公开(公告)号：DE59007129D1

公开(公告)日：1994-10-20

申请号：DE59007129

申请日：1990-10-23

Applicant: HOECHST AG

Inventor： MILTENBERGER KARLHEINZ DR ,  SCHMIDT MANFRED ,  PETZ KARL DR

IPC: B01J27/053 ,  B01J27/125 ,  B01J31/02 ,  C07B61/00 ,  C07C67/08 ,  C07C67/54 ,  C07C67/58 ,  C07C69/02 ,  C07C69/63

Abstract: In the esterification of aliphatic C2-C6-carboxylic acids with aliphatic C1-C4-alcohols, the ester formed is distilled off azeotropically together with the water of reaction. After being separated from the water of reaction in a separation cooler, the ester phase is freed from entrained acid by scrubbing with water, and water and alcohol are then removed by distilling off a small portion of the ester. In this manner, no salt-containing waste water is formed. The ester is obtained in very good yield and free of acid and alcohol.

公开(公告)号：DE3935470A1

公开(公告)日：1991-05-02

申请号：DE3935470

申请日：1989-10-25

Applicant: HOECHST AG

Inventor： MILTENBERGER KARLHEINZ DR ,  SCHMIDT MANFRED ,  PETZ KARL DR

IPC: B01J27/053 ,  B01J27/125 ,  B01J31/02 ,  C07B61/00 ,  C07C67/08 ,  C07C67/54 ,  C07C67/58 ,  C07C69/02 ,  C07C69/63

Abstract: In the esterification of aliphatic C2-C6-carboxylic acids with aliphatic C1-C4-alcohols, the ester formed is distilled off azeotropically together with the water of reaction. After being separated from the water of reaction in a separation cooler, the ester phase is freed from entrained acid by scrubbing with water, and water and alcohol are then removed by distilling off a small portion of the ester. In this manner, no salt-containing waste water is formed. The ester is obtained in very good yield and free of acid and alcohol.

公开(公告)号：ES2105434T3

公开(公告)日：1997-10-16

申请号：ES94111132

申请日：1994-07-18

Applicant: HOECHST AG

Inventor： HEINRICHS FRANZ-LEO DR ,  HOHNER GERD DR ,  LUKASCH ANTON ,  PETZ KARL DR

IPC: C07C51/25 ,  C07C51/305 ,  C07C53/126

公开(公告)号：DE3060343D1

公开(公告)日：1982-06-09

申请号：DE3060343

申请日：1980-10-10

Applicant: HOECHST AG

Inventor： PETZ KARL DR ,  RIEGER KLAUS DR ,  STEIDL DIETER

IPC: C09D5/00 ,  C08L91/06 ,  C09D7/00 ,  C09D7/12

Abstract: The invention provides a process for the manufacture of a polyethylene wax micro-powder, 99 weight % of which has a grain size of less than 15 microns, for the dulling of varnishes. Such a micro-powder generally cannot be obtained without difficulty by grinding; in accordance with the invention this is possible, however, by grinding the polyethylene wax together with an amide wax.

公开(公告)号：DK0635475T3

公开(公告)日：1997-12-15

申请号：DK94111132

申请日：1994-07-18

Applicant: HOECHST AG

Inventor： HEINRICHS FRANZ-LEO DR ,  HOHNER GERD DR ,  LUKASCH ANTON ,  PETZ KARL DR

IPC: C07C51/25 ,  C07C51/305 ,  C07C53/126

公开(公告)号：BR9402918A

公开(公告)日：1995-04-11

申请号：BR9402918

申请日：1994-07-22

Applicant: HOECHST AG

Inventor： HEINRICHS FRANZ-LEO DR ,  HOHNER GERD DR ,  LUKASH ANTON ,  PETZ KARL DR

IPC: C07C51/25 ,  C07C51/305 ,  C07C53/126 ,  C07C51/21 ,  C07C57/03

公开(公告)号：DE59402888D1

公开(公告)日：1997-07-03

申请号：DE59402888

申请日：1994-07-18

Applicant: HOECHST AG

Inventor： HEINRICHS FRANZ-LEO DR ,  HOHNER GERD DR ,  LUKASCH ANTON ,  PETZ KARL DR

IPC: C07C51/25 ,  C07C51/305 ,  C07C53/126

公开(公告)号：AT153647T

公开(公告)日：1997-06-15

申请号：AT94111132

申请日：1994-07-18

Applicant: HOECHST AG

Inventor： HEINRICHS FRANZ-LEO DR ,  HOHNER GERD DR ,  LUKASCH ANTON ,  PETZ KARL DR

IPC: C07C51/25 ,  C07C51/305 ,  C07C53/126