Patent US4264643A successfully refreshed from Google Patents.
US4264643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the adhesion of polyurethane to vinyl resins
Assignee: Congoleum Corp
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Filing: 1979-10-05
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Granted: 1981-04-28
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Expires: 1999-10-05
Abstract
Abstract A method of improving the bond between a vinyl resin material and a polyurethane or acrylated polyurethane resin material which comprises coating a fused vinyl resinous layer with an aqueous acetic acid solution, drying the aqueous coating, applying an uncured polyurethane or acrylated polyurethane layer to the coated surface of the vinyl resin material and exposing the vinyl resinous composition layer and the uncured polyurethane or acrylated polyurethane resin layer to curing conditions to develop a strong and permanent bond between the two layers.
Inventors
- 👤 Guido J. Granata
- 👤 Robert P. Conger
- 👤 Peter J. Rohrbacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:45
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0005; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/3158
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
97 words
A method of improving the bond between a layer of vinyl resinous material and a layer of a resinous composition solution from the group consisting of polyurethane and acrylated polyurethane resin materials which comprises coating a fused vinyl resinous layer with an aqueous acetic acid solution, drying the aqueous coating, applying an uncured polyurethane or acrylated polyurethane layer to the coated surface of the vinyl resin material and exposing the vinyl resinous composition layer and the uncured polyurethane or acrylated polyurethane resin layer to curing conditions to develop a strong and permanent bond between the two layers.
Claim 2
Independent Claim
97 words
A method of improving the bond between a layer of vinyl resinous material and a layer of a resinous composition solution from the group consisting of polyurethane and acrylated polyurethane resin materials which comprises coating a fused vinyl resinous layer with an aqueous acetic acid solution, drying the aqueous coating, applying an uncured polyurethane or acrylated polyurethane layer to the coated surface of the vinyl resin material and exposing the vinyl resinous composition layer and the uncured polyurethane or acrylated polyurethane resin layer to curing conditions to develop a strong and permanent bond between the two layers.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said vinyl resinous composition layer is polyvinyl chloride composition.
Claim 4
Dependent Claim
20 words
The process of claim 1 wherein said polyurethane is a reaction product of methylene-bis (4-cyclohexylisocyanate), polytetramethylene ether glycol and 1,2,3-butanetriol.
Claim 5
Dependent Claim
22 words
The process of claim 1 wherein said polyurethane is a reaction product of trimethyl hexamethylene diisocyanate, polytetramethylene ether glycol and hydroxyethyl methacrylate.
Claim 6
Dependent Claim
24 words
The process of claim 1 wherein said polyurethane is a reaction product of isophorone diisocyanate, a tetrol polyoxyalkylene polyol based on pentaerythritol and erythritol.
Claim 7
Dependent Claim
42 words
The process of claim 1 wherein a polyurethane resin material is used and curing conditions take place at elevated temperatures of from about 260° F. to about 410° F. for a period of time from about 1 minute to about 8 minutes.
Claim 8
Dependent Claim
23 words
The process of claim 1 wherein an acrylated polyurethane resin material is used and curing conditions take place by means of radiation curing.
Claim 9
Dependent Claim
26 words
The process of claim 1 wherein an acrylated polyurethane resin material is used and curing conditions take place by means of mercury vapor arc radiation curing.
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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) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |