A. Audenaert, Dirk M. Coppens, Rudolf J. Dams
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Publication number: 20020066879Abstract: The present application relates to the use of active compound combinations containing phenolic active compounds and fungicidal active compounds for preserving animal hides and leather.Type: ApplicationFiled: September 13, 2001Publication date: June 6, 2002Inventors: Heinz-Joachim Rother, Hartmut Rehbein, Martin Kugler
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Patent number: 6391189Abstract: The present specification relates to wax blends comprising partial esters of polyols and montan wax acid, hydrocarbon wax, long-chain carboxylic acids and long-chain alcohols and to their use. With such blends it is possible, without water-soluble emulsifier and permanent soaps, to produce aqueous pastes which can be applied in use to leather surfaces to give water-resistant, non-tacky, elastic films without gray break. The drying times are shorter than with the known formulations, and the dried coat applied can easily be polished to highly glossy films.Type: GrantFiled: September 8, 2000Date of Patent: May 21, 2002Assignee: Clariant GmbHInventor: Franz-Leo Heinrichs
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Patent number: 6387291Abstract: An aqueous leather coating composition and a method for coating leather with the aqueous coating composition are provided. The aqueous coating composition contains an aqueous emulsion polymer which includes from 0.4% to 10% by weight of a copolymerized acetoacetate or acetoacetamide monomer and has a glass transition temperature from −20° C. to 10° C. In an alternative embodiment the aqueous coating composition contains an aqueous emulsion polymer which includes from 0.1% to 6% by weight of a copolymerized acetoacetate or acetoacetamide monomer and from 2% to 15% by weight of copolymerized carboxylic acid monomer and has a glass transition temperature from −40° C. to 0° C., the polymer having been contacted with a transition metal oxide, hydroxide, or carbonate at a pH less than 9 in an amount greater than 0.20 equivalent of transition metal per equivalent of copolymerized carboxylic acid monomer.Type: GrantFiled: May 31, 2001Date of Patent: May 14, 2002Assignee: Rohm and Haas CompanyInventors: Patricia Marie Lesko, Frederick James Schindler
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Patent number: 6375861Abstract: The present application relates to the use of combinations of active compounds composed of phenolic active compounds and azole compounds for the preservation of animal hides and leather.Type: GrantFiled: May 11, 2000Date of Patent: April 23, 2002Assignee: Bayer AktiengesellschaftInventors: Heinz-Joachim Rother, Martin Kugler, Hartmut Rehbein
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Publication number: 20020033468Abstract: The present invention comprises a composition for coating synthetic grain leather having both dynamic water repellency and oil repellency comprising a copolymer or blend of copolymers and a polyurethane resin in solvent.Type: ApplicationFiled: October 4, 2001Publication date: March 21, 2002Inventor: Hsu-Nan Huang
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Patent number: 6358431Abstract: A method of imparting a water repellent surface to a hydrophilic substrate which comprises contacting the substrate with a solution or dispersion of a suitable calixarene in a liquid medium.Type: GrantFiled: February 24, 1999Date of Patent: March 19, 2002Assignee: The University of SheffieldInventors: Charles James Matthew Stirling, Frank Davis
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Patent number: 6322717Abstract: A processing method of a leather material having grains thereon is disclosed. The processing method of the leather material includes: the first step of sammying a tanned leather material by hand; the second step of moistening the leather material; and third step of partially heating the leather material from the back to create grains thereon. The leather material may be folded at the position where the grains are created so that a relatively large convexity is formed. The invention also discloses a leather material thus processed as well as a leather product produced by using the leather material thus processed.Type: GrantFiled: June 14, 1999Date of Patent: November 27, 2001Inventor: Keiko Murakami
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Patent number: 6315822Abstract: A water and oil repellent composition comprising, as essential components, a phosphate of the following formula 1, a nonionic surfactant made of a compound containing at least one carbon-carbon triple bond and at least one hydroxyl group in its molecule and an aqueous medium: (Rf—Q—O—)mPO(OH)n(O−)3−m−n.(Y+)3−m−n Formula 1 wherein Rf is a polyfluoroalkyl group, Q is a bivalent organic group, Y+ is a monovalent counter ion, m is an integer of from 1 to 3, and n is an integer of from 0 to 2, provided that (m+n) is 1, 2 or 3.Type: GrantFiled: November 5, 1999Date of Patent: November 13, 2001Assignee: Asahi Glass Company Ltd.Inventors: Kazuya Oharu, Minako Shindo
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Publication number: 20010038085Abstract: An aqueous leather coating composition and a method for coating leather with the aqueous coating composition are provided. The aqueous coating composition contains an aqueous emulsion polymer which includes from 0.4% to 10% by weight of a copolymerized acetoacetate or acetoacetamide monomer and has a glass transition temperature from −20° C. to 10° C. In an alternative embodiment the aqueous coating composition contains an aqueous emulsion polymer which includes from 0.1% to 6% by weight of a copolymerized acetoacetate or acetoacetamide monomer and from 2% to 15% by weight of copolymerized carboxylic acid monomer and has a glass transition temperature from −40° C. to 0° C., the polymer having been contacted with a transition metal oxide, hydroxide, or carbonate at a pH less than 9 in an amount greater than 0.20 equivalent of transition metal per equivalent of copolymerized carboxylic acid monomer.Type: ApplicationFiled: May 31, 2001Publication date: November 8, 2001Inventors: Patricia Marie Lesko, Frederick James Schindler
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Patent number: 6294103Abstract: The present invention provides an amphiphilic copolymer comprising recurring units (I) and (II), wherein: Rf represents a fluorinated alkyl group having at least 3 carbon atoms; Q and Q′ each independently represents an organic liking group or a chemical linkage; R1 and R2 each independently represents hydrogen or a C1 to C4 alkyl group; and Rh represents a hydrocarbon group having at least 8 carbon atoms and optionally containing 1 to 3 substituents; and a recurring unit comprising at least one carboxylic acid group or salt thereof. The present invention also provides a method for making the above amphiphilic copolymer. The amphiphilic copolymer can be used in a leather treatment to provide waterproofness to the leather.Type: GrantFiled: May 4, 1999Date of Patent: September 25, 2001Assignee: 3M Innovative Properties CompanyInventor: Dirk M. Coppens
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Patent number: 6290866Abstract: An aqueous leather coating composition and a method for coating leather with the aqueous coating composition are provided. The aqueous coating composition contains an aqueous emulsion polymer which includes from 0.4% to 10% by weight of a copolymerized acetoacetate or acetoacetamide monomer and has a glass transition temperature from −20° C. to 10° C. In an alternative embodiment the aqueous coating composition contains an aqueous emulsion polymer which includes from 0.1% to 6% by weight of a copolymerized acetoacetate or acetoacetamide monomer and from 2% to 15% by weight of copolymerized carboxylic acid monomer and has a glass transition temperature from −40° C. to 0° C., the polymer having been contacted with a transition metal oxide, hydroxide, or carbonate at a pH less than 9 in an amount greater than 0.20 equivalent of transition metal per equivalent of copolymerized carboxylic acid monomer.Type: GrantFiled: January 10, 2000Date of Patent: September 18, 2001Assignee: Rohm and Haas CompanyInventors: Patricia Marie Lesko, Frederick James Schindler
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Patent number: 6251414Abstract: There is disclosed an aqueous formulation for pretanning leather, which formulation comprises (a) a reductive saccharide having a dextrose equivalent of 10 to 100, and (b) an aliphatic dialdehyde containing 2 to 8 carbon atoms, and which is devoid of mineral salts. The leather treated with the novel aqueous composition (wet white leather) is eminently suitable for further processing, especially for the manufacture of leathers which are devoid of heavy metals.Type: GrantFiled: October 30, 1998Date of Patent: June 26, 2001Assignee: TFL Ledertechnik GmbH & Co. KGInventors: Alain Lauton, Markus Hess, Günter Streicher, Alois Püntener
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Publication number: 20010001479Abstract: The invention relates to an improved hide-curing additive comprising an effective biocidal amount of an essential oil and a non-ionic surfactant. The improved additive provides an effective cure for the hides, is environmentally safe and economical.Type: ApplicationFiled: September 23, 1998Publication date: May 24, 2001Applicant: Dana J. JohnsonInventors: DANA J. JOHNSON, TERRY L. MCANINCH, FREDERICK W. HOLZHAUER
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Patent number: 6200640Abstract: Aqueous solutions or dispersions of copolymers obtainable by free-radical copolymerization of (a) from 20 to 90% by weight of at least one monoethylenically unsaturated C4-6-dicarboxylic acid or the anhydride thereof, as component A, (b) from 5 to 50% by weight of at least one olefin having 2 to 6 carbon atoms, as component B, (c) from 5 to 50% by weight of at least one hydrophobic comonomer from the group consisting of long-chain olefins, esters of long-chain alcohols with acrylic acid or methacrylic acid, long-chain amides of acrylic acid or methacrylic acid, and long-chain alkyl vinyl ethers, as component C, (d) from 0 to 40% by weight of further comonomers which can be copolymerized with the above monomers, as component D, where the sum of the amounts of components A, B, C and, if used, D is 100% by weight, followed by at least partial esterification or hydrolysis and neutralization and/or reaction of the carboxyl groups formed during the hydrolysis with bases, for treating leather and/or fur skins.Type: GrantFiled: November 9, 1998Date of Patent: March 13, 2001Assignee: BASF AktiengesellschaftInventors: Michael Kneip, Axel Kistenmacher, Peter Danisch, Gerhard Wolf