US4123401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finishes having improved scratch resistance prepared from compositions of fluoropolymer, mica particles or metal flake, a polymer of monoethylenically unsaturated monomers and a liquid carrier
Assignee: EIDP Inc
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Filing: 1978-02-02
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Granted: 1978-10-31
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Expires: 1998-02-02
Abstract
Abstract Compositions containing (a) fluoropolymer, (b) mica particles, mica particles coated with pigment, or metal flake, (c) a polymer of ethylenically unsaturated monomers, and (d) a liquid carrier Are useful for coating metal, especially cookware, to give lubricious surfaces.
Inventors
- 👤 Jacques M. L. Berghmans
- 👤 Eva M. Vary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:39
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18; A; A47; A47J; A47J36/00; A47J36/02; C08; C08K; C08K3/00; C08K3/02; C08K3/08; C08K3/34; C08K5/00; C08K5/01; C08K5/04; C08K5/05; C08K5/07; C08K9/00; C08K9/02; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L57/00; C09D133/00; C09D133/04; C08L27/12; C08L33/00; C08L33/04; C08L33/06; C08L33/062; C08L33/066; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
149 words
A coating composition consisting essentially of (a) about 80-99.8%, by weight of the total of (a) and (b), of a particulate polymer polymerized or copolymerized from monomers selected from one or more monoethylenically unsaturated hydrocarbon monomers and hydrocarbon ether monomers, said monomers being completely substituted with fluorine atoms or a combination of fluorine atoms and chlorine atoms; (b) about 0.2-20%, by weight of the total of (a) and (b), of mica particles, mica particles coated with pigment, or metal flake; the total of (a) and (b) equaling 100%; (c) about 2-300%, by weight of (a), of one or more polymers of monoethylenically unsaturated monomers which depolymerize and whose depolymerization products vaporize in the temperature range of about 150° C below the fusion temperature of (a) to about the decomposition temperature of (a); and (d) a liquid carrier, said coating composition being suitable for forming finishes having improved scratch resistance.
Claim 2
Dependent Claim
149 words
A coating composition consisting essentially of (a) about 80-99.8%, by weight of the total of (a) and (b), of a particulate polymer polymerized or copolymerized from monomers selected from one or more monoethylenically unsaturated hydrocarbon monomers and hydrocarbon ether monomers, said monomers being completely substituted with fluorine atoms or a combination of fluorine atoms and chlorine atoms; (b) about 0.2-20%, by weight of the total of (a) and (b), of mica particles, mica particles coated with pigment, or metal flake; the total of (a) and (b) equaling 100%; (c) about 2-300%, by weight of (a), of one or more polymers of monoethylenically unsaturated monomers which depolymerize and whose depolymerization products vaporize in the temperature range of about 150° C below the fusion temperature of (a) to about the decomposition temperature of (a); and (d) a liquid carrier, said coating composition being suitable for forming finishes having improved scratch resistance.
Claim 3
Dependent Claim
25 words
The composition of claim 1 in which (b) is present at a concentration of about 2-15%, by weight of the total of (a) and (b).
Claim 4
Dependent Claim
25 words
The composition of claim 1 in which (b) is present at a concentration of about 8-12%, by weight of the total of (a) and (b).
Claim 5
Dependent Claim
12 words
The composition of claim 1 wherein the polymer in (a) is PTFE.
Claim 6
Dependent Claim
30 words
The composition of claim 1 wherein the mica particles in (b) are coated with an oxide of titanium, zirconium, aluminum, zinc, antimony, tin, iron, copper, nickel, cobalt, chromium or vanadium.
Claim 7
Dependent Claim
19 words
The composition of claim 1 wherein the polymer in (c) contains one or more monoethylenically unsaturated carboxylic acid units.
Claim 8
Dependent Claim
13 words
The composition of claim 1 wherein the polymer in (c) is in solution.
Claim 9
Dependent Claim
21 words
The composition of claim 1 wherein the polymer in (c) has an average particle size of less than about 1.0 micron.
Claim 10
Dependent Claim
20 words
The composition of claim 1 wherein the polymer in (c) has an average particle size of less than 0.5 micron.
Claim 11
Dependent Claim
21 words
The composition of claim 1 wherein the polymer in (c) has an average particle size of less than about 0.3 micron.
Claim 12
Dependent Claim
61 words
The composition of claim 6 wherein the polymer in (c) is of one or more of an alkyl acrylate or methacrylate having 1-8 carbon atoms in the alkyl group, styrene, alpha-methylstyrene, vinyl toluene and the acid units is of acrylic acid, methacrylic acid, fumaric acid, itaconic acid, or maleic acid, optionally esterified with a glycidyl ester of 4-14 carbon atoms (total).
Claim 13
Dependent Claim
119 words
The composition of claim 1 wherein the polymer in (c) is (1) a methyl methacrylate/acrylate/methacrylic acid terpolymer, (2) a butyl acrylate/methyl methacrylate/acrylic acid terpolymer, esterified with a mixed ester having the structure ##STR2## where R 1 is CH 3 and R 2 and R 3 are lower alkyl groups, R 1 , r 2 and R 3 containing a total of 7-9 carbon atoms (3 ) a styrene/methyl methacrylate/acrylic acid terpolymer esterified with a mixed ester having the structure ##STR3## where R 1 is CH 3 and R 2 and R 3 are lower alkyl groups, R 1 , r 2 and R 3 containing a total of 7-9 carbon atoms or (4 a methyl methacrylate/ethyl acrylate/methacrylic acid terpolymer.
Claim 14
Dependent Claim
12 words
The composition of claim 1 wherein the carrier in (d) is water.
Claim 15
Dependent Claim
40 words
The composition of claim 1 wherein the polymer in (a) is PTFE, the mica particles in (b) are coated with titanium dioxide, the polymer in (c) is a methyl methacrylate/ethyl acrylate/methacrylic acid terpolymer and the carrier in (d) is water.
Claim 16
Independent Claim
136 words
A method for improving the scratch resistance of a finish derived from a coating composition containing (a) a particulate polymer polymerized or copolymerized from monomers selected from one or more monoethylenically unsaturated hydrocarbon monomers and hydrocarbon ether monomers, said monomers being completely substituted with fluorine atoms or a combination of fluorine atoms and chlorine atoms; (b) one or more polymers of monoethylenically unsaturated monomers which depolymerize and whose depolymerization products vaporize in the temperature range of about 150° C below the fusion temperature of (a) to about the decomposition temperature of (a); and (c) a liquid carrier, the method comprising adding to the composition, before it is applied, mica, mica coated with a pigment, or metal flake, in the amount of 0.2-20%, by weight of the total of fluoropolymer and mica, coated mica, or metal flake.
Claim 17
Independent Claim
136 words
A method for improving the scratch resistance of a finish derived from a coating composition containing (a) a particulate polymer polymerized or copolymerized from monomers selected from one or more monoethylenically unsaturated hydrocarbon monomers and hydrocarbon ether monomers, said monomers being completely substituted with fluorine atoms or a combination of fluorine atoms and chlorine atoms; (b) one or more polymers of monoethylenically unsaturated monomers which depolymerize and whose depolymerization products vaporize in the temperature range of about 150° C below the fusion temperature of (a) to about the decomposition temperature of (a); and (c) a liquid carrier, the method comprising adding to the composition, before it is applied, mica, mica coated with a pigment, or metal flake, in the amount of 0.2-20%, by weight of the total of fluoropolymer and mica, coated mica, or metal flake.
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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) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |