US5027742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercritical fluids as diluents in liquid spray application of coatings
Assignee: Union Carbide Chemicals and Plastics Technology LLC
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Filing: 1989-08-24
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Granted: 1991-07-02
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Expires: 2009-08-24
Abstract
Abstract A liquid coatings application process and apparatus is provided in which supercritical fluids, such as supercritical carbon dioxide fluid, are used to reduce to application consistency viscous coatings compositions to allow for their application as liquid sprays.
Inventors
- 👤 Chinsoo Lee
- 👤 Kenneth L. Hoy
- 👤 Marc D. Donohue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:28
CPC Classifications
B; B05; B05C; B05C1/00; B05D; B05D1/00; B05D1/02; B05D1/025; B05B; B05B12/00; B05B12/14; B05B12/1418; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32; B05D2401/00; B05D2401/90; Y; Y10; Y10S; Y10S239/00; Y10S239/01
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
99 words
An apparatus for the liquid spray application of a coating to a substrate wherein the use of environmentally undesirable organic solvent is minimized, said apparatus comprised of, in combination: (1) means for supplying at least one polymeric compound capable of forming a continuous, adherent coating; (2) means for supplying at least one active organic solvent; (3) means for supplying supercritical carbon dioxide fluid; (4) means for forming a liquid mixture of components supplied from (1)-(3); (5) means for spraying said liquid mixture in the form of droplets having an average diameter of 1 micron or greater onto a substrate.
Claim 2
Independent Claim
99 words
An apparatus for the liquid spray application of a coating to a substrate wherein the use of environmentally undesirable organic solvent is minimized, said apparatus comprised of, in combination: (1) means for supplying at least one polymeric compound capable of forming a continuous, adherent coating; (2) means for supplying at least one active organic solvent; (3) means for supplying supercritical carbon dioxide fluid; (4) means for forming a liquid mixture of components supplied from (1)-(3); (5) means for spraying said liquid mixture in the form of droplets having an average diameter of 1 micron or greater onto a substrate.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 further comprising (6) means for heating any of said components and/or said liquid mixture of components.
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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) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |