Global Patent Index - EP 1240203 A1

EP 1240203 A1 2002-09-18 - METHOD FOR OBTAINING WATER SOLUBLE POLYMERS, RESULTING POLYMERS AND USES THEREOF

Title (en)

METHOD FOR OBTAINING WATER SOLUBLE POLYMERS, RESULTING POLYMERS AND USES THEREOF

Title (de)

VERFAHREN ZUR HERSTELLUNG VON WÄSSERLÖSLICHEN POLYMEREN, SO HERGESTELLTE POLYMERE UND DEREN VERWENDUNG

Title (fr)

PROCEDE D'OBTENTION DE POLYMERES HYDROSOLUBLES POLYMERES OBTENUS ET LEURS UTILISATIONS

Publication

EP 1240203 A1 (FR)

Application

EP 00962618 A

Priority

  • FR 0002519 W
  • FR 9911798 A

Abstract (en)

[origin: TWI238831B] A method of obtaining homopolymers and/or copolymers in aqueous solution by the use of phosphorous acid and/or its salts or sodium hypophosphite and by neutralisation during the polymerisation of the ethylenically unsaturated monomers by the continuous addition, first of all, of bases such as sodium hydroxide, potassium hydroxide or lithium hydroxide and then bases of alkaline earths such as calcium hydroxide, magnesium hydroxide, calcium oxide or magnesium oxide. The polymers obtained by the said method and uses thereof.

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

C08F 2/10

IPC 8 full level (invention and additional information)

C08F 2/10 (2006.01)

CPC (invention and additional information)

C08F 2/10 (2013.01)

Citation (search report)

See references of WO 0119874A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

FR 2798661 A1 20010323; FR 2798661 B1 20011102; AU 7428100 A 20010417; CA 2384761 A1 20010322; EP 1240203 A1 20020918; NO 20021252 A 20020418; NO 20021252 D0 20020313; TW I238831 B 20050901; US 2005159568 A1 20050721; US 6956090 B1 20051018; WO 0119874 A1 20010322

INPADOC legal status


2006-09-27 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20060404

2004-07-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040525

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020416

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: RO;SI