US4490499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum flake-resin dispersions
Assignee: EIDP Inc
•
Filing: 1983-02-17
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Granted: 1984-12-25
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Expires: 2003-02-17
Abstract
Abstract Aluminum flake can be dispersed advantageously in a mixture of ethylene glycol and ethylene glycol monobutyl ether for use in solvent-based dispersions of poly(arylene sulfide) and optionally fluorocarbon.
Inventors
- 👤 Jozef T. Huybrechts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:11
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; C08K; C08K3/00; C08K3/02; C08K3/08; C09; C09D; C09D17/00; C09D17/004; C09D17/006; C09D5/00; C09D5/38; C08J2381/00; C08J2381/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
In a solvent-based dispersion comprising poly(phenylene sulfide) and aluminum flakes, the improvement comprising dispersing the aluminum flakes in a mixture of ethylene glycol and ethylene glycol monobutyl ether wherein each of the ethylene glycol and ethylene glycol monobutyl ether are present in amounts of about 40-60% by weight of the two combined.
Claim 2
Dependent Claim
52 words
In a solvent-based dispersion comprising poly(phenylene sulfide) and aluminum flakes, the improvement comprising dispersing the aluminum flakes in a mixture of ethylene glycol and ethylene glycol monobutyl ether wherein each of the ethylene glycol and ethylene glycol monobutyl ether are present in amounts of about 40-60% by weight of the two combined.
Claim 3
Dependent Claim
22 words
The solvent-based dispersion of claim 1 wherein the proportions are, by weight, about 50% ethylene glycol and 50% ethylene glycol monobutyl ether.
Claim 4
Dependent Claim
22 words
The solvent-based dispersion of claim 1 wherein the proportions are, by weight, about 55% ethylene glycol and 45% ethylene glycol monobutyl ether.
Claim 5
Dependent Claim
13 words
The solvent-based dispersion of claim 1 also containing fluorocarbon resin in particulate form.
Claim 6
Dependent Claim
12 words
The solvent-based dispersion of claim 4 wherein the fluorocarbon resin is polytetrafluoroethylene.
Claim 7
Dependent Claim
17 words
The solvent-based dispersion of claim 4 wherein the fluorocarbon resin is a copolymer of tetrafluoroethylene and hexafluoropropylene.
References Cited (Backward Citations)
US988008A
Cited
US2937156A
Cited
US3389105A
Cited
US3856736A
Cited
US3857852A
Cited
US3988160A
Cited
US4026863A
Cited
US4139576A
Cited
US4213886A
Cited
UST988008I4
Cited
US4236934A
Cited
US4287112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-25 | 1988-06-25 | 1988-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-25 | 1992-06-25 | 1992-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-25 | 1996-06-25 | 1996-12-25 | $7700.00 | Window Closed / Lapsed |