公开(公告)号：DE102005032585A1

公开(公告)日：2007-01-25

申请号：DE102005032585

申请日：2005-07-11

Applicant: BASF AG

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

IPC: C14C3/08 ,  C14C9/00

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.

公开(公告)号：DE10336453A1

公开(公告)日：2005-03-03

申请号：DE10336453

申请日：2003-08-06

Applicant: BASF AG

Inventor： WOLF GERHARD ,  HUEFFER STEPHAN ,  REESE OLIVER ,  DECKER JUERGEN ,  IGL GEORG ,  SCHROEDER STEFAN ,  SCHERR GUENTER

IPC: C14C11/00 ,  D06P1/607 ,  D06P3/32 ,  D06P1/645 ,  C14C3/14

公开(公告)号：DE10333319A1

公开(公告)日：2005-02-10

申请号：DE10333319

申请日：2003-07-22

Applicant: BASF AG

Inventor： MICHL KATHRIN ,  TAEGER TILMAN LUEDECKE ,  PABST GUNTHER ,  LAMALLE PHILIPPE ,  HUEFFER STEPHAN ,  SCHROEDER STEFAN

IPC: C08F2/00 ,  C08F2/10 ,  C08F2/38 ,  C08F2/18

公开(公告)号：AU2003294691A1

公开(公告)日：2004-05-13

申请号：AU2003294691

申请日：2003-10-14

Applicant: BASF AG

Inventor： PABST GUNTHER ,  LAMALLE PHILIPPE ,  HUFFER STEPHAN ,  SCHROEDER STEFAN ,  TAEGER TILMAN LUDECKE

IPC: C14C1/06 ,  B60J7/20

Abstract: Leather is produced by a process comprising at least two of the following process steps A) to D): A) use of one or more polyelectrolytes in the production of semifinished products or intermediate products, comprising the addition of one or more polyelectrolytes in at least one of the steps (a) to (d) (a) together with from 0 to 1.5% by weight, based on the salted weight, of lime, immediately before or during liming, (b) before or during deliming, (c) before or during bating, (d) together with, altogether, from 0 to 3% by weight, based on the pelt weight, of alkali metal or alkaline earth metal salt, immediately before or during pickling; B) treatment of the hides during liming in an aqueous liquor with one or more compounds of the formula B.1 or the corresponding alkali metal, alkaline earth metal, ammonium or phosphonium salts thereof, R 10 and X 1 to X 4 having the meanings stated in the description, with the proviso that at least two mercapto groups are present in the compound or the compounds B.1; C) use of degreasing agents of the formula C.1 for degreasing pelts, hides or other intermediate stages and semifinished products in leather production, n and R 16 to R 21 having the meanings stated in the description; D) tanning with the use of a tanning agent which can be prepared by reacting at least one aldehyde of the formula D.1, with at least one further identical or different aldehyde of the formula D.1 in the presence of an acidic catalyst and optionally in the presence of at least one further carbonyl compound of the formula D.2 Z and R 22 to R 25 having the meanings stated in the description, with the proviso that, when Z corresponds to a single chemical bond or a radical without alpha-hydrogen atoms, at least one further aldehyde of the formula D.1, in which Z contains alpha-hydrogen atoms, or at least one further carbonyl compound of the formula D.2 is present.

公开(公告)号：DE10237259A1

公开(公告)日：2004-02-26

申请号：DE10237259

申请日：2002-08-14

Applicant: BASF AG

Inventor： HUEFFER STEPHAN ,  SCHROEDER STEFAN ,  WAGNER EINHARD ,  RAEDLER THORSTEN ,  VILL KARL

IPC: C14C3/16 ,  C14C3/28 ,  C14C3/04

Abstract: Use is claimed as a tanning agent (or an intermediate for a tanning agent) of a clay mineral which, after 30 minutes intensive stirring in water at 50degreesC, gives a laser and light scattering-determined ISO 13320-1 number average particle diameter (D) below 2 mu or a bimodal distribution of (i) 10-90 wt.% of a fraction with D below 0.5 mu and (ii) a coarser fraction of D below 5 mu. An Independent claim is also included for a formulation for use in chromium-free or chrome tanning comprising (a) a clay mineral as above and (b) one or more of an organic polymer, an aldehyde-, sulfone- , resin-, phenol- or vegetable-tanning agent, dubbing material, dye or pigment.

公开(公告)号：AU2003232797A1

公开(公告)日：2003-12-02

申请号：AU2003232797

申请日：2003-05-19

Applicant: BASF AG

Inventor： TAEGER TILMAN LUDECKE ,  PABST GUNTHER ,  LAMALLE PHILIPPE ,  HUFFER STEPHAN ,  SCHROEDER STEFAN

IPC: C14C1/06

Abstract: Horny substances are removed from hides, pelts or skins of dead animals by treating the hides, pelts or skins in aqueous liquor with one or more compounds of the formula I or their corresponding alkali metal or alkaline earth metal salts or ammonium or phosphonium salts, the variables being defined as follows: R 1 is selected from hydrogen and C 1 -C 12 -alkyl, unsubstituted or substituted by one or more S-H or O-H groups; X 1 to X 4 are identical or different and are selected from hydrogen, C 1 -C 4 -alkyl, O-H, S-H and N-HR 2 , R 2 is hydrogen or C 1 -C 12 -alkyl or a C 1 -C 4 -Alkyl-C-O group, at least one radical X 1 to X 4 being S-H when R 1 contains at least one sulfur atom and at least two radicals X 1 to X 4 being S-H when R 1 contains no sulfur atom.

公开(公告)号：AU2003214115A1

公开(公告)日：2003-09-29

申请号：AU2003214115

申请日：2003-03-12

Applicant: BASF AG

Inventor： TAEGER TILMAN LUDECKE ,  SCHROEDER STEFAN ,  LAMALLE PHILIPPE ,  HUFFER STEPHAN ,  PABST GUNTHER

IPC: C14C1/06 ,  C14C1/08 ,  C14C3/22

Abstract: A process for the production of semifinished products and intermediates in the production of leather using one or more organic polyelectrolytes comprises at least one of the following steps: (a) Addition of one or more polyelectrolytes and from 0 to 0.7% by weight, based on the salted weight, of lime immediately before or during liming, (b) addition of one or more polyelectrolytes before or during deliming, (c) addition of one or more polyelectrolytes before or during bating, (d) addition of one or more polyelectrolytes and a total of from 0 to 3% by weight, based on the pelt weight, of alkali metal or alkaline earth metal salt immediately before or in the pickle.

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).

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.

公开(公告)号：BR0315272A

公开(公告)日：2005-08-23

申请号：BR0315272

申请日：2003-10-14

Applicant: BASF AG

Inventor： TAEGER TILMAN LUEDECKE ,  PABST GUNTHER ,  LAMALLE PHILIPPE ,  HUEFFER STEPHAN ,  SCHROEDER STEFAN

IPC: C14C1/06 ,  C14C3/16 ,  C14C1/08

Abstract: Leather is produced by a process comprising at least two of the following process steps A) to D): A) use of one or more polyelectrolytes in the production of semifinished products or intermediate products, comprising the addition of one or more polyelectrolytes in at least one of the steps (a) to (d) (a) together with from 0 to 1.5% by weight, based on the salted weight, of lime, immediately before or during liming, (b) before or during deliming, (c) before or during bating, (d) together with, altogether, from 0 to 3% by weight, based on the pelt weight, of alkali metal or alkaline earth metal salt, immediately before or during pickling; B) treatment of the hides during liming in an aqueous liquor with one or more compounds of the formula B.1 or the corresponding alkali metal, alkaline earth metal, ammonium or phosphonium salts thereof, R 10 and X 1 to X 4 having the meanings stated in the description, with the proviso that at least two mercapto groups are present in the compound or the compounds B.1; C) use of degreasing agents of the formula C.1 for degreasing pelts, hides or other intermediate stages and semifinished products in leather production, n and R 16 to R 21 having the meanings stated in the description; D) tanning with the use of a tanning agent which can be prepared by reacting at least one aldehyde of the formula D.1, with at least one further identical or different aldehyde of the formula D.1 in the presence of an acidic catalyst and optionally in the presence of at least one further carbonyl compound of the formula D.2 Z and R 22 to R 25 having the meanings stated in the description, with the proviso that, when Z corresponds to a single chemical bond or a radical without alpha-hydrogen atoms, at least one further aldehyde of the formula D.1, in which Z contains alpha-hydrogen atoms, or at least one further carbonyl compound of the formula D.2 is present.