US3833458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-polymer composites and methods for their preparation
Assignee: M&T Chemicals Inc
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Filing: 1972-01-03
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Granted: 1974-09-03
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Expires: 1992-01-03
Abstract
Abstract GROUPS. One surface of the polymer layer has been modified by oxidation or chemical etching agents. Between the modified surface of the polymer layer and the vinyl chloride-containing polymer is an adhesive comprising a mixture of a natural or synthetic rubber and a phenolaldehyde resin. Heating the composite above 120*C. for a short period of time yields a unitary bonded structure. Strong durable bonds are formed between metals and vinyl chloride-containing polymers by maintaining at a surface of the metal a layer of polymer that contains pendant carboxylic acid
Inventors
- 👤 C Bierman
- 👤 J Welks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:16
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C09; C09J; C09J161/00; C09J161/04; C09J161/06; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L7/00; C08L9/00; C08L9/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
14 words
A bonded composite as described in claim 1 wherein the metallic surface is chromium.
Claim 2
Dependent Claim
64 words
a polymeric layer wherein at least 3 percent by weight of the repeating units are derived from an ethylenically unsaturated carboxylic acid containing up to 12 carbon atoms and the carboxylic acid groups are present as pendant groups on the polymer, said polymeric layer having at least one surface which has been modified by treatment with a flame, corona discharge or chemical etching agent
Claim 3
Dependent Claim
16 words
A bonded composite as described in claim 1 wherein the ethylenically unsaturated acid is acrylic acid.
Claim 4
Dependent Claim
50 words
an adhesive composition in contact with the modified surface of said polymeric layer, said adhesive composition comprising 10 to 50 percent by weight of a synthetic diene rubber, containing at least 20 percent by weight of acrylonitrile, and between 50 and 90 percent by weight of a cross-linkable phenol-aldehyde resin
Claim 5
Dependent Claim
28 words
A bonded composite as described in claim 1 wherein the layer of polymer containing an ethylenically unsaturated acid has been modified by treatment with an electrical corona discharge.
Claim 6
Dependent Claim
16 words
a polymer wherein at least 50 percent of the repeating units are derived from vinyl chloride.
Claim 7
Dependent Claim
22 words
A bonded composite as described in claim 1 wherein the phenol-aldehyde resin is a phenol-formaldehyde resin modified with an ethylenically unsaturated oil.
Claim 8
Dependent Claim
28 words
A bonded composite as described in claim 1 wherein the rubber is a butadiene-acrylonitrile copolymer containing at least 20 percent by weight of repeating units derived from acrylontrile.
References Cited (Backward Citations)
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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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |