US3871896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precoated metal sheets and manufacture thereof
Assignee: Kansai Paint Co Ltd
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Filing: 1972-10-04
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Granted: 1975-03-18
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Expires: 1992-10-04
Abstract
Abstract A precoated metal sheet for producing a metal working product which comprises a base metal sheet, a coating film of a thermosetting resin which is formed on the base metal sheet and cured to semi-hardened state having a tackiness of from 2.0 to 40 g/cm width at a temperature of 25* C and at a relative humidity of 75% and a polyolefin sheet adhered to the above semi-hardened coating film; and a method for manufacturing the precoated metal sheet.
Inventors
- 👤 Tadashi Matsudaira
- 👤 Minoru Namiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:58
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B1/00; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B7/00; B32B7/04; B32B7/06; B05D2701/00; B05D2701/10; B32B2250/00; B32B2250/03; B32B2307/00; B32B2307/70; B32B2307/748; B32B2398/00; B32B2398/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31522; Y10T428/31678; Y10T428/31681; Y10T428/31688; Y10T428/31692
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
106 words
A PRECOATED METAL SHEET FOR PRODUCING A METAL WORKING PRODUCT WHICH COMPRISES A BASE METAL SHEET, A COATING FILM OF A THERMOSETTING RESIN WHICH IS FORMED ON THE BASE METAL SHEET AND CURED TO SEMI-HARDENED STATE HAVING A TACKINESS OF FROM 2.0 TO 40 G/CM WIDTH AT A TEMPERATURE OF 25*C AND AT A RELATIVE HUMIDITY OF 75% AND A POLYOLEFIN SHEET REMOVABLY ADHERED TO THE ABOVE SEMI-HARDENED COTAING FILM; SAID BASE METAL SHEET BEING ONE SPECIES SELECTED FROM THE GROUP CONSISTING OF MILD SHEET, ALUMINUM SHEET, CHLOMIUM-PLATED STEEL SHEET AND ZINCPLATE STEEL SHEET; SAID THERMOSETTING RESIN BEING ONE SPECIES SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
106 words
A PRECOATED METAL SHEET FOR PRODUCING A METAL WORKING PRODUCT WHICH COMPRISES A BASE METAL SHEET, A COATING FILM OF A THERMOSETTING RESIN WHICH IS FORMED ON THE BASE METAL SHEET AND CURED TO SEMI-HARDENED STATE HAVING A TACKINESS OF FROM 2.0 TO 40 G/CM WIDTH AT A TEMPERATURE OF 25*C AND AT A RELATIVE HUMIDITY OF 75% AND A POLYOLEFIN SHEET REMOVABLY ADHERED TO THE ABOVE SEMI-HARDENED COTAING FILM; SAID BASE METAL SHEET BEING ONE SPECIES SELECTED FROM THE GROUP CONSISTING OF MILD SHEET, ALUMINUM SHEET, CHLOMIUM-PLATED STEEL SHEET AND ZINCPLATE STEEL SHEET; SAID THERMOSETTING RESIN BEING ONE SPECIES SELECTED FROM THE GROUP CONSISTING OF
Claim 3
Dependent Claim
67 words
THERMOSETTING ACRYLIC RESIN CONTAINING HYDROXYL GROUP IN THE MOLECULE AND HAVING AN ACID VALUE OF 5 TO 20AND HYDROXYL VALUE OF 10 TO 70, 100 PARTS BY WEIGHT OF THIS RESIN BEING USED WITH 20 TO 60 PARTS BY WEIGHT OF METAMINE-FORMALDEHYDE RESIN AND/OR NOT MORE THAN 20 PARTS BY WEIGHT OF BISPHENOL A - EPICHLOROHYDRINE TYPE EPOXY RESIN GAVING AN EPOXY EQUIVALENT OF 300 TO 800,
Claim 4
Dependent Claim
67 words
THERMOSETTING ACRYLIC RESIN CONTAINING HYDROXYL GROUP IN THE MOLECULE AND HAVING AN ACID VALUE OF 5 TO 20AND HYDROXYL VALUE OF 10 TO 70, 100 PARTS BY WEIGHT OF THIS RESIN BEING USED WITH 20 TO 60 PARTS BY WEIGHT OF METAMINE-FORMALDEHYDE RESIN AND/OR NOT MORE THAN 20 PARTS BY WEIGHT OF BISPHENOL A - EPICHLOROHYDRINE TYPE EPOXY RESIN GAVING AN EPOXY EQUIVALENT OF 300 TO 800,
Claim 5
Dependent Claim
38 words
ALKYD-MELAMINE RESIN COMPRISING 100 PARTS BY WEIGHT OF ALKYD RESIN MODIFIED WITH NON-DRYING OIL AND/OR NONDRYING OIL FATTY ACID AND HAVING AN OIL LENGTH OF 10 TO 30 AND 20 TO 60 PARTS BY WEIGHT OF MELAMINE-FORMALDEHYDE RESIN,
Claim 6
Dependent Claim
38 words
ALKYD-MELAMINE RESIN COMPRISING 100 PARTS BY WEIGHT OF ALKYD RESIN MODIFIED WITH NON-DRYING OIL AND/OR NONDRYING OIL FATTY ACID AND HAVING AN OIL LENGTH OF 10 TO 30 AND 20 TO 60 PARTS BY WEIGHT OF MELAMINE-FORMALDEHYDE RESIN,
Claim 7
Dependent Claim
38 words
alkyd-melamine resin comprising 100 parts by weight of alkyd resin modified with non-drying oil and/or non-drying oil fatty acid and having an oil length of 10 to 30 and 20 to 60 parts by weight of melamine-formaldehyde resin,
Claim 8
Dependent Claim
38 words
alkyd-melamine resin comprising 100 parts by weight of alkyd resin modified with non-drying oil and/or non-drying oil fatty acid and having an oil length of 10 to 30 and 20 to 60 parts by weight of melamine-formaldehyde resin,
Claim 9
Dependent Claim
31 words
A precoated metal sheet for producing a metal working product according to claim 1, in which said polyolefin sheet is one species selected from the group consisting of polyethylene and polypropylene.
Claim 10
Dependent Claim
48 words
bisphenol A - epichlorohydrine type epoxy resin having an epoxy equivalent of 800 to 4,000 100 parts by weight of this resin being used with 20 to 60 parts by weight of butyl-etherified phenol-formaldehyde resin or with 20 to 60 parts by weight of butyl-etherified urea-formaldehyde resin, and
Claim 11
Dependent Claim
48 words
bisphenol A - epichlorohydrine type epoxy resin having an epoxy equivalent of 800 to 4,000 100 parts by weight of this resin being used with 20 to 60 parts by weight of butyl-etherified phenol-formaldehyde resin or with 20 to 60 parts by weight of butyl-etherified urea-formaldehyde resin, and
Claim 12
Dependent Claim
49 words
BISPHENOL A - EPICHLOROHYDRINE TYPE EPOXY RESIN HAVING AN EPOXY EQUIVALENT OF 800 TO 4,000 100 PARTS BY WEIGHT OF THIS RESIN BEING USED WITH 20 TO 60 PARTS BY WEIGHT OF BUTYL-ETHERIFIED PHENOL-FORMALDEHYDE RESIN OR WITH 20 TO 60 PARTS BY WEIGHT OF BUTYL-ETHERIFIED UREA-FORMALDEHYDE RESIN RESIN, AND
Claim 13
Dependent Claim
49 words
BISPHENOL A - EPICHLOROHYDRINE TYPE EPOXY RESIN HAVING AN EPOXY EQUIVALENT OF 800 TO 4,000 100 PARTS BY WEIGHT OF THIS RESIN BEING USED WITH 20 TO 60 PARTS BY WEIGHT OF BUTYL-ETHERIFIED PHENOL-FORMALDEHYDE RESIN OR WITH 20 TO 60 PARTS BY WEIGHT OF BUTYL-ETHERIFIED UREA-FORMALDEHYDE RESIN RESIN, AND
Claim 14
Dependent Claim
50 words
OIL FREE POLYESTER-MELAMINE RESIN COMPRISING 100 PARTS BY WEIGHT OF OIL FREE POLYESTER HAVING AN ACID VALUE OF 5 TO 20 AND HYDROXYL EQUIVALENT OF 400 TO 1,300 AND 20 TO 60 PARTS BY WEIGHT OF MELAMINE-FORMALDEHYDE RESIN MODIFIED WITH AN ALIPHATIC MONOALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS.
Claim 15
Dependent Claim
50 words
OIL FREE POLYESTER-MELAMINE RESIN COMPRISING 100 PARTS BY WEIGHT OF OIL FREE POLYESTER HAVING AN ACID VALUE OF 5 TO 20 AND HYDROXYL EQUIVALENT OF 400 TO 1,300 AND 20 TO 60 PARTS BY WEIGHT OF MELAMINE-FORMALDEHYDE RESIN MODIFIED WITH AN ALIPHATIC MONOALCOHOL HAVING FROM 1 TO 4 CARBON ATOMS.
Claim 16
Dependent Claim
50 words
oil free polyester-melamine resin comprising 100 parts by weight of oil free polyester having an acid value of 5 to 20 and hydroxyl equivalent of 400 to 1,300 and 20 to 60 parts by weight of melamine-formaldehyde resin modified with an aliphatic monoalcohol having from 1 to 4 carbon atoms.
Claim 17
Dependent Claim
50 words
oil free polyester-melamine resin comprising 100 parts by weight of oil free polyester having an acid value of 5 to 20 and hydroxyl equivalent of 400 to 1,300 and 20 to 60 parts by weight of melamine-formaldehyde resin modified with an aliphatic monoalcohol having from 1 to 4 carbon atoms.
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |