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US5124397A
Expired / Lapsed
US
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Resin composition for sliding movement and sealing member comprising same
Assignee: Eneos Corp
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Filing: 1991-04-18
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Granted: 1992-06-23
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Expires: 2011-04-18
Abstract
Abstract Provided is a resin composition for sliding movement, comprising (a) 90-30% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula and (b) 10-70% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 5% by weight when held in air at 350 DEG C. for 30 minutes: <IMAGE>
Inventors
- 👤 Shuji Kanazawa
- 👤 Tetsuo Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:24
CPC Classifications
F; F04; F04C; F04C27/00; F04C27/005; C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K7/00; C08K7/16; C08K7/18
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
76 words
A resin composion for sliding movement, comprising (a) 90-30% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula and (b) 10-70% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 5% by weight when held in air at 350° C. for 30 minutes: ##STR4##
Claim 2
Dependent Claim
76 words
A resin composion for sliding movement, comprising (a) 90-30% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula and (b) 10-70% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 5% by weight when held in air at 350° C. for 30 minutes: ##STR4##
Claim 3
Dependent Claim
23 words
A resin composition for sliding movement as set forth in claim 1, wherein said glassy carbon is prepared by carbonizing a thermosetting resin.
Claim 4
Dependent Claim
97 words
A resin composition for sliding movement, comprising (a) 87-40% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula, (b) 10-50% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 10% by weight when held in air at 350° C. for 30 minutes, and (c) 3-40 % by weight of graphite, provided the total of the components (a), (b) and (c) is 100% by weight: ##STR5##
Claim 5
Dependent Claim
97 words
A resin composition for sliding movement, comprising (a) 87-40% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula, (b) 10-50% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 10% by weight when held in air at 350° C. for 30 minutes, and (c) 3-40 % by weight of graphite, provided the total of the components (a), (b) and (c) is 100% by weight: ##STR5##
Claim 6
Dependent Claim
99 words
A resin composition for sliding movement, comprising (a) 87-40% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula, (b) 10- 50% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 10% by weight when held in air at 350° C. for 30 minutes, and (c) 3-20% by weight of a fluorocabon resin, provided the total of the components (a), (b) and (c) is 100% by weight: ##STR6##
Claim 7
Dependent Claim
99 words
A resin composition for sliding movement, comprising (a) 87-40% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula, (b) 10- 50% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 10% by weight when held in air at 350° C. for 30 minutes, and (c) 3-20% by weight of a fluorocabon resin, provided the total of the components (a), (b) and (c) is 100% by weight: ##STR6##
Claim 8
Dependent Claim
27 words
A resin composition for sliding movement as set forth in any of claims 1 to 4, wherein said thermotropic liquid crystalline polymer is a wholly aromatic polyester.
Claim 9
Dependent Claim
27 words
A resin composition for sliding movement as set forth in claim 5, wherein said wholly aromatic polyester comprises as monomer components hydroxybenzoic acid, biphenol and phthalic acid.
Claim 10
Dependent Claim
123 words
A sealing member to be fitted in end faces of a pair of scrolls disposed in mesh with each other in a scroll type compressor or vacuum pump, said sealing member being formed by a polymer composition containing as essential components (a) 90-50% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula and (b) 10-50% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 5% by weight when held in air at 350° C. for 30 minutes, provided the total of the components (a) and (b) is 100% by weight: ##STR7##
Claim 11
Dependent Claim
123 words
A sealing member to be fitted in end faces of a pair of scrolls disposed in mesh with each other in a scroll type compressor or vacuum pump, said sealing member being formed by a polymer composition containing as essential components (a) 90-50% by weight of a thermotropic liquid crystalline polymer which is a (co)polymer containing at least a monomer unit represented by the following formula and (b) 10-50% by weight of a spherical glassy carbon characterized by a particle fracture surface having a glassy luster and exhibiting a loss in weight of not more than 5% by weight when held in air at 350° C. for 30 minutes, provided the total of the components (a) and (b) is 100% by weight: ##STR7##
Claim 12
Dependent Claim
20 words
A sealing member as set forth in claim 7, wherein said thermotropic liquid crystalline polymer is a wholly aromatic polyester.
Claim 13
Dependent Claim
20 words
A sealing member as set forth in claim 7, wherein said glassy carbon is prepared by carbonizing a thermosetting resin.
References Cited (Backward Citations)
JPS63254159A
Cited
US4851467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |