With Aldehyde-aromatic Condensation Product Patents (Class 8/94.24)
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Patent number: 9212403Abstract: Provided is a natural leather having a novel coating layer which feels leathery. The coating film retains material properties such as strength and wearing resistance. When the user directly touches the natural leather, the coating layer present on the surface of the natural leather gives slick characteristics of natural leathers and smoothness. The natural leather has a coating film formed on a surface thereof, the coating film including: a color coat layer formed from a mixture of a hard component (10% modulus is more than 2.3 but no more than 3.0) and a soft component (10% modulus is more than 0.0 but no more than 1.0) of a two-component polyurethane resin; and a topcoat layer formed from a mixture of a medium component (resin having a 10% modulus of more than 1.0 but no more than 2.3) and a soft component (resin having a 10% modulus of more than 0.0 but no more than 1.0) of a two-component polyurethane resin.Type: GrantFiled: May 15, 2009Date of Patent: December 15, 2015Assignees: Midori Hokuyo Co., Ltd., Honda Motor Co., Ltd.Inventors: Shinji Kashiwagura, Masahiko Ogawa, Takashi Ono, Miwa Tada, Yoshiyuki Ito, Masato Ishibashi, Takashi Yamaguchi
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Publication number: 20130312200Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being at least a mixture of compounds of formula (I) and formula (II), wherein Hal signifies fluorine or chlorine, R1 signifies hydrogen, C1-8-alkyl or an alkyleneoxy radical of formula (III), —(—C2-3 alkylene-O—)q—H??(III) R2 signifies a) phenyl, mono- or di-substituted with SO3M or COOM and optionally substituted also with hydroxyl or C1-4-alkyl or C1-4-alkoxy, or b) naphthyl, mono- or di- or tri-substituted with SO3M and optionally substituted also with hydroxyl, or c) C1-8-alkylene, substituted with (SO3M) or (COOM), or d) a radical of formula (IV), —(—C2-3 alkylene-O—)p—Y??(IV) e) or a radical of formula (IVa), —(C2-3 alkylene-O)p—C2-3 alkylene-SO2CH2CH2O—Y??(IVa) m signifies 1 or 2, p signifies 0 or 1, Y signifies hydrogen or —SO3M, q is of from 1 to 10, M signifies hydrogen or an alkali metal cation or an amType: ApplicationFiled: October 5, 2011Publication date: November 28, 2013Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Claus Reineking, Roberta Gamarino, Licia Trimarco, Maurizio Quaglierini, Markus Gisler, Rainer Nusser
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Publication number: 20130227798Abstract: Tanned leather, skin or pelt is produced by non-metal tanning, comprising the step of tanning a bated hide, skin or pelt with a tanning agent (A), the tanning agent (A) being a sulpho-group— containing dichloro-diazine selected from compounds of formula (I) of formula (II) and of formula (III) and mixtures of two or more thereof, wherein R1 signifies hydrogen, methyl, methoxy, benzoyl, naphthoyl, mono- or di(C1-4-alkyl)aminocarbonyl, C1-8-alkoxy-carbonyl or oxy-mono- or oligo-(C2-3-alkyleneoxy)-carbonyl R2-(SO3M)n signifies a radical of formula R3 signifies hydrogen, C1-8-alkyl or C1-8-alkoxy, m is 1 or 2, n is 1 or 2 and M signifies hydrogen or an alkali metal cation or an ammonium cation, the ammonium cation being a protonated tertiary amine or a quaternary ammonium cation, in a tanning bath, the tanning bath having a pH of from 6 to 10 at the beginning of tanning step.Type: ApplicationFiled: October 25, 2011Publication date: September 5, 2013Applicant: CLARIANT FINANCE (BVI) LIMITEDInventors: Claus Reineking, Roberta Gamarino, Licia Trimarco, Maurizio Quaglierini, Markus Gisler, Rainer Nusser
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Publication number: 20100325811Abstract: A leather is obtained by a process where a re-tanning agent is used which is constituted by synthetic tannin, resin and aluminum. The synthetic tannin is constituted by (a) condensation product of aromatic sulfonic acid with formaldehyde, (b) methylene cyclic polymer of aromatic sulfonic acid with hydroxy aromatic compound, and (c) glyoxal. The resin is constituted by (a) acrylic acid, methacrylic acid, acrylic acid ester or methacrylic acid ester polymer(s), and copolymer(s) thereof, and (b) polycondensation product of melamine with formaldehyde.Type: ApplicationFiled: June 27, 2008Publication date: December 30, 2010Applicants: MIDORI HOKUYO CO., LTD.Inventors: Shinji Kashiwagura, Seiji Yamaguchi, Yoshiyuki Ito, Takashi Yamaguchi
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Patent number: 7270985Abstract: A process is disclosed to treat the protein hydrolysate, prepared conventionally from a proteinous source, with alkali metal hydride to obtain alcohol which is subsequently oxidized to obtain aldehyde under certain specified conditions, thereby converting large protein molecules into aldehyde based industrial products of much smaller molecular size.Type: GrantFiled: September 14, 2004Date of Patent: September 18, 2007Assignee: Council of Scientific & Industrial ResearchInventors: James Kanagaraj, Gopala Suseela Rajakumar, Sayeed Sadulla
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Patent number: 7115387Abstract: A process is disclosed to treat the protein hydrolysate, prepared conventionally from a proteinous source, with alkyl halide to obtain alcohol which is subsequently oxidized to obtain aldehyde under certain specified conditions, thereby converting large protein molecules into aldehyde based industrial products of much smaller molecular size.Type: GrantFiled: September 15, 2003Date of Patent: October 3, 2006Assignee: Council of Scientific & Industrial ResearchInventors: James Kanagaraj, Gopala Suseela Rajakumar, Sayeed Sadulla
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Patent number: 6991659Abstract: The invention provides a process for the production of tanned and optionally retanned leather by treatment of an optionally (pre)tanned animal hide or pelt with an aldehyde-based treatment agent (A), wherein the optionally (pre)tanned animal hide or pelt is treated with (A) an aldehyde-based treatment agent which may e.g.Type: GrantFiled: January 25, 2002Date of Patent: January 31, 2006Assignee: Clariant Finance (BVI) LimitedInventors: Roy Kittmer, Song Ma, Matthew Walker
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Patent number: 6846336Abstract: The present invention relates to acid-resistant solutions containing aromatic formaldehyde condensation products having sulfonate and/or carboxylate groups, aliphatic carboxylic acids, aromatic sulfonic acids, and glycol ether solvents, to the preparation thereof, and to their use as leveling agents, dispersants or fastness improvers in textile finishing, as tanning agents for leather, and in the stain resist finishing of textile materials.Type: GrantFiled: October 30, 2000Date of Patent: January 25, 2005Assignee: Bayer AktiengesellschaftInventors: Michael Gerle, Klaus Walz, Hans Albert Ehlert, Ralf Heinen
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Patent number: 6827745Abstract: A mixture of THP and a moderator is used to tan leather. The moderator is selected from metaphosphates and polyhydroxy or polypyrolidyl compounds such as glycerol, carboxydrates PVA or PVP.Type: GrantFiled: February 6, 2002Date of Patent: December 7, 2004Assignee: Rhodia Consumer Specialties LimtedInventors: Christopher Raymond Jones, Gareth Rhys Collins, Robert Eric Talbot