US3692746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymers of vinylidene chloride and blocked vinyl isocyanates and process for coating articles therewith
Assignee: Dow Chemical Co
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Filing: 1970-11-30
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Granted: 1972-09-19
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Expires: 1990-11-30
Abstract
Abstract This invention relates to polymer compositions, coated articles and processes, and more particularly, to interpolymers of vinylidene chloride and vinyl isocyanates having blocked isocyanate functionalities which interpolymers provide improved coatings on a wide variety of substrate material.
Inventors
- 👤 James T K Woo Jr
- 👤 Thayer A Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/02; C08F214/04; C08F214/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
22 words
The interpolymers of claim 1 wherein said blocked vinyl isocyanate is selected from the group consisting of the materials having the structure:
Claim 2
Dependent Claim
64 words
A process for preparing articles having a self-anchoring coating thereon comprising coating a substrate with an interpolymer consisting essentially of (1) at least about 70 weight percent of vinylidene chloride, (2) between about 1 and 15 weight percent of a blocked vinyl isocyanate and (3) the remainder being one or more copolymerizable ethylenically unsaturated monomers, then heating said coating to regenerate the isocyanate functionalities.
Claim 3
Dependent Claim
22 words
The process of claim 3 wherein said blocked vinyl isocyanate is selected from the group consisting of the materials having the structure:
References Cited (Backward Citations)
US2483194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |