Global patent index - EP 0986591 A1

EP 0986591 A1 2000-03-22 - METHOD FOR THE PREPARATION OF COPOLYMERS FOR ANTISTATIC POLYMERIC COATINGS

Title (en)

METHOD FOR THE PREPARATION OF COPOLYMERS FOR ANTISTATIC POLYMERIC COATINGS

Title (de)

VERFAHREN FÜR DIE HERSTELLUNG VON COPOLYMEREN FÜR ANTISTATISCHE POLYMERBESCHICHTUNGEN

Title (fr)

PROCEDE DE PREPARATION DE COPOLYMERES POUR REVETEMENTS POLYMERES ANTISTATIQUES

Publication

EP 0986591 A1 (EN)

Application

EP 98924348 A

Priority

  • FI 9800480 W
  • FI 972381 A

Abstract (en)

[origin: WO9855522A1] The invention is related to a method for the preparation of copolymers by latex copolymerization for antistatic polymeric coatings, comprising a process for the manufacture of antistatic copolymer latexes based on vinyl aromatic compounds, alkyl esters of methacrylic acid or acrylic acid and amine alkyl esters of methacrylic acid and/or vinyl pyridine derivatives wherein the latexes of the above copolymers are prepared by emulsion copolymerization in the presence of trimethyl alkyl ammonium halogenide in the amount of 2-4 % of the total weight of the monomers in combination with a water soluble initiator, wherein the formation of latex particles with the direct morphology of core-shell takes place, the core comprising the copolymer formed in stage 1 of the process and the shell comprising the copolymer formed in stage 2 of the process.

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

C08F 257/02; C08F 265/04

IPC 8 full level (invention and additional information)

C08F 257/02 (2006.01); C08F 265/04 (2006.01)

CPC (invention and additional information)

C08F 265/04 (2013.01); C08F 257/02 (2013.01)

Citation (search report)

See references of WO 9855522A1

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

WO 9855522 A1 19981210; AU 7657498 A 19981221; EP 0986591 A1 20000322; FI 972381 A0 19970605; FI 972381 A 19981206

INPADOC legal status

2002-04-24 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20020228

2000-03-22 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991125

2000-03-22 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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

2000-03-22 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL PAYMENT 19991125;LT PAYMENT 19991125;LV PAYMENT 19991125;MK PAYMENT 19991125;RO PAYMENT 19991125;SI PAYMENT 19991125