US5470909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide resin composition and housing for electronic equipment
Assignee: Fujitsu Ltd
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Filing: 1993-08-25
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Granted: 1995-11-28
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Expires: 2013-08-25
Abstract
Abstract A polyamide resin composition including 100 parts by weight of a resin composition containing of 20 to 80% by weight of an aromatic polyamide resin and 80 to 20% by weight of a modified polyphenylene ether resin (the total amount in % by weight of the aromatic polyamide resin and the modified polyphenylene ether resin being 100% by weight) and, incorporated in the resin composition, 0.5 to 30 parts by weight of a liquid-crystalline polymer, 0.01 to 3 parts by weight of a compatibilizing agent and 2 to 40 parts by weight of an inorganic filler and optionally a rubber component. The plate thickness of the resin molded articles may be reduced to 2 mm or less, and even further to 1 mm or less without deterioration of the properties thereof.
Inventors
- 👤 Kota Nishii
- 👤 Kouichi Kimura
- 👤 Masanobu Ishizuka
- 👤 Katsura Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:54
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/305; C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08L77/00; C08L77/10; C08L67/00; C08L77/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
A polyamide resin composition comprising 100 parts by weight of a resin composition comprised of 20% to 80% by weight of an aromatic polyamide resin containing a m-xylene group and 80% to 20% by weight of a modified polyphenylene ether resin, the total amount of the aromatic polyamide resin and the modified polyphenylene ether resin being 100% by weight and, incorporated in said resin composition, based on 100 parts by weight of the resin composition, 0.5 to 30 parts by weight of a copolyester liquid-crystalline polymer, 0.01 to 3 parts by weight of phenylenebisoxazoline and 2 to 40 parts by weight of an inorganic filler, wherein the modified polyphenylene ether resin is produced by reacting a polyphenylene ether resin with an unsaturated aliphatic carboxylic acid or its acid anhydride.
Claim 2
Dependent Claim
129 words
A polyamide resin composition comprising 100 parts by weight of a resin composition comprised of 20% to 80% by weight of an aromatic polyamide resin containing a m-xylene group and 80% to 20% by weight of a modified polyphenylene ether resin, the total amount of the aromatic polyamide resin and the modified polyphenylene ether resin being 100% by weight and, incorporated in said resin composition, based on 100 parts by weight of the resin composition, 0.5 to 30 parts by weight of a copolyester liquid-crystalline polymer, 0.01 to 3 parts by weight of phenylenebisoxazoline and 2 to 40 parts by weight of an inorganic filler, wherein the modified polyphenylene ether resin is produced by reacting a polyphenylene ether resin with an unsaturated aliphatic carboxylic acid or its acid anhydride.
Claim 3
Dependent Claim
22 words
The polyamide resin composition according to claim 1, wherein said copolyester liquid-crystalline polymer has a melting point of 200° to 300° C.
Claim 4
Dependent Claim
27 words
The polyamide resin composition according to claim 1, wherein said polyamide resin containing a m-xylylene group is a product of a polycondensation of m-xylylenediamine with adipic acid.
Claim 5
Dependent Claim
80 words
The polyamide resin composition according to claim 1, which has a fluidity of 120 mm or more in terms of a bar flow length (as measured at a resin temperature of 270° C. and an injection pressure of 1600 kgf/cm 2 ) using a cavity having a depth of 1 mm and a width of 10 mm and provides a molded product having a flexural strength of 100,000 kgf/cm 2 or more and a specific gravity of 1.35 or less.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |