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：DE10255095A1

公开(公告)日：2004-06-03

申请号：DE10255095

申请日：2002-11-26

Applicant: BASF AG

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

IPC: C14C3/16 ,  C14C3/28 ,  C14B3/00

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：DE10332991A1

公开(公告)日：2005-02-03

申请号：DE10332991

申请日：2003-07-18

Applicant: BASF AG

Inventor： LUNKWITZ RALPH ,  SATTLER FRIEDRICH ,  DANISCH PETER ,  RAEDLER THORSTEN

IPC: C14C9/02 ,  C08L83/04 ,  B01F17/08 ,  C08K5/36

Abstract: Method for rendering leather and pelts hydrophobic by treatment, before, during or after, retanning, with one or more formulations (X) that contain 1-30wt.% of a mixture (A) of polysiloxanes containing 10-90wt.% each of carboxy-containing polysiloxane (A1) and carboxy-free polysiloxane (A2), also 3-25wt.% emulsifier (A3). Independent claims are also included for the following: (1) leather and pelts treated by the new method; and (2) formulations that contain 1-20wt.% of mixture (A).

公开(公告)号：DE10306748A1

公开(公告)日：2004-08-26

申请号：DE10306748

申请日：2003-02-17

Applicant: BASF AG

Inventor： LUNKWITZ RALPH ,  DANISCH PETER ,  RAEDLER THORSTEN ,  JANSON WERNER

IPC: C14C9/02 ,  C08L83/04 ,  C09D183/04

Abstract: Method for rendering leather and pelts hydrophobic by treatment, before, during or after, retanning, with one or more formulations (X) that contain 1-30wt.% of a mixture (A) of polysiloxanes containing 10-90wt.% each of carboxy-containing polysiloxane (A1) and carboxy-free polysiloxane (A2), also 3-25wt.% emulsifier (A3). Independent claims are also included for the following: (1) leather and pelts treated by the new method; and (2) formulations that contain 1-20wt.% of mixture (A).