US3911178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Painting of a molded urethane part
Assignee: Davidson Rubber Co Inc
•
Filing: 1974-02-19
•
Granted: 1975-10-07
•
Expires: 1994-02-19
Abstract
Abstract Molded urethane automobile parts containing an internal waxy mold release agent that normally causes ''''fisheying'''' in urethane paints used to topcoat such parts are effectively painted by first applying a thin clear coat of the thermosetting vehicle of a urethane-type paint free of pigment, at least partially curing the clear coating to bind the lubricant or mold release agent, followed by application of the pigmented final color coat of a urethane paint and fully curing both coats.
Inventors
- 👤 Floyd E Mcdowell
- 👤 Michael J Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:52
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; B; B05; B05D; B05D7/00; B05D7/02; B05D7/50; B05D7/52; B05D7/54; B05D7/546; C08J2375/00; C08J2375/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31554; Y10T428/31609
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
IN THE PAINTING WITH A PAINT OF A MOLDED URETHANE PART MADE FROM A MOLDABLE URETHANE FORMULATION CONTAINING A WAX OF A TYPE AND IN AN AMOUNT SUFFICIENT TO SERVE AS A MOLD RELEASE AGENT, SAID PAINT COMPRISING A URETHANE LACQUER VEHICLE WITH A PIGMENT DISPERSED THEREIN, THE IMPROVEMENT COMPRISING: A. CLEANING A SURFACE OF SAID PART TO AT LEAST IN PART REMOVE SAID WAX THEREFROM: B. APPLYING A CLEAR CONTINUOUS BARRIER COAT TO SAID SURFACE OF SAID VEHICLE FREE OF PIGMENT AS A FLIM HAVING A THICKNESS UNDER 0.5 MIL, DRY, C. AT LEAST PARTIALLY CURING SAID BARRIER COAT BY HEATING TO A FLIM TEMPERATURE IN THE RANGE OF 180*-260*F, AND D. APPLYING SAID PAINT AS A FLIM AND CURING SAID FLIM BY BAKING AT A FILM TEMPERATURE IN EXCESS OF 225*F.
Claim 2
Dependent Claim
133 words
IN THE PAINTING WITH A PAINT OF A MOLDED URETHANE PART MADE FROM A MOLDABLE URETHANE FORMULATION CONTAINING A WAX OF A TYPE AND IN AN AMOUNT SUFFICIENT TO SERVE AS A MOLD RELEASE AGENT, SAID PAINT COMPRISING A URETHANE LACQUER VEHICLE WITH A PIGMENT DISPERSED THEREIN, THE IMPROVEMENT COMPRISING: A. CLEANING A SURFACE OF SAID PART TO AT LEAST IN PART REMOVE SAID WAX THEREFROM: B. APPLYING A CLEAR CONTINUOUS BARRIER COAT TO SAID SURFACE OF SAID VEHICLE FREE OF PIGMENT AS A FLIM HAVING A THICKNESS UNDER 0.5 MIL, DRY, C. AT LEAST PARTIALLY CURING SAID BARRIER COAT BY HEATING TO A FLIM TEMPERATURE IN THE RANGE OF 180*-260*F, AND D. APPLYING SAID PAINT AS A FLIM AND CURING SAID FLIM BY BAKING AT A FILM TEMPERATURE IN EXCESS OF 225*F.
Claim 3
Dependent Claim
56 words
The process of claim 1 wherein said barrier coat and said paint contain a solvent and are applied to said part after the part has been heated to a temperature greater than 130*F, and the part is allowed to air flash after application of the barrier coat, and after application of said paint prior to baking.
Claim 4
Dependent Claim
37 words
The process of claim 1 wherein said wax is selected from the group consisting of esters and amides of c12-C24 fatty acids and said film of said paint has a thickness of at least 1 mil, dry.
Claim 5
Dependent Claim
10 words
The process of claim 1 wherein said wax is ethylene-bis-stearamide.
References Cited (Backward Citations)
US3442837A
Cited
US3516957A
Cited
US3639147A
Cited
US3817774A
Cited
US3752695A
Cited
US3698927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |