A new and improved method for the preparation of cross-linked polycarbonates, and compositions made therefrom
Abstract
An improved method for the preparation of cross-linked polycarbonates is disclosed, comprising the reaction at elevated temperature of a composition containing cyclic carbonate oligomers with at least one polyglycidyl acrylate copolymer formed by the reaction of at least one olefin with a glycidyl acrylate monomer. This invention also includes network polycarbonates wherein the carbonate chains are linked to each other via polyglycidyl acrylate copolymer groups. Further included within the scope of this invention are prepreg compositions which comprise a filler and a mixture of cyclic carbonate oligomers with a polyglycidyl acrylate copolymer.
Term
Term ended
Projected expiry passed 26 June 2009, 17.2 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0206267A2 | Cites | European Patent Office (EPO) | A | Search report |
| EP0269456A2 | Cites | European Patent Office (EPO) | A | Search report |
| US4746725A | Cites | United States of America | XD | Search report |
11 members in 5 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 214965 | United States of America | – | |
| 21496588 | United States of America | A | |
| US19880214965 | – | – | – |
Members11
| Document | Office | Kind | |
|---|---|---|---|
| EP0349874A2 | European Patent Office (EPO) | A2 | |
| JPH0280421A | Japan | A | |
| US4916189A | United States of America | A | |
| EP0349874A3This record | European Patent Office (EPO) | A3 | |
| US5115024A | United States of America | A | |
| US5124407A | United States of America | A | |
| CA1320786C | Canada | C | |
| EP0349874B1 | European Patent Office (EPO) | B1 | |
| DE68917817D1 | Germany | D1 | |
| JPH0689108B2 | Japan | B2 | |
| DE68917817T2 | Germany | T2 |
28 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Notification of lapseLapsedST | ST | FR | |
| Nl: lapsed or anulled due to non-payment of the annual feeLapsedNLV4 | NLV4 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Fr: translation filedET | ET | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 0349874
- Publication, DOCDB
- 0349874
- Publication, EPODOC
- EP0349874
- Application
- 111585
- Application, DOCDB
- 89111585
- Application, EPODOC
- EP19890111585
Titles3
- English
- A NEW AND IMPROVED METHOD FOR THE PREPARATION OF CROSS-LINKED POLYCARBONATES, AND COMPOSITIONS MADE THEREFROM
- German
- Verfahren zur Herstellung von vernetzten Polycarbonaten und Zusammensetzungen daraus
- French
- Procédé de préparation de polycarbonates réticulés, et compositions
Classification
- CPC, 7
- C08J5/24
- C08G64/30
- C08J2369/00
- C08L69/00
- Y10T428/31507
- Y10T428/31511
- C08G59/00
- IPC, 11
- C08G59 00
- C08G59 18
- C08G59 20
- C08G59 32
- C08G64 00
- C08G64 30
- C08J5 24
- C08L23 02
- C08L63 00
- C08L69 00
- C08L87 00
Designated states5
- Contracting states, 5
- Germany
- France
- United Kingdom
- Italy
- Netherlands (Kingdom of the)