Patent US5227456A successfully refreshed from Google Patents.
US5227456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wholly aromatic liquid crystalline polymers containing sulfonated ionic monomer units and laminates thereof
Assignee: CNA Holdings LLC
•
Filing: 1992-03-20
•
Granted: 1993-07-13
•
Expires: 2012-03-20
Abstract
Abstract A melt processable wholly aromatic liquid crystalline polymer capable of forming an anisotropic melt phase at a temperature below approximately 400 DEG C. having enhanced adhesion properties containing from approximately 0.05 to approximately 2.0 mole percent of a recurring sulfonated, ionic moiety in the backbone of the polymer. The polymer is useful for the production of laminate structures.
Inventors
- 👤 James P. Shepherd
- 👤 Gerald Farrow
- 👤 Kurt F. Wissbrun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:53
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B15/00; B32B15/04; B32B15/08; B32B15/20; B32B27/28; B32B27/281; B32B27/30; B32B27/304; B32B27/34; B32B27/36; B32B27/365; C; C08; C08G; C08G63/00; C08G63/02; C08G63/60; C08G63/605; C08G63/64; C08G63/68; C08G63/688; C08G64/00; C08G64/04; C08G64/06; C08G64/08; C08G64/081; C08G69/00; C08G69/02; C08G69/26; C08G69/32; C08G69/44; B32B2311/00; B32B2311/24; B32B2327/00; B32B2327/06; B32B2367/00; B32B2369/00; B32B2377/00; B32B2379/00; B32B2379/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31551; Y10T428/31558; Y10T428/31562; Y10T428/31565; Y10T428/31573; Y10T428/31598; Y10T428/31601; Y10T428/31605; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
96 words
A melt processable wholly aromatic liquid crystalline polymer capable of forming an anisotropic melt phase at a temperature below about 400° C. which exhibits improved adhesion to glass, metallic, ceramic, and polymeric substrates, consisting of from approximately 0.05 to approximately 2.0 mole percent of at least one recurring ionic moiety selected from the formulae: ##STR4## in the polymer backbone, wherein M + is a cation and the polymer is selected from the group consisting of wholly aromatic polyesters, poly(ester-carbonates), poly(esteramides) and polyaramides, and wherein the wholly aromatic polyester consists of recurring units of 6-hydroxy-2-naphthoyl and 4-hydroxybenzoyl.
Claim 2
Dependent Claim
96 words
A melt processable wholly aromatic liquid crystalline polymer capable of forming an anisotropic melt phase at a temperature below about 400° C. which exhibits improved adhesion to glass, metallic, ceramic, and polymeric substrates, consisting of from approximately 0.05 to approximately 2.0 mole percent of at least one recurring ionic moiety selected from the formulae: ##STR4## in the polymer backbone, wherein M + is a cation and the polymer is selected from the group consisting of wholly aromatic polyesters, poly(ester-carbonates), poly(esteramides) and polyaramides, and wherein the wholly aromatic polyester consists of recurring units of 6-hydroxy-2-naphthoyl and 4-hydroxybenzoyl.
Claim 3
Dependent Claim
29 words
The liquid crystalline polymer according to claim 1 wherein the cation is selected from the group consisting of sodium, lithium, potassium, zinc, calcium, cadmium, magnesium, barium and mixtures thereof.
Claim 4
Dependent Claim
17 words
The liquid crystalline polymer according to claim 2 wherein the ionic moiety is of the formula: ##STR5##
Claim 5
Dependent Claim
20 words
The liquid crystalline polymer according to claim 3 wherein the concentration of the ionic moiety is approximately 0.5 mole percent.
Claim 6
Dependent Claim
17 words
The liquid crystalline polymer according to claim 2 wherein the ionic moiety is of the formula: ##STR6##
Claim 7
Dependent Claim
86 words
A melt processable liquid crystalline polyester capable of forming an anisotropic melt phase at a temperature below about 375° C. which exhibits improved adhesion to glass, metallic, ceramic, and polymeric substrates, consisting of recurring moieties of (a) from approximately 10 to approximately 90 mole percent of 4-oxybenzoyl; (b) from approximately 90 to approximately 10 mole percent of 6-oxy-2-naphthoyl; and (c) from approximately 0.05 to approximately 2.0 mole percent of at least one recurring ionic moiety selected from the formulae: ##STR7## wherein M + is a cation.
Claim 8
Dependent Claim
86 words
A melt processable liquid crystalline polyester capable of forming an anisotropic melt phase at a temperature below about 375° C. which exhibits improved adhesion to glass, metallic, ceramic, and polymeric substrates, consisting of recurring moieties of (a) from approximately 10 to approximately 90 mole percent of 4-oxybenzoyl; (b) from approximately 90 to approximately 10 mole percent of 6-oxy-2-naphthoyl; and (c) from approximately 0.05 to approximately 2.0 mole percent of at least one recurring ionic moiety selected from the formulae: ##STR7## wherein M + is a cation.
Claim 9
Dependent Claim
27 words
The polymer according to claim 6 wherein the cation is selected from the group consisting of sodium, lithium, potassium, zinc, calcium, cadmium, magnesium, barium and mixtures thereof.
Claim 10
Dependent Claim
18 words
The polymer according to claim 7 wherein the concentration of the ionic moiety is approximately 1.0 mole percent.
Claim 11
Dependent Claim
15 words
The polymer according to claim 6 wherein the ionic moiety is of the formula: ##STR8##
Claim 12
Dependent Claim
17 words
The polymer according to claim 9 which exhibits enhanced adhesion to metal, ceramic, glass and polymeric materials.
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) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |