Global Patent Index - EP 1007613 A1

EP 1007613 A1 2000-06-14 - METHOD FOR PRODUCING WATER- AND DUST-FREE ANION TENSIDE GRANULES

Title (en)

METHOD FOR PRODUCING WATER- AND DUST-FREE ANION TENSIDE GRANULES

Title (de)

VERFAHREN ZUR HERSTELLUNG WASSER- UND STAUBFREIER ANIONTENSIDGRANULATE

Title (fr)

PROCEDE DE PRODUCTION DE GRANULES D'AGENTS DE SURFACE ANIONIQUES EXEMPTS D'EAU ET DE POUSSIERE

Publication

EP 1007613 A1 (DE)

Application

EP 98943891 A

Priority

  • DE 19736906 A
  • DE 19741911 A
  • DE 19806495 A
  • EP 9805212 W

Abstract (en)

[origin: WO9910459A1] The invention relates to a method for producing water- and dust-free anion tenside granules with a high bulk density. According to said method, aqueous pastes of fatty acid polyglycol ester sulphates with a solids content of at least 20 weight per cent are dried to a residual water content of less than 2 weight per cent in a horizontally positioned film evaporator with rotating internals. At the same time, the pastes are made to form lumps. This is achieved by means of a decreasing temperature gradient applied to the film evaporator from product entry to product exit, and by gassing the pastes with air in the counter-current. The pastes are also dried exclusively by the heated walls. The inventive granules are particularly suitable for producing hard soap.

IPC 1-7 (main, further and additional classification)

C11D 1/28; C11D 1/37; C11D 1/65; C11D 1/83; C11D 1/94; C11D 11/00; C11D 17/06

IPC 8 full level (invention and additional information)

C07C 67/26 (2006.01); C08G 65/26 (2006.01); C11D 1/28 (2006.01); C11D 1/37 (2006.01); C11D 1/65 (2006.01); C11D 1/83 (2006.01); C11D 1/86 (2006.01); C11D 1/94 (2006.01); C11D 3/12 (2006.01); C11D 3/20 (2006.01); C11D 3/22 (2006.01); C11D 10/04 (2006.01); C11D 11/00 (2006.01); C11D 17/00 (2006.01); C11D 17/06 (2006.01); C11D 1/04 (2006.01); C11D 1/06 (2006.01); C11D 1/14 (2006.01); C11D 1/16 (2006.01); C11D 1/29 (2006.01); C11D 1/52 (2006.01); C11D 1/66 (2006.01); C11D 1/72 (2006.01); C11D 1/90 (2006.01)

CPC (invention and additional information)

C07C 67/26 (2013.01); A61K 8/0275 (2013.01); A61K 8/42 (2013.01); A61K 8/44 (2013.01); A61K 8/463 (2013.01); A61K 8/604 (2013.01); C08G 65/2615 (2013.01); C08G 65/2672 (2013.01); C11D 1/28 (2013.01); C11D 1/37 (2013.01); C11D 1/65 (2013.01); C11D 1/652 (2013.01); C11D 1/83 (2013.01); C11D 1/86 (2013.01); C11D 1/94 (2013.01); C11D 10/04 (2013.01); C11D 10/042 (2013.01); C11D 11/0082 (2013.01); C11D 17/065 (2013.01); A61K 2800/596 (2013.01); A61Q 5/02 (2013.01); A61Q 19/10 (2013.01); C11D 1/04 (2013.01); C11D 1/06 (2013.01); C11D 1/146 (2013.01); C11D 1/16 (2013.01); C11D 1/29 (2013.01); C11D 1/523 (2013.01); C11D 1/525 (2013.01); C11D 1/662 (2013.01); C11D 1/72 (2013.01); C11D 1/90 (2013.01)

Combination set (CPC)

  1. C07C 67/26 + C07C 69/24
  2. C07C 67/26 + C07C 69/34

Citation (search report)

See references of WO 9910459A1

Designated contracting state (EPC)

DE ES FR IT

EPO simple patent family

WO 9910459 A1 19990304; EP 1007613 A1 20000614

INPADOC legal status


2002-09-04 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020220

2002-04-24 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: COGNIS DEUTSCHLAND GMBH & CO. KG

2001-08-22 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010712

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000216

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR IT