Global Patent Index - EP 1056789 A1

EP 1056789 A1 2000-12-06 - CROSS-LINKED POLYMERS CAPABLE OF SWELLING

Title (en)

CROSS-LINKED POLYMERS CAPABLE OF SWELLING

Title (de)

VERNETZTE QUELLFÄHIGE POLYMERE

Title (fr)

POLYMERES GONFLANTS RETICULES

Publication

EP 1056789 A1 (DE)

Application

EP 99934290 A

Priority

  • DE 19807504 A
  • EP 9901065 W

Abstract (en)

[origin: DE19807504A1] 1,4,6,9-Tetraoxa-5-silaspiro(4.4)nonanes (diglycol silicates) (I) are used as crosslinking agents for surface crosslinking of particles of superabsorbing polymer. 1,4,6,9-Tetraoxa-5-silaspiro(4.4)nonanes (diglycol silicates) of formula (I) are used as crosslinking agents for surface crosslinking of particles of superabsorbing polymer: R, R' = hydrogen (H) or 1-6 carbon (C) alkyl. An Independent claim is also included for surface-crosslinked superabsorbing polymer produced in this way.

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

C08F 8/42; A61L 15/00; C08G 85/00

IPC 8 full level (invention and additional information)

A61L 15/00 (2006.01); A61L 15/60 (2006.01); C07F 7/07 (2006.01); C08F 8/42 (2006.01); C08G 85/00 (2006.01); C08J 3/24 (2006.01)

CPC (invention and additional information)

C08J 3/245 (2013.01); A61L 15/60 (2013.01); C08F 8/42 (2013.01); C08J 2300/14 (2013.01)

Combination set (CPC)

  1. A61L 15/60 + C08L 33/06
  2. A61L 15/60 + C08L 3/08
  3. A61L 15/60 + C08L 1/26

Citation (search report)

See references of WO 9942496A1

Designated contracting state (EPC)

BE DE ES FR GB IT NL SE

EPO simple patent family

DE 19807504 A1 19990826; AU 3253199 A 19990906; BR 9908078 A 20001024; CA 2319786 A1 19990826; CN 1291203 A 20010411; EP 1056789 A1 20001206; ID 28466 A 20010524; JP 2002504568 A 20020212; WO 9942496 A1 19990826

INPADOC legal status


2002-04-17 [18W] WITHDRAWN

- Date of withdrawal: 20020221

2000-12-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000706

2000-12-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE ES FR GB IT NL SE