US4150008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorocarbon polymer-pigment coating compositions stabilized against discoloration
Assignee: EIDP Inc
•
Filing: 1977-08-02
•
Granted: 1979-04-17
•
Expires: 1997-08-02
Abstract
Abstract The discoloration of finishes derived from coating compositions containing (a) fluorocarbon polymer, along with (b) pigment, and (c) a liquid carrier, Can be significantly reduced by adding to the composition, before it is applied, a compound which decomposes to an oxide or hydroxide of a particular metal.
Inventors
- 👤 Eustathios Vassiliou
- 👤 William Van Hoeven, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:23
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/28; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/09; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
182 words
A composition suitable for making a light-colored fused fluorocarbon polymer coating, said composition consisting essentially of (a) about 25%-96%, by weight of the total of (a) and (b), of a fluorocarbon polymer polymerized or copolymerized from monomers selected from 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, the polymer having a number average molecular weight of at least 20,000; (b) about 2%-75%, by weight of the total of (a) and (b), of pigment; the amounts of (a) and (b) totaling 100%; (c) enough of at least one compound of at least one of the metals ______________________________________
(c) enough of at least one compound of at least one of
the metals
______________________________________
cobalt cerium
iron and
manganese
______________________________________ which compound decomposes in the temperature range of about 100° C.-500° C. to give at least 0.2%, by weight of the metal in the compound, of an oxide or hydroxide, to provide at least about 0.005 parts of metal per hundred of (a); and (d) a liquid carrier.
Claim 2
Dependent Claim
182 words
A composition suitable for making a light-colored fused fluorocarbon polymer coating, said composition consisting essentially of (a) about 25%-96%, by weight of the total of (a) and (b), of a fluorocarbon polymer polymerized or copolymerized from monomers selected from 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, the polymer having a number average molecular weight of at least 20,000; (b) about 2%-75%, by weight of the total of (a) and (b), of pigment; the amounts of (a) and (b) totaling 100%; (c) enough of at least one compound of at least one of the metals ______________________________________
(c) enough of at least one compound of at least one of
the metals
______________________________________
cobalt cerium
iron and
manganese
______________________________________ which compound decomposes in the temperature range of about 100° C.-500° C. to give at least 0.2%, by weight of the metal in the compound, of an oxide or hydroxide, to provide at least about 0.005 parts of metal per hundred of (a); and (d) a liquid carrier.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the polymer in (a) is a perfluoroolefin polymer.
Claim 4
Dependent Claim
11 words
The composition of claim 2 wherein the perfluoroolefin polymer is polytetrafluoroethylene.
Claim 5
Dependent Claim
13 words
The composition of claim 3 wherein the compound in (c) is of cerium.
Claim 6
Dependent Claim
23 words
The composition of claim 4 wherein the cerium compound is a cerium nitrate, or a salt of cerium hydroxide and an organic acid.
Claim 7
Dependent Claim
10 words
The composition of claim 5 wherein the carrier is water.
Claim 8
Dependent Claim
12 words
An article bearing a fused coating of the composition of claim 1.
Claim 9
Dependent Claim
12 words
An article bearing a fused coating of the composition of claim 2.
Claim 10
Dependent Claim
12 words
An article bearing a fused coating of the composition of claim 3.
Claim 11
Dependent Claim
12 words
An article bearing a fused coating of the composition of claim 4.
Claim 12
Dependent Claim
12 words
An article bearing a fused coating of the composition of claim 5.
Claim 13
Dependent Claim
12 words
An article bearing a fused coating of the composition of claim 6.
Claim 14
Independent Claim
104 words
A method for lightening the color of a fused fluorocarbon polymer coating by reducing the amount of carbonaceous residue in said coating, said method comprising mixing with the composition from which the coating is derived, before it is applied and fused, enough of at least one compound of at least one of the metals ______________________________________
cobalt cerium
iron and
manganese
______________________________________ which compound decomposes in the range of about 100° C.-500° C. to give at least 0.2%, by weight of the metal in the compound, of an oxide or hydroxide, to provide at least about 0.005 parts of metal per hundred of fluorocarbon polymer.
Claim 15
Independent Claim
104 words
A method for lightening the color of a fused fluorocarbon polymer coating by reducing the amount of carbonaceous residue in said coating, said method comprising mixing with the composition from which the coating is derived, before it is applied and fused, enough of at least one compound of at least one of the metals ______________________________________
cobalt cerium
iron and
manganese
______________________________________ which compound decomposes in the range of about 100° C.-500° C. to give at least 0.2%, by weight of the metal in the compound, of an oxide or hydroxide, to provide at least about 0.005 parts of metal per hundred of fluorocarbon polymer.
References Cited (Backward Citations)
US2075543A
Cited
US2681324A
Cited
GB751265A
Cited
US2784170A
Cited
US2879257A
Cited
US2906730A
Cited
US2888364A
Cited
US2955099A
Cited
US2961341A
Cited
GB961671A
Cited
US3419522A
Cited
GB1222530A
Cited
US3700627A
Cited
GB1358428A
Cited
US4079033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |