Process of preparing liquid crystal compositions containing multiple oriented mesogens
Abstract
The invention is a process for preparing a polymeric liquid crystal composition, e.g., a film or fiber, comprising aligning a nematic or smectic monomeric mesophase (liquid crystal monomer) and photopolymerizing the mesophase, characterized in that the mesophase is aligned in a multi-oriented state prior to photopolymerizing the mesophase. Preferably, alignment is a two or more step process wherein the first step comprises aligning the mesophase in a homeotropic or homogeneous alignment using conventional techniques or linearly polarized light (described below), and the second and subsequent steps comprise aligning a portion of the mesophase using linearly polarized light. In a second embodiment, the invention is a liquid crystal polymer composition, such as a film or fiber, comprising polymeric liquid crystals having aligned multiple oriented mesogens. The composition is preferably in the form of a film or fiber which is adhered to a substrate, part of a liquid crystal display cell, or a free standing polymeric film or fiber.
Term
Term ended
Projected expiry passed 26 February 2011, 15.6 years ago.
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Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0331233A2 | Cites | European Patent Office (EPO) | Y | Search report |
| EP0387059A2 | Cites | European Patent Office (EPO) | YPD | Search report |
| US4810433A | Cites | United States of America | Y | Search report |
30 members in 12 offices
Priority claims8
| Document | Office | Kind | Date |
|---|---|---|---|
| 490115 | United States of America | – | |
| 49011590 | United States of America | A | |
| 49011590 | United States of America | A | |
| 605724 | United States of America | – | |
| 60572490 | United States of America | A | |
| 60572490 | United States of America | A | |
| US19900490115 | – | – | – |
| US19900605724 | – | – | – |
Members30
| Document | Office | Kind | |
|---|---|---|---|
| NO910889D0 | Norway | D0 | |
| CA2036700A1 | Canada | A1 | |
| FI910978A | Finland | A | |
| FI910978A7 | Finland | A7 | |
| FI910978L | Finland | L | |
| NO910889L | Norway | L | |
| EP0445628A2 | European Patent Office (EPO) | A2 | |
| EP0445629A2 | European Patent Office (EPO) | A2 | |
| KR910016903A | Republic of Korea | A | |
| US5073294A | United States of America | A | |
| EP0445628A3 | European Patent Office (EPO) | A3 | |
| EP0445629A3This record | European Patent Office (EPO) | A3 | |
| IL97351D0 | Israel | D0 | |
| JPH04220402A | Japan | A | |
| JPH04227611A | Japan | A | |
| TW198060B | Taiwan Province of China | B | |
| IL97351A | Israel | A | |
| EP0445629B1 | European Patent Office (EPO) | B1 | |
| AT111946T | Austria | T | |
| ATE111946T1 | Austria | T1 | |
| DE69104089D1 | Germany | D1 | |
| EP0445628B1 | European Patent Office (EPO) | B1 | |
| ES2064785T3 | Spain | T3 | |
| DE69106904D1 | Germany | D1 | |
| DE69104089T2 | Germany | T2 | |
| DE69106904T2 | Germany | T2 | |
| JP2691083B2 | Japan | B2 | |
| KR100202769B1 | Republic of Korea | B1 | |
| CA2036700C | Canada | C | |
| JP3124052B2 | Japan | B2 |
59 legal events, as 6 offices reported them to INPADOC
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Patent ceasedCeasedPL | PL | CH | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Se: european patent has lapsedLapsedEUG | EUG | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
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| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| Nl: assignments of ep-patentsNLS | NLS | EP | |
| Transfer of patentPC2A | PC2A | ES | |
| 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 | |
| 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 | |
| Be: change of holder's address20000223 *ALLIANT TECHSYSTEMS INC.:600 SECOND STREET NE, HOPKINS MINNESOTA 55343BECA | BECA | EP | |
| AssignmentPUE | PUE | CH | |
| New agentNV | NV | CH | |
| Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)732E | 732E | GB | |
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| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Validation in greece3014458FG4A | FG4A | GR | |
| Definitive protectionFG2A | FG2A | ES | |
| Se: european patent in force in swedenEAL | EAL | EP | |
| Fr: translation filedET | ET | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
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| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE PATENT HAS BEEN GRANTEDSTAA | STAA | 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
- 0445629
- Publication, DOCDB
- 0445629
- Publication, EPODOC
- EP0445629
- Application
- 102839
- Application, DOCDB
- 91102839
- Application, EPODOC
- EP19910102839
Titles3
- German
- Verfahren zur Herstellung von Flüssigkristallzusammensetzungen enthaltende mehrfach ausgerichteten Mesogenen
- English
- Process of preparing liquid crystal compositions containing multiple oriented mesogens
- French
- Procédé de préparation de compositions liquides cristallines contenant des mésogènes à orientation multiple
Classification
- CPC, 11
- C09K19/38
- C07C255/54
- C07C255/55
- C09K19/12
- C09K19/2007
- C09K19/3852
- C09K2019/0448
- G02F1/133711
- G02F1/133788
- G02F1/133757
- G02F1/133765
- IPC, 16
- C08F2 00
- C07C255 54
- C07C255 55
- C08F2 48
- C08F20 26
- C08F20 30
- C08F20 34
- C08F20 36
- C08F20 38
- C08F220 36
- C09K
- C09K19 12
- C09K19 20
- C09K19 22
- C09K19 38
- G02F1 1337
Designated states1
- Contracting states, 1
- Sweden