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US4837284A
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Novel poly(aryl ether ketone)-polyester block copolymers
Assignee: BP Corp North America Inc
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Filing: 1987-03-31
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Granted: 1989-06-06
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Expires: 2007-03-31
Abstract
Abstract Described herein are novel block copolymers wherein one block is a poly(aryl ether ketone) oligomer and other block is a liquid crystalline polyester oligomer. Processes for the preparation of the subject copolymers are also described. The novel block copolymers display excellent mechanical properties, good high temperatures stability and excellent solvent and chemical resistance.
Inventors
- 👤 Markus Matzner
- 👤 Donald M. Papuga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:25
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/127; C08G63/00; C08G63/66
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
63 words
A block copolymer having the general formula: (AB).sub.n' (ABC).sub.n' or (ABCD).sub.n wherein A and C are oligomers of a poly(aryl ether ketone) having an average molecular weight of approximately 500 to 2,000, B and D are oligomers of a liquid crystalline polyester, with the proviso that A and C are different and B and D are different, and n is 1 or greater.
Claim 2
Dependent Claim
63 words
A block copolymer having the general formula: (AB).sub.n' (ABC).sub.n' or (ABCD).sub.n wherein A and C are oligomers of a poly(aryl ether ketone) having an average molecular weight of approximately 500 to 2,000, B and D are oligomers of a liquid crystalline polyester, with the proviso that A and C are different and B and D are different, and n is 1 or greater.
Claim 3
Dependent Claim
74 words
A block copolymer as defined in claim 1 wherein the poly (aryl ether ketone) contains repeating units of one or more of the following formulae: ##STR30## or naphthylene, X is independently O, ##STR31## or a direct bond and n is an integer of from 0 to 3, b, c, d and e are 0 to 1 and a is an integer of 1 to 4 and preferably d is 0 when b is 1.
Claim 4
Dependent Claim
26 words
A block copolymer as defined in claim 1 wherein the poly (aryl ether ketone) has repeating units selected from one or more of the following: ##STR32##
Claim 5
Dependent Claim
57 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester oligomer block is derived from one or more of the following: p-hydroxy benzoic acid, m-hydroxy benzioc acid, terephthalic acid, isophthalic acid, hydroquinone, phenyl hydroquinone, alkyl substituted hydroquinones, halo substituted hydoquinones, 4,4'-dihydroxydiphenyl ether, resorcinol, 4,4'-biphenol, 2,6-naphthalene diol, 2,6-naphthalene dicarboxylic acid, 6-hydroxy-2-naphthoic acid and 2,6-dihydroxy anthraquinone.
Claim 6
Dependent Claim
22 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester block is a homopolymer derived from p-hydroxy benzoic acid.
Claim 7
Dependent Claim
22 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester block is a copolymer derived from p-hydroxy benzoic acid.
Claim 8
Dependent Claim
27 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester block is a copolymer derived from p-hydroxybenzoic acid, terephthalic and/or isophthalic acids, and 4,4'-biphenol.
Claim 9
Dependent Claim
29 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester block is a copolyester derived from p-hydroxybenzoic acid and 6-hydroxy-2-naphthoic acid in a 75/25 molar ratio.
Claim 10
Dependent Claim
24 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester block is a copolymer derived from terephthalic acid hydroquinone, and methylhydroquinone.
Claim 11
Dependent Claim
24 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester block is a copolymer derived from terephthalic acid, hydroquinone and phenylhydroquinone.
Claim 12
Dependent Claim
27 words
A block copoymer as defined in claim 1 wherein the liquid crystalline polyester block is a copolymer derived from terephthalic acid, 2,6-naphthalene dicarboxylic acid and phenyl hydroquinone.
Claim 13
Dependent Claim
26 words
A block copolymer as defined in claim 1 wherein the liquid crystalline polyester block is a copolymer derivd from terephthalic acid, methyl hydorquinone and meta-hydroxybenzoic acid.
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) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |