US4599383A
Expired / Lapsed
US
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Polyamideimide resin composition
Assignee: NTN Engineering Plastics Corp
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Filing: 1984-11-02
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Granted: 1986-07-08
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Expires: 2004-11-02
Abstract
Abstract A polyamideimide resin composition is proposed which includes a polyamideimide resin, a polyetherimide resin and a fluororesin. The composition not only maintains high mechanical strength and electrical insulation of polyamideimide resin, but also has high thermal shock temperature even in a wet state, high antistick quality and melt-processability.
Inventors
- 👤 Fuminori Satoji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A polyamideimide resin composition comprising: a polyamideimide resin represented by the formula: ##STR17## (wherein R 1 is a trivalent aromatic radical having at least one benzene ring; R 2 is a divalent organic radical; and R 3 is hydrogen, a methyl radical or a phenyl radical) a polyetherimide resin represented by the formula: ##STR18## (wherein R 2 is a divalent organic radical and R 4 is a divalent organic radical having at least one benzene ring), and a fluororesin having a crystalline melting point of 250° C. or higher and a specific melt viscosity of 1×10 3 -10 6 poise at 372±1° C., the content of said fluororesin being 10-30% by volume in the entire composition, and the ratio by volume of said polyamideimide resin to said polyetherimide resin being 55:45 to 95:5.
Claim 2
Dependent Claim
133 words
A polyamideimide resin composition comprising: a polyamideimide resin represented by the formula: ##STR17## (wherein R 1 is a trivalent aromatic radical having at least one benzene ring; R 2 is a divalent organic radical; and R 3 is hydrogen, a methyl radical or a phenyl radical) a polyetherimide resin represented by the formula: ##STR18## (wherein R 2 is a divalent organic radical and R 4 is a divalent organic radical having at least one benzene ring), and a fluororesin having a crystalline melting point of 250° C. or higher and a specific melt viscosity of 1×10 3 -10 6 poise at 372±1° C., the content of said fluororesin being 10-30% by volume in the entire composition, and the ratio by volume of said polyamideimide resin to said polyetherimide resin being 55:45 to 95:5.
Claim 3
Dependent Claim
19 words
A polyamideimide resin composition as claimed in claim 1, wherein said fluororesin is a copolymer of tetrafluoroethylene and hexafluoropropylene.
Claim 4
Dependent Claim
16 words
A polyamideimide resin composition as claimed in claim 1, wherein said fluororesin is a perfluoroalcoxy resin.
Claim 5
Dependent Claim
24 words
A polyamideimide resin composition as claimed in claim 1, further comprising not more than 10 percent by volume of an organic or inorganic filler.
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) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |