US3900616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating a nonporous substrate with a vinylidene chloride polymer using a thermoplastic polyurethane precoat
Assignee: Dow Chemical Co
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Filing: 1972-10-20
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Granted: 1975-08-19
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Expires: 1992-10-20
Abstract
Abstract A process for coating a nonporous substrate with a vinylidene chloride polymer latex using a thermoplastic polyester-type polyurethane precoat wherein the polyurethane has the formula WHERE R is WHERE R'' is WHERE N IS AN INTEGER FROM 1 TO 10, AND WHERE X IS AN INTEGER OF FROM ABOUT 13 TO 40.
Inventors
- 👤 Carl Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:40
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/24; B05D7/26; C; C08; C08J; C08J7/00; C08J7/04; C08J7/042; C08J7/043; C08J7/048; C08J7/052; C09; C09D; C09D175/00; C09D175/04; C09D175/06; C08J2323/00; C08J2323/02; C08J2323/10; C08J2323/12; C08J2427/00; C08J2427/02; C08J2427/04; C08J2427/08; C08J2475/00; C08J2475/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158; Y10T428/31587
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
83 words
IN THE PROCESS OF COATING A SUBSTANTIALLY NONPOROUS SUBSTRATE HAVING A CONTACT ANGLE TO WATER OF FROM 50* TO 75*C. WITH A VINYLIDENE CHLORIDE POLYMER LATEX WHILE USING A POLYURETHANE PRECOAT WHEREIN SAID NONPOROUS SUBSTRATE IS FIRST COATED WITH SAID POLYURETHANE FOLLOWED BY APPLICATION OF AN OVERCOATING OF SAID VINYLIDENE CHLORIDE POLYMER LATEX AND DRYING OF SAID OVERCOATING, THE IMPROVEMENT CONSISTING OF UTILIZING AS SAID PRECOAT THE DRIED RESIDUE OF A COATING CONSISTING ESSENTIALLY OF A THERMOPLASTIC POLYESTER TYPE POLYURETHANE HAVING THE FORMULA
Claim 2
Dependent Claim
83 words
IN THE PROCESS OF COATING A SUBSTANTIALLY NONPOROUS SUBSTRATE HAVING A CONTACT ANGLE TO WATER OF FROM 50* TO 75*C. WITH A VINYLIDENE CHLORIDE POLYMER LATEX WHILE USING A POLYURETHANE PRECOAT WHEREIN SAID NONPOROUS SUBSTRATE IS FIRST COATED WITH SAID POLYURETHANE FOLLOWED BY APPLICATION OF AN OVERCOATING OF SAID VINYLIDENE CHLORIDE POLYMER LATEX AND DRYING OF SAID OVERCOATING, THE IMPROVEMENT CONSISTING OF UTILIZING AS SAID PRECOAT THE DRIED RESIDUE OF A COATING CONSISTING ESSENTIALLY OF A THERMOPLASTIC POLYESTER TYPE POLYURETHANE HAVING THE FORMULA
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said substrate is a polyolefin.
Claim 4
Dependent Claim
39 words
The process of claim 1 wherein said polyurethane is cross-linked sufficiently following application to said substrate and prior to application of said overcoating to cause said polyurethane to remain in generally nonflowable form at temperatures up to about 100*C.
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |