US4690837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of coating a heated surface
Assignee: Imperial Chemical Industries Ltd
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Filing: 1986-12-18
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Granted: 1987-09-01
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Expires: 2006-12-18
Abstract
Abstract A process of coating a surface of an article which is capable of being heated, by contacting the heated surface of the article with a coating composition comprising an aqueous dispersion of an organic film-forming material which is sterically stabilized and which has a critical coalescence temperature which is lower than the temperature to which the surface of the article is heated. Suitable coating compositions are described.
Inventors
- 👤 Andrew Doroszkowski
- 👤 Maurice W. Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:27
CPC Classifications
B; B05; B05D; B05D1/00; B05D3/00; B05D3/02; B05D7/00; B05D7/14; B05D7/16; C; C09; C09D; C09D5/00; C09D5/02; C09D5/024; C09D5/027; B05D1/18; B05D2401/00; B05D2401/20; B05D3/0218; B05D3/0254
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
69 words
A process of coating a surface of an article which is capable of being heated by contacting the heated surface of the article with a coating composition comprising an aqueous dispersion of an organic film-forming material which is sterically stabilised and which has a critical coalescence temperature which is lower than the temperature to which the surface of the article is heated so that the film-forming material is destabilised.
Claim 2
Dependent Claim
69 words
A process of coating a surface of an article which is capable of being heated by contacting the heated surface of the article with a coating composition comprising an aqueous dispersion of an organic film-forming material which is sterically stabilised and which has a critical coalescence temperature which is lower than the temperature to which the surface of the article is heated so that the film-forming material is destabilised.
Claim 3
Dependent Claim
36 words
A process according to claim 1, wherein the organic film-forming material is sterically stabilised by non-ionic hydrophilic moieties which are derived from poly(ethylene glycol), poly(vinylpyrollidone), or from poly(vinyl alcohol) obtained by the hydrolysis of poly(vinyl acetate).
Claim 4
Dependent Claim
18 words
A process according to claim 2, wherein the moieties are contained in the structure of the film-forming material.
Claim 5
Dependent Claim
28 words
A process according to claim 2, wherein the moieties are contained in a distinct surface active component of the aqueous dispersion which is associated with the film-forming material.
Claim 6
Dependent Claim
21 words
A process according to claim 3, wherein the film-forming material contains at least 1% by weight of the non-ionic hydrophilic moiety.
Claim 7
Dependent Claim
28 words
A process according to claim 4, wherein there is present at least 0.1% of the distinct surface active component by weight based on the weight of film-forming material.
Claim 8
Dependent Claim
21 words
A process according to claim 1, wherein the critical coalescence temperature of the coating composition is in the range 25°-99° C.
Claim 9
Dependent Claim
30 words
A process according to claim 1, wherein the surface to be coated is heated to a temperature at least 5° C. above the critical coalescence temperature of the coating composition.
Claim 10
Dependent Claim
19 words
A process according to claim 1, wherein the surface to be coated is a metal or a plastics material.
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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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |