US5997765A
Expired / Lapsed
US
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Liquid crystal polyester resin composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1997-02-19
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Granted: 1999-12-07
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Expires: 2017-02-19
Abstract
Abstract A liquid crystal polyester resin composition comprising a liquid crystal polyester (A) in a continuous phase and a rubber having a functional group reactive with the liquid crystal polyester (B) in a dispersed phase. A liquid crystal polyester resin composition of the present invention is excellent in heat resistance, molding processability and mechanical properties, particularly in impact resistance and tensile property, capable of improving anisotropy of a molded article. Furthermore, film formation processability can be improved at a low cost, and a film produced for the composition has excellent gas barrier property, drawing property and flexibility.
Inventors
- 👤 Motonobu Furuta
- 👤 Takanari Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:18
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; B; B32; B32B; B32B27/00; B32B27/36; B65; B65D; B65D65/00; B65D65/02; B65D65/38; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L67/00; C08L67/02; C08L67/03; C08L67/04; C08J2367/00; C08J2367/04; C08L2201/00; C08L2201/02; C08L2203/00; C08L2203/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
68 words
A liquid crystal polyester resin composition comprising 65.0 to 99.9 weight % of a liquid crystal polyester (A) in a continuous phase and 35.0 to 0.1 weight % of a rubber (B) having a functional group reactive with the liquid crystal polyester in a dispersed phase, wherein said liquid crystal polyester (A) is a member selected from the group of combinations of repeat units (I)-(VI) consisting of: ##STR15##
Claim 2
Dependent Claim
68 words
A liquid crystal polyester resin composition comprising 65.0 to 99.9 weight % of a liquid crystal polyester (A) in a continuous phase and 35.0 to 0.1 weight % of a rubber (B) having a functional group reactive with the liquid crystal polyester in a dispersed phase, wherein said liquid crystal polyester (A) is a member selected from the group of combinations of repeat units (I)-(VI) consisting of: ##STR15##
Claim 3
Dependent Claim
32 words
The liquid crystal polyester resin composition according to claim 1 comprising 70 to 98 weight % of the liquid crystal polyester (A) and 30 to 2 weight % of the rubber (B).
Claim 4
Dependent Claim
35 words
The liquid crystal polyester resin composition according to claim 1, wherein the functional group reactive with the liquid crystal polyester in the rubber (B) is an epoxy group, an oxazolyl group or an amino group.
Claim 5
Dependent Claim
28 words
A liquid crystal polyester resin composition according to claim 1, wherein the functional group reactive with the liquid crystal polyester in the rubber (B) is an epoxy group.
Claim 6
Dependent Claim
26 words
A liquid crystal polyester resin composition according to claim 4, wherein the rubber (B) comprises (meth)acrylate-ethylene-unsaturated carboxylic acid glycidyl ester and/or unsaturated glycidyl ether copolymer rubber.
Claim 7
Dependent Claim
41 words
A liquid crystal polyester resin composition according to claim 5, wherein (meth)acrylate comprises at least one selected from the group consisting of methyl acrylate, methyl methacrylate, n-butyl acrylate, n-butyl methacryalte, tert-butyl acrylate, tert-butyl methacrylate and 2-ethyl hexyl acrylate, 2-ethyl hexyl methacrylate.
Claim 8
Dependent Claim
61 words
A liquid crystal polyester resin composition according to claim 5, wherein the rubber (B) is a copolymer comprising more than 40 but less than 97 weight % of (meth)acrylate unit, more than 3 but less than 50 weight % of an ethylene unit, and 0.1 to 30 weight % of an unsaturated carboxylic acid glycidyl ester and/or unsaturated glycidyl ether unit.
Claim 9
Dependent Claim
26 words
A liquid crystal polyester resin composition according to claim 4, wherein the Mooney viscosity of the rubber (B) is in the range of 3 to 70.
Claim 10
Dependent Claim
26 words
A liquid crystal polyester resin composition according to claim 5, wherein the Mooney viscosity of the rubber (B) is in the range of 3 to 30.
Claim 11
Dependent Claim
40 words
A liquid crystal polyester resin composition according to claim 4, wherein the rubber (B) is obtained by epoxydating a copolymer or a hydrogenated copolymer comprising sequences of a vinyl aromatic hydrocarbon compound (a) and sequences of a conjugated diene compound.
Claim 12
Dependent Claim
32 words
A liquid crystal polyester resin composition according to claim 1, wherein the liquid crystal polyester (A) comprises at least 30 mole % of a repeating unit represented by the below mentioned formula:
Claim 13
Dependent Claim
31 words
A liquid crystal polyester resin composition according to claim 1, wherein the liquid crystal polyester (A) is obtained by the reaction of aromatic dicarboxylic acid, aromatic diol and aromatic hydroxycarboxylic acid.
Claim 14
Dependent Claim
31 words
A liquid crystal polyester resin composition according to claim 1, wherein the liquid crystal polyester (A) is obtained by the reaction of a combination of different kinds of aromatic hydroxycarboxylic acids.
Claim 15
Dependent Claim
22 words
A liquid crystal polyester resin composition according to claim 1, wherein the liquid crystal polyester (A) comprises the below-mentioned repeating unit combination:
Claim 16
Dependent Claim
22 words
A liquid crystal polyester resin composition according to claim 1, wherein the liquid crystal polyester (A) comprises the below-mentioned repeating unit combination:
Claim 17
Dependent Claim
22 words
A liquid crystal polyester resin composition according to claim 1, wherein the liquid crystal polyester (A) comprises the below-mentioned repeating unit combination:
Claim 18
Dependent Claim
22 words
A liquid crystal polyester resin composition according to claim 1, wherein the liquid crystal polyester (A) comprises the below-mentioned repeating unit combination:
Claim 19
Dependent Claim
14 words
A film obtained comprising the liquid crystal polyester resin composition according to claim 1.
Claim 20
Dependent Claim
25 words
A film obtained by single-axis drawing or two-axis drawing of the liquid crystal polyester resin composition according to claim 1 melt-extruded from a T die.
Claim 21
Dependent Claim
17 words
A film obtained by inflation molding of the liquid crystal polyester resin composition according to claim 1.
Claim 22
Dependent Claim
43 words
A laminated film comprising a film which comprises the liquid crystal polyester resin composition according to claim 1 and a film which comprises a thermoplastic resin excluding the liquid crystal polymer and the liquid crystal polyester resin composition, having at least two layers.
Claim 23
Dependent Claim
51 words
A laminated film according to claim 21, wherein the thermoplastic resin comprises at least one selected from the group consisting of polyethylene, polypropylene, polystyrene, polycarbonate, polyethylene terephthalate, polybuthylene terephthalate, polyacetal, polyamide polyphenylene ether, polyether sulfone, ehylene-α-olefin copolymer, polyvinyl chloride, polyvinylidene chloride, polyacetal, polyphenylene sulfide, ethylene-vinyl acetate copolymer and a fluorine resin.
Claim 24
Dependent Claim
42 words
A laminated film according to claim 22, produced by coextrusion of a liquid crystal polyester resin composition and a thermoplastic resin excluding the liquid crystal polyester and the liquid crystal polyester resin composition with a coextrusion die having two or more layers.
Claim 25
Dependent Claim
16 words
A wrapping material for pouching comprising the liquid crystal polyester resin composition according to claim 1.
Claim 26
Dependent Claim
17 words
A wrapping material for electronic parts comprising the liquid crystal polyester resin composition according to claim 1.
Claim 27
Dependent Claim
26 words
A wrapping material for electronic parts comprising a cover tape and emboss carrier tape obtainable from the liquid crystal polyester resin composition according to claim 1.
Claim 28
Dependent Claim
66 words
A liquid crystal polyester resin composition container obtained with the liquid crystal polyester resin composition according to claim 1 with the ratio of the depth of the container and the aperture of the container of 1/10 or more in a round container, and with the ratio of the depth of the container and the longest diagonal at the aperture of the container of 1/10 or more.
Claim 29
Dependent Claim
39 words
A liquid crystal polyester resin composition container and lid each of which comprises a sheet or a film comprising the liquid crystal polyester resin composition according to claim 1 adhered to and closely sealed together to accomodate contents therein.
Claim 30
Dependent Claim
16 words
A retort container which is the liquid crystal polyester resin composition container according to claim 27.
Claim 31
Dependent Claim
15 words
A hollow molded container comprising the liquid crystal polyester resin composition according to claim 1.
Claim 32
Dependent Claim
31 words
A blow molded container comprising a layer of the liquid crystal polyester resin composition according to claim 1 and a layer of a thermoplastic resin composition excluding the liquid crystal polyester.
Claim 33
Dependent Claim
13 words
A fuel container which is the blow molded container according to claim 31.
Claim 34
Dependent Claim
32 words
A fuel container according to claim 32, wherein the thermoplastic resin is a high density polyethylene having a density of 0.940 to 0.980 and a limiting viscosity of 2 to 7 dl/g.
Claim 35
Dependent Claim
16 words
A retort container which is the liquid crystal polyester resin composition container according to claim 28.
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) | 2002-12-06 | 2003-06-07 | 2003-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-06 | 2007-06-07 | 2007-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-06 | 2011-06-07 | 2011-12-07 | $7700.00 | Window Closed / Lapsed |