公开(公告)号：US3657376A

公开(公告)日：1972-04-18

申请号：US3657376D

申请日：1970-06-03

Applicant: BASF AG

Inventor： STUEBINGER ADOLF ,  MUELLER HERBERT ,  OVERWIEN HERMANN

IPC: B01J27/00 ,  C07C1/00 ,  C07C1/24 ,  C07C11/18 ,  C07C67/00

CPC classification number: C07C1/24 ,  C07C2527/167 ,  C07C11/18

Abstract: PROCESS FOR THE MANUFACTURE OF ISOPRENE BY CANALYTIC DEHYDRATION OF 3-METHYL-3-BUTEN-1-OL IN THE PRESENCE OF CALCIUM PHOSPHATE AS CATALYST AT ELEVATED TEMPERATURES, WHEREIN DEHYDRATION IS CARRIED OUT, PREFERABLY IN THE PRESENCE OF STREAM, AT TEMPERATURES BETWEEN 200* AND 300*C. USING A 3-METHYL-3-BUTEN-1-OL HAVING A PURITY OF A LEAST 85% BY WEIGHT BASED ON THE TOTAL WEIGHT OF OXYGEN-CONTAINING ORGANIC COMPOUNDS PRESENT IN THE STARTING MATERIAL. ISOPRENE IS AN IMPORTANT MONOMER, FOR EXAMPLE IN THE PRODUCTION OF SYNTHETIC RUBBER.

公开(公告)号：BR9800980A

公开(公告)日：1999-09-28

申请号：BR9800980

申请日：1998-03-26

Applicant: BASF AG

Inventor： WOLF GERHARD ,  IGL GEORGE ,  STUEBINGER ADOLF ,  WERNER JURGEN ,  ADAMS LUCAS JULIO ,  SUBKLEW GERD MANFRED

IPC: C14C1/08 ,  C14C3/20

公开(公告)号：DE59808160D1

公开(公告)日：2003-06-05

申请号：DE59808160

申请日：1998-02-23

Applicant: BASF AG

Inventor： WOLF GERHARD ,  IGL GEORG ,  GROESSER THOMAS ,  STUEBINGER ADOLF ,  WERNER JUERGEN ,  GUENTHER ERHARD

IPC: C14C3/20 ,  C07C303/06 ,  C07C309/29 ,  C07C309/35 ,  C08G12/36 ,  C08G12/40 ,  C14C3/28

Abstract: A composition containing (A) one or more aromatic sulfonates, (B) one or more aldehyde resins and (C) a buffer and is prepared and used for treating, in particular neutralizing, leather tanned with mineral compounds or mineral-free compounds.

公开(公告)号：DE4124948C2

公开(公告)日：2002-08-01

申请号：DE4124948

申请日：1991-07-27

Applicant: BASF AG

Inventor： WEBERNDOERFER VOLKMAR ,  STUEBINGER ADOLF ,  PROLL THEO ,  BERNBACH JUERGEN

IPC: C08G69/48 ,  C08G73/02 ,  C08G73/04 ,  D21H17/55 ,  D21H21/10 ,  C08G85/00

公开(公告)号：BR9101909A

公开(公告)日：1991-12-17

申请号：BR9101909

申请日：1991-05-09

Applicant: BASF AG

Inventor： GRAF HERMANN ,  STUEBINGER ADOLF ,  LORENZ KLAUS ,  SCHAFFER ORTWIN ,  STORK KARL

IPC: C08G14/02 ,  C08G14/12 ,  C14C3/20

Abstract: Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde can be obtained by (A) preparing a homogeneous reaction mixture in sulfuric acid from the phenolmonosulfonic acid and dihydroxydiphenyl sulfone in the molar ratio of from 3:1 to 10:1, with the proviso that the water content of the mixture is not more than 10% of the total weight of the components, and the mixture contains from 0.3 to 1.5 moles of sulfuric acid per mole of dihydroxydiphenyl sulfone, at from 100 DEG to 180 DEG C., (B) subsequently, at from 40 DEG to 90 DEG C., carrying out a precondensation with 1 to 2 moles of formaldehyde and 0.5 to 1.5 moles of urea per mole of phenol units present in aqueous medium, (C) partially neutralizing the reaction mixture, (D) adding to the partially neutralized reaction mixture 0 to 0.5 mole of phenol per mole of phenol units present and then 0.1 to 0.8 mole of formaldehyde per mole of phenol units then present, (E) further condensing at from 40 DEG to 90 DEG C., (F) shifting the pH of the reaction mixture into the neutral range and (G) subsequently acidifying with a weak acid.

公开(公告)号：CA939683A

公开(公告)日：1974-01-08

申请号：CA104810

申请日：1971-02-08

Applicant: BASF AG

Inventor： STUEBINGER ADOLF ,  MUELLER HERBERT

IPC: C07F9/50