(19)
(11) EP 0 922 715 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
21.05.2008 Bulletin 2008/21

(45) Mention of the grant of the patent:
02.04.2008 Bulletin 2008/14

(21) Application number: 98123058.4

(22) Date of filing: 09.12.1998
(51) International Patent Classification (IPC): 
C08F 20/52(2006.01)
C07C 231/10(2006.01)
C07C 257/20(2006.01)
 C08F 220/52(2006.01)
C07C 233/90(2006.01)

(54)

Stimuli-responsive polymer utilizing keto-enol tautomerization

Via Keto-Enol-Tautomerie auf Stimuli reagierendes Polymer

Polymère sensible aux stimuli par tautomérisation kéto-énolique

(84) Designated Contracting States:
DE FR GB

(30) Priority: 09.12.1997 JP 35400397
09.12.1997 JP 35400497
13.03.1998 JP 8058198
13.03.1998 JP 8058298
13.03.1998 JP 8058398
14.09.1998 JP 27640398

(43) Date of publication of application:
16.06.1999 Bulletin 1999/24

(73) Proprietors:
  • National Institute of Advanced Industrial Science and Technology
    Tokyo 100-8921 (JP)
  • Chisso Corporation
    Osaka-shi Osaka (JP)

(72) Inventors:
  • Ohnishi, Noriyuki
    Tsukuba-shi, Ibaraki 305-8565 (JP)
  • Aoshima, Kazumi
    Tsukuba-shi, Ibaraki 305-8565 (JP)
  • Kataoka, Kazunori
    Tokyo 113-8656 (JP)
  • Ueno, Katsuhiko
    Tsukuba-shi, Ibaraki 305-8565 (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)


(56) References cited: : 
BE-A- 625 613
US-A- 2 719 138
 FR-A- 2 738 252
US-A- 4 935 413
   
  • DATABASE COMPENDEX [Online] ENGINEERING INFORMATION, INC., NEW YORK, NY, US; COWIE J M G ET AL: "Location of three critical phase boundaries in poly(acrylic acid)-dioxane solutions" Database accession no. EIX90120561789 XP002253911 & POLYMER;POLYMER AUG 1990, vol. 31, no. 8, August 1990 (1990-08), pages 1507-1513,
  • DATABASE WPI Section Ch, Week 199530 Derwent Publications Ltd., London, GB; Class A97, AN 1995-227588 XP002188699 & JP 07 136505 A (TERUMO CORP), 30 May 1995 (1995-05-30)
  • KATHMANN E E ET AL: "WATER-SOLUBLE COPOLYMERS. 68. POLYELECTROLYTES OF N-VINYLFORMAMIDE WITH SODIUM 3-ACRYLAMIDO-3-METHYLBUTONOATE, SODIUM 2-ACRYLAMIDO-2-METHYLPROPANESULFONATE, AND SODIUM ACRYLATE: SOLUTION BEHAVIOR" , MACROMOLECULES, AMERICAN CHEMICAL SOCIETY. EASTON, US, VOL. 29, NR. 16, PAGE(S) 5273-5278 XP000892059 ISSN: 0024-9297 * page 5277, column 2 *
  • B. SEILLER, D. HEINS, C. BRUNEAU, P.H. DIXNEUF: "Efficient preparation of acylamides, acylcarbamates and acylureas from alk-1-en-2-yl esters" TETRAHEDRON, vol. 51, no. 40, 1995, pages 10901-10912, XP002253910
  • DATABASE BEILSTEIN [Online] Beilstein Registry number 1754850, 1996 "Acetyl-methacryloyl-amine" XP002253912
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).