US3932144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated metallic sheet for use in making a container
Assignee: Toagosei Co Ltd
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Filing: 1974-12-04
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Granted: 1976-01-13
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Expires: 1994-12-04
Abstract
Abstract A coated metallic sheet adapted for use in making a can for foodstuff or other container. This sheet can be made by coating, upon a material sheet, a composition of a resol-type thermosetting phenolformaldehyde resin and a bisphenol "A" type epoxy resin. In said phenol-formaldehyde resin, the ratio by weight of orthocresol to phenol is between 60:40 and 10:90. Said epoxy resin has a mean molecular weight of 800 or more and is used in an amount of 0.2 to 1.5 part by weight per 1 part by weight of said phenol-formaldehyde resin in said composition. This composition used for the sheet displays an excellent adhesiveness particularly with respective to the use of a polyamide type adhesive.
Inventors
- 👤 Takashi Matsubara
- 👤 Yuko Takeuchi
- 👤 Tadashi Tanaka
- 👤 Tatsuro Obi
- 👤 Akio Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:43
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/10; B65; B65D; B65D7/00; B65D7/42; C; C09; C09D; C09D161/00; C09D161/04; C09D161/06; C09D163/00; C09J; C09J5/00; C09J5/10; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12771; Y10T428/12861; Y10T428/12882; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31678; Y10T428/31688; Y10T428/31692
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A coated metallic sheet adapted for use as a container or can which comprises a composition coated on a material sheet selected from the group consisting of cold-rolled steel sheet, very thin nickel-plated steel sheet, aluminium-plated steel sheet and aluminium sheet, said composition consisting of resol-type thermosetting phenol-formaldehyde resin and bisphenol A type epoxy resin at the ratio of one part by weight of said phenol-formaldehyde resin to 0.2 to 1.5 part by weight of said epoxy resin, said phenol-formaldehyde resin comprising orthocresol and phenol at the weight ratio of 60:40 to 10:90, and said epoxy resin having a mean molecular weight of 800 or more.
Claim 2
Dependent Claim
106 words
A coated metallic sheet adapted for use as a container or can which comprises a composition coated on a material sheet selected from the group consisting of cold-rolled steel sheet, very thin nickel-plated steel sheet, aluminium-plated steel sheet and aluminium sheet, said composition consisting of resol-type thermosetting phenol-formaldehyde resin and bisphenol A type epoxy resin at the ratio of one part by weight of said phenol-formaldehyde resin to 0.2 to 1.5 part by weight of said epoxy resin, said phenol-formaldehyde resin comprising orthocresol and phenol at the weight ratio of 60:40 to 10:90, and said epoxy resin having a mean molecular weight of 800 or more.
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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |