US4173558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-aqueous polymeric dispersion alkyl methacrylate copolymers in mixtures of organic solvents and glossy coatings produced therefrom
Assignee: EMCO GRAPHICS Inc
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Filing: 1977-06-30
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Granted: 1979-11-06
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Expires: 1997-06-30
Abstract
Abstract A non-aqueous polymeric dispersion of a methacrylic polymer in a non-aqueous continuous phase comprised of a mixture of organic liquids, one of which is an alcohol, when applied to a suitable substrate, dries to produce a clear, glossy film.
Inventors
- 👤 Charles K. Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:43
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1802; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C08J2333/00; C08J2333/04; C08J2333/06; C08J2333/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
72 words
A chemically stable non-aqueous dispersion which has the property of drying to a clear, glossy finish upon application to a surface which comprises a copolymer consisting of alkyl methacrylates and a mixture of organic liquids, one of which is an alcohol, said copolymer being the disperse phase and said organic liquid constituting the continuous phase of the non-aqueous dispersion, said mixture including substantially no solvent, and no other dispersant, for said copolymer.
Claim 2
Dependent Claim
72 words
A chemically stable non-aqueous dispersion which has the property of drying to a clear, glossy finish upon application to a surface which comprises a copolymer consisting of alkyl methacrylates and a mixture of organic liquids, one of which is an alcohol, said copolymer being the disperse phase and said organic liquid constituting the continuous phase of the non-aqueous dispersion, said mixture including substantially no solvent, and no other dispersant, for said copolymer.
Claim 3
Dependent Claim
19 words
A dispersion according to claim 1 wherein the disperse phase is a copolymer of methyl methacrylate and ethyl methacrylate.
Claim 4
Dependent Claim
30 words
A dispersion according to claim 1 wherein the continuous phase is a mixture of cyclohexane and ethanol in a weight ratio falling in the range of about 3:1 to 1:3.
Claim 5
Dependent Claim
24 words
A dispersion according to claim 1 wherein the continuous phase is a mixture of cyclohexane and ethanol in a weight ratio of about 1:1.
Claim 6
Dependent Claim
23 words
A clear, glossy coating produced by applying a dispersion according to claim 1 to a surface and allowing the dispersion to dry thereon.
Claim 7
Dependent Claim
22 words
A coating according to claim 5 which additionally contains a member selected from the group consisting of dyes, pigments and mixtures thereof.
Claim 8
Dependent Claim
21 words
A dispersion according to claim 1 wherein neither the continuous phase nor the disperse phase includes effective amounts of stabilizing substances.
Claim 9
Independent Claim
57 words
The method comprising dispersing a copolymer consisting of alkyl methacrylates in a mixture of organic liquids, one of which is an alcohol, to form a chemically stable, non-aqueous dispersion in which said copolymer is the disperse phase and said mixture is the continuous phase, said mixture including substantially no solvent and no other dispersant for said copolymer.
Claim 10
Independent Claim
57 words
The method comprising dispersing a copolymer consisting of alkyl methacrylates in a mixture of organic liquids, one of which is an alcohol, to form a chemically stable, non-aqueous dispersion in which said copolymer is the disperse phase and said mixture is the continuous phase, said mixture including substantially no solvent and no other dispersant for said copolymer.
Claim 11
Dependent Claim
20 words
The method according to claim 8 wherein the disperse phase is a copolymer consisting of methyl methacrylate and ethyl methacrylate.
Claim 12
Dependent Claim
30 words
The method according to claim 8 wherein the continuous phase is a mixture of cyclohexane and ethanol in a weight ratio falling in a range of about 3:1 to 1:3.
Claim 13
Dependent Claim
16 words
The method according to claim 10 wherein the ratio of cyclohexane to ethanol is about 1:1.
Claim 14
Dependent Claim
21 words
The method according to claim 8 further comprising applying said dispersion to a surface and allowing said dispersion to dry thereon.
Claim 15
Dependent Claim
23 words
The method according to claim 12 wherein the dispersion includes a member selected from the group consisting of dyes, pigments and mixtures thereof.
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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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |