Global Patent Index - EP 1242485 A1

EP 1242485 A1 2002-09-25 - Process for the production of fluorinated elastomers with low glass transition temperatures based on vinylidene fluoride and free of tetraluoroethylene or siloxane group

Title (en)

Process for the production of fluorinated elastomers with low glass transition temperatures based on vinylidene fluoride and free of tetraluoroethylene or siloxane group

Title (de)

Verfahren zur Herstellung von Fluorelastomeren mit niedrigen Glasübergangstemperatur auf Basis von Vinylidenfluorid und frei von Tetrafluorethylen und Siloxangruppen

Title (fr)

Procédé de préparation d'elastomères fluorés à faible temperature de transition vitreuse à base de fluorure de vinylidene et ne contenant ni du tetrafluoroethylene, ni de groupement siloxane

Publication

EP 1242485 A1 (FR)

Application

EP 00986957 A

Priority

  • CA 0001588 W
  • CA 2293847 A
  • CA 2299614 A

Abstract (en)

[origin: WO0149758A1] The invention concerns the synthesis of novel fluorinated elastomers having very low glass transition temperatures, good resistance to bases, oil and fuels and suitable properties in use. Said elastomers contain, for example. 90 to 50 mol % of vinylidene fluorides (VDF) and 10 to 50 mol % of perfluoro vinyl ether (PMVE). In that particular case, they are prepared by free radical copolymerisation of VDF and PMVE in the presence of organic initiators such as for example peroxides, peresters or diazonium compounds.

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

C08F 214/22; C08F 216/14

IPC 8 full level (invention and additional information)

C08F 2/12 (2006.01); C08F 214/22 (2006.01)

CPC (invention and additional information)

C08F 214/222 (2013.01)

Citation (search report)

See references of WO 0149758A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0149758 A1 20010712; AU 2338201 A 20010716; EP 1242485 A1 20020925; JP 2003527468 A 20030916; US 2003153702 A1 20030814; US 2005215741 A1 20050929

INPADOC legal status


2006-06-07 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20051029

2005-07-27 [RTI1] TITLE (CORRECTION)

- Free text: PROCESS FOR THE PRODUCTION OF FLUORINATED ELASTOMERS WITH LOW GLASS TRANSITION TEMPERATURES BASED ON VINYLIDENE FLUORIDE

2004-05-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040319

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020626

2002-09-25 [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 TR

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI