US3762940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hexa (alkoxymethyl) melamine modified hydroxylated flouroplymer coated articles
Assignee: EIDP Inc
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Filing: 1971-09-09
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Granted: 1973-10-02
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Expires: 1991-09-09
Abstract
Abstract Described and claimed are combinations of certain hydroxylated fluoropolymers and hexa(alkoxymethyl)melamines, both in the form of crosslinkable liquid mixtures and in the form of scratchresistant, strongly adherent cross-linked coatings, methods of applying the coatings from the liquid mixtures, and solid objects, especially plastic objects, carrying the coatings.
Inventors
- 👤 M Bechtold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:28
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/04; C08L33/14; C08L33/16; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/16; C08K5/34; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C08L61/00; C08L61/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/3154; Y10T428/31678; Y10T428/31692; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
16 words
A coated sheet according to claim 1 wherein the transparent plastic sheet is an acrylic polymer.
Claim 2
Dependent Claim
16 words
A coated sheet according to claim 1 wherein the transparent plastic sheet is a poly(ethylene terephthalate).
Claim 3
Dependent Claim
15 words
A coated sheet according to claim 1 wherein the transparent plastic sheet is a polycarbonate.
Claim 4
Dependent Claim
15 words
A coated sheet according to claim 1 wherein the transparent plastic sheet is a polychloral.
Claim 5
Dependent Claim
21 words
The coated sheet according to claim 1 in which the crosslinked coating has a top coating of a silica-containing hydroxylated fluoropolymer.
Claim 6
Dependent Claim
121 words
A corrodible metal coated with an adherent coating of a crosslinked polymer comprising chains of 1) a preformed fluoropolymer which is a copolymer of a fluoroolefin with a member of the group consisting of hydroxyalkyl vinyl ether, olefinic alcohol and hydrolyzable ester of an olefinic alcohol, said ester being hydrolyzed after polymerization with the fluoroolefin, said fluoropolymer carrying a plurality of hydroxyl groups each of which is attached to a carbon atom carrying at least one hydrogen, said fluoropolymer having a unit weight greater than 700 per hydroxyl group and containing at least about 20 percent by weight of fluorine, the fluorine atoms being attached to the main chain carbons of the fluoropolymer, and 2) a crosslinking agent of the formula
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |