US4786709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic high molecular liquid crystals
Assignee: Mitsubishi Chemical Corp
•
Filing: 1987-04-30
•
Granted: 1988-11-22
•
Expires: 2007-04-30
Abstract
Abstract An organic high molecular liquid crystal containing the moiety shown by the following structural formula (1) as the recurring unit and having a number average molecular weight of from 1,000 to 100,000: ##STR1## wherein m represents an integer of from 2 to 10; n represents an integer of from 1 to 12; and --A--represents an aromatic group. The high molecular liquid crystal of this invention can be used for performing optical recording by utilizing the thermooptical effect thereof and also can be used as a fluorescence scattering liquid crystal element since the liquid crystal has a property of emitting fluorescence.
Inventors
- 👤 Kazuyoshi Iimura
- 👤 Naoyuki Koide
- 👤 Mitsutaka Miyabayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:51
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/25; C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C09; C09K; C09K19/00; C09K19/04; C09K19/06; C09K19/08; C09K19/10; C09K19/14; C09K19/16; C09K19/32
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
An organic high molecular liquid crystal containing a moiety represented by the following structural formula (1) as the recurring unit and having a number average molecular weight of from 1,000 to 100,000: ##STR18## wherein m represents an integer of from 2 to 10; n represents an integer of from 1 to 12; and --A-- is selected from the group consisting of ##STR19## (wherein R 1 and R 2 each is selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group having 1 to 3 carbon atoms, an amino group, a methyl-substituted amino group, an alkoxy group having 1 to 3 carbon atoms, a cyano group, and a nitro group).
Claim 2
Dependent Claim
114 words
An organic high molecular liquid crystal containing a moiety represented by the following structural formula (1) as the recurring unit and having a number average molecular weight of from 1,000 to 100,000: ##STR18## wherein m represents an integer of from 2 to 10; n represents an integer of from 1 to 12; and --A-- is selected from the group consisting of ##STR19## (wherein R 1 and R 2 each is selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group having 1 to 3 carbon atoms, an amino group, a methyl-substituted amino group, an alkoxy group having 1 to 3 carbon atoms, a cyano group, and a nitro group).
Claim 3
Dependent Claim
22 words
The organic high molecular liquid crystal as claimed in claim 1, wherein R 1 and R 2 each is a hydrogen atom.
Claim 4
Dependent Claim
15 words
The organic high molecular liquid crystal as claimed in claim 1, wherein --A-- is ##STR20##
Claim 5
Dependent Claim
51 words
The organic high molecular liquid crystal as claimed in claim 1, wherein R 1 is selected from the group consisting of a hydrogen atom, a methyl group and a methoxy group; and R 2 is selected from the group consisting of a hydrogen atom, a cyano group and a nitro group.
Claim 6
Dependent Claim
17 words
The organic high molecular liquid crystal as claimed in claim 1, wherein m is 2 or 3.
Claim 7
Dependent Claim
18 words
The organic high molecular liquid crystal as claimed in claim 1, wherein n is from 2 to 8.
Claim 8
Dependent Claim
33 words
The organic high molecular liquid crystal as claimed in claim 1, wherein the average content (Ct) of trans type bonds to carbon-carbon double bonds in the structural formula (1) is at least 60%.
Claim 9
Dependent Claim
33 words
The organic high molecular liquid crystal as claimed in claim 1, wherein the average content (Ct) of trans type bonds to carbon-carbon double bonds in the structural formula (1) is at least 80%.
Claim 10
Dependent Claim
22 words
The organic high molecular liquid crystal as claimed in claim 1, wherein the number average molecular weight is from 3,000 to 70,000.
Claim 11
Dependent Claim
31 words
The organic high molecular liquid crystal as claimed in claim 1, wherein the transition temperature from a solid phase to an intermediate phase (liquid crystal phase) is at least 50° C.
Claim 12
Dependent Claim
33 words
The organic high molecular liquid crystal as claimed in claim 1, wherein the transition temperature from a solid phase to an intermediate phase (liquid crystal phase) is from 60° C. to 300° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-22 | 1992-05-23 | 1992-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-22 | 1996-05-23 | 1996-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-22 | 2000-05-23 | 2000-11-22 | $7700.00 | Window Closed / Lapsed |