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    METHOD FOR PRODUCING A LEATHER SEMI-FINISHED PRODUCT
    2.
    发明专利
    METHOD FOR PRODUCING A LEATHER SEMI-FINISHED PRODUCT 未知

    公开(公告)号：AU2003294721A1

    公开(公告)日：2004-06-18

    申请号：AU2003294721

    申请日：2003-11-25

    Applicant: BASF AG

    Inventor： RADLER THORSTEN ,  BACH VOLKER ,  TAEGER TILMAN LUDECKE ,  HUFFER STEPHAN ,  SCHROEDER STEFAN ,  CARLE JURGEN

    IPC: C14C3/16 ,  C14C3/28

    Abstract: A semifinished leather product is produced from an animal hide by pretanning with the use of a chromium-free tanning agent and of a clay mineral which, after stirring for 30 minutes in water at 50° C. at a circumferential rotor speed of from 5 to 25 m/s, has a number average particle diameter of less than 2 μm or a bimodal particle size distribution with a first, finely divided fraction whose number average particle diameter is less than 0.5 μm and a second, coarser fraction whose number average particle diameter is less than 5 μm, determined in each case by the method according to ISO 13320-1, by combined laser light diffraction and light scattering, a proportion of the first, finely divided fraction being from 10 to 90% by weight, and drying of the pretanned animal hide to a water content of from 5 to 45%, based on the total weight of the semifinished leather product.

    4.
    发明专利
    未知

    公开(公告)号：MX9307571A

    公开(公告)日：1994-06-30

    申请号：MX9307571

    申请日：1993-12-01

    Applicant: BASF AG

    Inventor： LANGE ARNO ,  REICHELT HELMUT ,  ROTHMAIER HERBERT ,  LOEFFLER HERMANN ,  LAMM GUNTHER ,  BACH VOLKER

    IPC: C09B67/22 ,  D06P1/02 ,  C09B37/00

    Abstract: Dye mixtures containing at least 6 identically coloured dyes of the formula in which D is the radical of a diazo component from the aniline, aminothiophene, aminothiazole, aminoisothiazole or aminobenzisothiazole series, and one of the radicals X and X is amino and the other is a radical of the formula in which L is optionally substituted C2-C8-alkylene, R is hydrogen or optionally substituted C1-C4-alkyl, and R is hydrogen, C1-C4-alkyl, benzyl, phenyl or C1-C8-alkanoyl, their use for the dyeing or printing of textile materials, dye mixtures containing thienylazopyridine dyes and anthraquinone dyes, and their use for the dyeing or printing of textile materials.

    5.
    发明专利
    未知

    公开(公告)号：BRPI0406639A

    公开(公告)日：2005-12-06

    申请号：BRPI0406639

    申请日：2004-01-21

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN ,  REESE OLIVER ,  GRAMLICH WALTER ,  SCHROEDER STEFAN ,  SCHERR GUENTER ,  BACH VOLKER

    IPC: C07D307/32 ,  C07D309/30 ,  C14C3/18 ,  C14C9/02 ,  C14C3/16

    Abstract: Production of aqueous formulations comprises heating 2-organyl-oxy-, -thio- or -amino-dihydrofuran, dihydropyran, tetrahydrooxepin and tetrahydrooxocin compound(s) in the presence of water and an acid catalyst and (partly) removing the hydroxy, thio or amine compound during or at the end of heating. Production of aqueous formulations comprises heating 2-organyl-oxy-, -thio- or -amino-dihydrofuran, dihydropyran, tetrahydrooxepin and tetrahydrooxocin compound(s) of formula (I) in the presence of water and an acid catalyst and (partly) removing H-X-R3 during or at the end of heating. X = O, S or N-R6; R3, R6 = R, formyl or CO-R or may be combined to a ring if X is N-R6' R = 1-12 C alkyl or an optionally substituted 3-23 C cycloalkyl, 7-13 C aralkyl or 6-14 C aryl group; R1, R2, R4 = H or R or 2 adjacent groups may be combined to a ring; n = 1-4; and R5 = H or R or R4 and R5 or 2 adjacent R5 groups may be combined to a ring. Independent claims are also included for the following: (A) aqueous formulations prepared by this process; and (B) mixtures of dimers, oligomers and polymers of dicarbonyl compound(s) of formula (III).

    6.
    发明专利
    未知

    公开(公告)号：BR0315817A

    公开(公告)日：2005-09-13

    申请号：BR0315817

    申请日：2003-11-25

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN ,  SCHROEDER STEFAN ,  CARLE JUERGEN ,  RODLER THORSTEN ,  BACH VOLKER ,  TAEGER TILMAN LUEDECKE

    IPC: C14C3/16 ,  C14C3/28

    Abstract: A semifinished leather product is produced from an animal hide by pretanning with the use of a chromium-free tanning agent and of a clay mineral which, after stirring for 30 minutes in water at 50° C. at a circumferential rotor speed of from 5 to 25 m/s, has a number average particle diameter of less than 2 μm or a bimodal particle size distribution with a first, finely divided fraction whose number average particle diameter is less than 0.5 μm and a second, coarser fraction whose number average particle diameter is less than 5 μm, determined in each case by the method according to ISO 13320-1, by combined laser light diffraction and light scattering, a proportion of the first, finely divided fraction being from 10 to 90% by weight, and drying of the pretanned animal hide to a water content of from 5 to 45%, based on the total weight of the semifinished leather product.

    9.
    发明专利
    未知

    公开(公告)号：BRPI0612827A2

    公开(公告)日：2012-10-09

    申请号：BRPI0612827

    申请日：2006-07-06

    Applicant: BASF AG

    Inventor： HUEFFER STEPHAN ,  SCHROEDER STEFAN ,  LAMALLE PHILIPPE ,  BACH VOLKER

    IPC: C14C3/16

    Abstract: Process for the production of leather, wherein, after liming, deliming and, if appropriate, pickling, animal hides are pretanned or tanned with a mixture of compounds comprising (a) at least one organic tanning agent and (b) a mixture of (b1) at least one C3-C12-dicarboxylic acid (b2) and at least one further acidic compound selected from C1-C3-mono- or C3-C12-dicarboxylic acids, or salts thereof.

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