Patent US4066820A successfully refreshed from Google Patents.
US4066820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for coating films
Assignee: Imperial Chemical Industries Ltd
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Filing: 1975-03-24
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Granted: 1978-01-03
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Expires: 1995-03-24
Abstract
Abstract Substrate layers comprising an acrylic or methacrylic copolymer or a copolyester on a polyester film support are coated with an aqueous latex or solution comprising an acrylic or methacrylic copolymer, an unhydrolyzed or partially hydrolyzed polymer or copolymer of vinyl acetate or a copolymer of vinylidene chloride together with a crosslinking component. The coated films may be used in a variety of end uses, including drafting films.
Inventors
- 👤 Roger Sidney Arthur Kelly
- 👤 John Robert Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:17
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/04; B05D7/00; B05D7/02; B05D7/04; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/044; C08J7/046; C08J7/052; G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/93; C08J2367/00; C08J2367/02; C08J2421/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
A process for the production of a coated film, which comprises coating a substrate layer applied to a self-supporting synthetic linear polyester film with an aqueous, cross-linking polymeric latex or solution, wherein said substrate layer comprises: (1) a copolymer formed from ethyl acrylate, methyl methacrylate and methacrylamide, or (2) a copolyester, and the aqueous polymeric latex or solution applied thereto comprises: A. i. one or more polymers or copolymers of one or more of acrylic acid, methacrylic acid, an ester of acrylic acid or methacrylic acid; ii. an unhydrolysed or a partially hydrolysed polymer or copolymer of vinyl acetate; or iii. one or more copolymers of vinylidene chloride; and B. one or more resinous components capable of intra-molecular cross-linking; thereby providing a polyester film having a substrate superimposed thereon coated with said polymeric latex or solution.
Claim 2
Dependent Claim
136 words
A process for the production of a coated film, which comprises coating a substrate layer applied to a self-supporting synthetic linear polyester film with an aqueous, cross-linking polymeric latex or solution, wherein said substrate layer comprises: (1) a copolymer formed from ethyl acrylate, methyl methacrylate and methacrylamide, or (2) a copolyester, and the aqueous polymeric latex or solution applied thereto comprises: A. i. one or more polymers or copolymers of one or more of acrylic acid, methacrylic acid, an ester of acrylic acid or methacrylic acid; ii. an unhydrolysed or a partially hydrolysed polymer or copolymer of vinyl acetate; or iii. one or more copolymers of vinylidene chloride; and B. one or more resinous components capable of intra-molecular cross-linking; thereby providing a polyester film having a substrate superimposed thereon coated with said polymeric latex or solution.
Claim 3
Dependent Claim
18 words
A process according to claim 1, in which the linear polyester film comprises a film of polyethylene terephthalate.
Claim 4
Dependent Claim
44 words
A process according to claim 1, in which, when the aqueous coating latex or solution comprises a polymer or copolymer of an acrylic or methacrylic acid ester, the ester is methyl, ethyl, propyl, isopropyl, butyl, hexyl, heptyl, n-octyl, 2-ethylhexyl or glycidyl acrylate or methacrylate.
Claim 5
Dependent Claim
79 words
A process according to claim 3, in which the copolymer comprises a copolymer of methyl methacrylate, ethyl acrylate and ureido complexes; a copolymer of 55 weight % methyl methacrylate and 45 weight % ethyl acrylate; a copolymer of 48 weight % methyl methacrylate, 40 weight % ethyl acrylate, 10 weight % glycidyl methacrylate and 2 weight % hydroxy ethyl methacrylate; and a copolymer of 50 weight % methyl methacrylate, 45 weight % ethyl acrylate and 5 weight % methacrylamide.
Claim 6
Dependent Claim
49 words
A process according to claim 1, in which, when the aqueous coating latex or solution comprises an unhydrolysed or a partially hydrolysed copolymer of vinyl acetate, the copolymer is formed with a comonomer comprising a dialkyl maleate, 2-ethylhexyl acrylate, ethylene, vinyl chloride or a vinyl ester of versatic acid.
Claim 7
Dependent Claim
105 words
A coated film which comprises a self-supporting synthetic linear polyester film having a substrate layer superimposed thereon, said substrate layer comprising: (1) a copolymer formed from ethyl acrylate, methyl methacrylate and methacrylamide, or (2) a copolyester, and a cross-linked polymeric layer superimposed on the substrate layer comprising: A. i. one or more polymers or copolymers of one or more of acrylic acid, methacrylic acid, an ester of acrylic acid or methacrylic acid; ii. an unhydrolysed or a partially hydrolysed polymer or copolymer of vinyl acetate; or iii. one or more copolymers of vinylidene chloride; and B. one or more resinous components capable of intra-molecular cross-linking.
Claim 8
Dependent Claim
105 words
A coated film which comprises a self-supporting synthetic linear polyester film having a substrate layer superimposed thereon, said substrate layer comprising: (1) a copolymer formed from ethyl acrylate, methyl methacrylate and methacrylamide, or (2) a copolyester, and a cross-linked polymeric layer superimposed on the substrate layer comprising: A. i. one or more polymers or copolymers of one or more of acrylic acid, methacrylic acid, an ester of acrylic acid or methacrylic acid; ii. an unhydrolysed or a partially hydrolysed polymer or copolymer of vinyl acetate; or iii. one or more copolymers of vinylidene chloride; and B. one or more resinous components capable of intra-molecular cross-linking.
Claim 9
Dependent Claim
18 words
A film according to claim 6, in which the linear polyester film comprises a film of polyethylene terephthalate.
Claim 10
Dependent Claim
44 words
A film according to claim 6, in which, when the layer superimposed on the substrate comprises a polymer or copolymer of an acrylic or methacrylic acid ester, the ester is methyl, ethyl, propyl, isopropyl, butyl, hexyl, heptyl, n-octyl, 2-ethylhexyl or glycidyl acrylate or methacrylate.
Claim 11
Dependent Claim
79 words
A film according to claim 8, in which the copolymer comprises a copolymer of methyl methacrylate, ethyl acrylate and ureido complexes; a copolymer of 55 weight % methyl methacrylate and 45 weight % ethyl acrylate; a copolymer of 48 weight % methyl methacrylate, 40 weight % ethyl acrylate, 10 weight % glycidyl methacrylate and 2 weight % hydroxy ethyl methacrylate; and a copolymer of 50 weight % methyl methacrylate, 45 weight % ethyl acrylate and 5 weight % methacrylamide.
Claim 12
Dependent Claim
48 words
A film according to claim 6, in which, when the layer superimposed on the substrate comprises an unhydrolysed or a partially hydrolysed copolymer of vinyl acetate, the copolymer is formed with a comonomer comprising a dialkyl, 2-ethylhexyl acrylate, ethylene, vinyl chloride or a vinyl ester of versatic acid.
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) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |