US3607615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite acrylic films for coating
Assignee: Toray Industries Inc
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Filing: 1969-06-02
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Granted: 1971-09-21
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Expires: 1989-06-02
Abstract
Abstract Composite films comprising upper and lower layers of acrylate copolymers adapted to be employed as coating compositions, and coated laminates produced therefrom.
Inventors
- 👤 Hiroshi Hatakeyama
- 👤 Takeo Fusayama
- 👤 Motozo Fujiwara
- 👤 Masahiro Aoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:31
CPC Classifications
B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/266; Y10T428/269; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
26 words
The composite film of claim 1 wherein R2 of the formula representing component (ii) of the upper layer is an alkyl group having 1-8 carbon atoms.
Claim 2
Dependent Claim
26 words
The composite film of claim 1 wherein R2 of the formula representing component (ii) of the lower layer is an alkyl group having 1-8 carbon atoms.
Claim 3
Dependent Claim
29 words
The composite film of claim 1 wherein R2 of the formula representing components (ii) of both the upper and lower layers is an alkyl group having 1-8 carbon atoms.
Claim 4
Dependent Claim
50 words
The composite film of claim 1 wherein component (iii) is a monomer represented by the formula wherein R3 and R4 each are selected from the group consisting of a hydrogen atom, a carboxyl group, a hydrocarbon group having 1-4 carbon atoms, and a carboxy-substituted hydrocarbon group having 1-4 carbon atoms.
Claim 5
Dependent Claim
32 words
The composite film of claim 1 wherein component (iii) is a monomer selected from the group consisting of acrylic acid, methacrylic acid, 2-ethyl acrylic acid, itaconic acid, crotonic acid and maleic acid.
Claim 6
Dependent Claim
26 words
The composite film of claim 1 wherein R2 of the formula representing component (ii) of the upper layer is an alkyl group having 2-4 carbon atoms.
Claim 7
Dependent Claim
26 words
The composite film of claim 1 wherein R2 of the formula representing component (ii) of the lower layer is an alkyl group having 2-4 carbon atoms.
Claim 8
Dependent Claim
30 words
The composite film as claimed in claim 1 wherein R2 of the formula representing components (ii) of both upper and lower layers is an alkyl group having 2-4 carbon atoms.
Claim 9
Dependent Claim
16 words
The composite film of claim 1 wherein component (ii) for the upper layer is n-butyl acrylate.
Claim 10
Dependent Claim
16 words
The composite film of claim 1 wherein component (ii) for the lower layer is ethyl acrylate.
Claim 11
Dependent Claim
24 words
The composite film of claim 1 wherein both of said copolymers of the upper and lower layers are composited while in the molten state.
Claim 12
Dependent Claim
22 words
The composite film of claim 12 wherein the melt viscosities of said copolymers of the upper and lower layers are 100-5000 poises.
Claim 13
Dependent Claim
47 words
The composite film of claim 1 wherein the proportions of monomers in the copolymers are within the following ranges: a. upper layer copolymer, i. 55-80 mole percent ii. 20-45 mole percent b. lower layer copolymer, i. 30-54 mole percent ii. 39-69 mole percent iii. 1-10 mole percent.
Claim 14
Dependent Claim
15 words
A laminate comprising a base plate having applied thereto the composite film of claim 1.
Claim 15
Dependent Claim
19 words
The laminate of claim 15 wherein said baseplate comprises a metallic plate, a plywood sheet, or a plastic sheet.
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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |