Global Patent Index - EP 1319031 A2

EP 1319031 A2 2003-06-18 - METHOD OF PREPARING PARTICULATE CROSSLINKED POLYMER

Title (en)

METHOD OF PREPARING PARTICULATE CROSSLINKED POLYMER

Title (de)

VERFAHREN ZUR HERSTELLUNG VON TEILCHENFÖRMIGEM VERNETZTEN POLYMER

Title (fr)

PROCEDE DE PREPARATION DE POLYMERE RETICULE, SOUS FORME DE PARTICULES

Publication

EP 1319031 A2 (EN)

Application

EP 01971085 A

Priority

  • US 0128946 W
  • US 66388000 A

Abstract (en)

[origin: WO0222701A2] Described is a method of preparing particulate crosslinked polymer, which comprises: (a) preparing a polymerizable organic phase; (b) forming a suspension of droplets of the organic phase in a liquid suspension medium, the organic phase being substantially insoluble in the liquid suspension medium; and (c) polymerizing the suspension of droplets of the organic phase in the liquid suspension medium, thereby forming particulate crosslinked polymer. The organic phase comprises: (1) a first component comprising, (i) at least one of a polyisocyanate having at least two isocyanate groups and a polyepoxide having at least two epoxide groups, and (ii) optionally a capped polyisocyanate having at least two capped isocyanate groups; and (2) a second component comprising an active hydrogen functional reactant having at least two active hydrogen groups that are reactive with the isocyanate groups and epoxide groups of the first component, the active hydrogen functional reactant comprises a polyamine having at least two functional groups selected from primary amine, secondary amine and combinations thereof.

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

C08G 18/00; C08G 18/10; C08G 59/54

IPC 8 full level (invention and additional information)

C08G 18/08 (2006.01); C08G 18/10 (2006.01); C08G 59/54 (2006.01)

CPC (invention and additional information)

C08G 59/54 (2013.01); C08G 18/0866 (2013.01); C08G 18/10 (2013.01)

Combination set (CPC)

  1. C08G 18/10 + C08G 18/50
  2. C08G 18/10 + C08G 18/3814

Citation (search report)

See references of WO 0222701A3

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 0222701 A2 20020321; WO 0222701 A3 20020613; AU 9101501 A 20020326; CN 1235930 C 20060111; CN 1474839 A 20040211; EP 1319031 A2 20030618; TW I298074 B 20080621

INPADOC legal status


2007-12-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20070609

2007-02-28 [R17C] DATE OF DESPATCH OF FIRST EXAMINATION REPORT

- Effective date: 20060123

2003-06-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030414

2003-06-18 [AK] DESIGNATED CONTRACTING STATES:

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

2003-06-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI