US4487878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition of a solution fluorocarbon polymer, a dispersed fluorocarbon polymer and a polyamine curing agent
Assignee: EIDP Inc
•
Filing: 1984-03-21
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Granted: 1984-12-11
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Expires: 2004-03-21
Abstract
Abstract A coating composition of a fluorocarbon polymer which cures at ambient temperatures in which a fluorocarbon polymer in solution is of vinylidene fluoride and hexafluoropropylene and has a weight average molecular weight of about 5,000-600,000; the composition also contains a dispersed fluorocarbon polymer of the following group polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perflouroalkoxyvinyl ether; a metallic oxide such as magnesium oxide which is an acid acceptor; and an aliphatic or cycloaliphatic polyamine curing agent; preferably, the composition contains a reinforcing pigment such as titanium dioxide. The coating composition is used to provide corrosion and abrasion resistant coatings for large structures in chemical plants, oil refineries, oil drilling platforms, and as a coating for the interior of smoke stacks of large utility companies.
Inventors
- 👤 Joseph A. Vasta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:44
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L79/00; C08L79/02; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/29; Y10T428/2911; Y10T428/31504; Y10T428/31511; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
139 words
A coating composition comprising about 10-70% by weight binder and 30-90% by weight of a non-aqueous organic liquid; wherein the binder comprises: a fluorocarbon polymer in solution comprising vinylidene fluoride and hexafluoropropylene having a weight average molecular weight of about 5,000-600,000; dispersed fluorocarbon polymer particles having a particle size of about 1-150 microns and being selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perfluoroalkoxyvinylether; a metallic oxide which is an acid acceptor; and a curing agent of the formula ##STR8## where R is R 1 NH 2 and R 1 is aliphatic or cycloaliphatic hydrocarbon radical, R 2 is C or a hydrocarbon group, R 3 is H or CH 3 , X is 3 when R 2 is a hydrocarbon group and X is 4 when R 2 is C.
Claim 2
Dependent Claim
139 words
A coating composition comprising about 10-70% by weight binder and 30-90% by weight of a non-aqueous organic liquid; wherein the binder comprises: a fluorocarbon polymer in solution comprising vinylidene fluoride and hexafluoropropylene having a weight average molecular weight of about 5,000-600,000; dispersed fluorocarbon polymer particles having a particle size of about 1-150 microns and being selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perfluoroalkoxyvinylether; a metallic oxide which is an acid acceptor; and a curing agent of the formula ##STR8## where R is R 1 NH 2 and R 1 is aliphatic or cycloaliphatic hydrocarbon radical, R 2 is C or a hydrocarbon group, R 3 is H or CH 3 , X is 3 when R 2 is a hydrocarbon group and X is 4 when R 2 is C.
Claim 3
Dependent Claim
19 words
The composition of claim 1 in which the fluorocarbon polymer has a weight average molecular weight of about 50,000-300,000.
Claim 4
Dependent Claim
19 words
The composition of claim 1 in which the fluorocarbon polymer has a weight average molecular weight of about 75,000-250,000.
Claim 5
Dependent Claim
19 words
The composition of claim 1 in which the fluorocarbon polymer has a weight average molecular weight of about 300,000-400,000.
Claim 6
Dependent Claim
26 words
The composition of claim 1 in which the fluorocarbon polymer consists essentially of about 50-70% by weight of vinylidene fluoride and 30-50% by weight of hexafluoropropylene.
Claim 7
Dependent Claim
13 words
The composition of claim 5 in which the metallic oxide is magnesium oxide.
Claim 8
Dependent Claim
15 words
The coating composition of claim 6 in which R 1 is a cycloaliphatic hydrocarbon radical.
Claim 9
Dependent Claim
13 words
The coating composition of claim 7 in which the dispersed polymer is polytetrafluoroethylene.
Claim 10
Dependent Claim
16 words
The coating composition of claim 7 in which the dispersed polymer is a fluorinated ethylene/propylene polymer.
Claim 11
Dependent Claim
14 words
The coating composition of claim 7 in which the dispersed polymer is polyvinyl fluoride.
Claim 12
Dependent Claim
14 words
The coating composition of claim 7 in which the dispersed polymer is polyvinylidene fluoride.
Claim 13
Dependent Claim
19 words
The coating composition of claim 7 in which the dispersed polymer is a copolymer of tetrafluoroethylene and perfluoroalkoxyvinyl ether.
Claim 14
Dependent Claim
13 words
The coating Composition of claim 7 containing a filler pigment of titanium dioxide.
Claim 15
Dependent Claim
21 words
The composition of claim 7 containing about 0.1-3% by weight, based on the weight of the binder, of a bicyclic amidine.
Claim 16
Dependent Claim
22 words
The composition of claim 14 containing in addition about 1-20% by weight, based on the weight of the binder, of perfluoroalkylpropylene oxide.
Claim 17
Dependent Claim
26 words
The composition of claim 14 in which the perfluoroalkyl propylene oxide has the formula ##STR9## where R 4 is a perfluoroalkyl group having 4-12 carbon atoms.
Claim 18
Dependent Claim
40 words
The composition of claim 14 containing in addition about 1-20% by weight, based on the weight of the binder, of a glycidyl ester of the formula ##STR10## where R 5 is a tertiary aliphatic hydrocarbon group having 8-10 carbon atoms.
Claim 19
Dependent Claim
28 words
The composition of claim 14 where R 2 of the curing agent is C or C 3 H 5 , R 3 is H and R is ##STR11##
Claim 20
Dependent Claim
193 words
The coating composition of claim 1 in which the binder comprises: (a) 50-84.5% by weight of a fluorocarbon polymer in solution consisting essentially of polymerized units of 50-70% by weight, based on the weight of the polymer, of vinylidene fluoride and 30-50% by weight, based on the weight of the polymer, of hexafluoropropylene and has a weight average molecular weight of about 75,000-450,000; (b) 5-20% by weight of a low molecular weight fluorocarbon polymer in solution consisting essentially of polymerized units of 50-70% by weight, based on the weight of the polymer, of vinylidene fluoride and 30-50% by weight, based on the weight of the polymer, of hexafluoropropylene and has a weight average molecular weight of about 5,000-15,000; (c) 5-20% by weight of a dispersed fluorocarbon polymer selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinylfluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perfluoroalkoxyvinyl ether (d) 5-20% by weight, based on the weight of the binder, of magnesium oxide; and (e) 0.5-20% by weight, based on the weight of the binder, of a curing agent wherein R 2 is C or C 3 H 5 , R 3 is H and R is ##STR12##
Claim 21
Dependent Claim
20 words
The coating composition of claim 19 containing titanium dioxide pigment in a pigment to binder weight ratio of about 20:100-200:100.
Claim 22
Dependent Claim
20 words
The coating composition of claim 20 containing about 0.1-3% by weight, based on the weight of the binder of 1,8-diaza-bicyclo(5,4,0)undecene-7.
Claim 23
Dependent Claim
25 words
The composition of claim 19 in which the perfluoroalkylpropylene oxide has the formula ##STR13## where R 4 is a perfluoroalkyl group having 4-12 carbon atoms.
Claim 24
Dependent Claim
40 words
The composition of claim 19 containing in addition about 5-15% by weight, based on the weight of the binder, of a glycidyl ester of the formula ##STR14## where R 5 is a tertiary aliphatic hydrocarbon group having 8-10 carbon atoms.
Claim 25
Dependent Claim
120 words
A coating composition comprising about 10-70% by weight binder and 30-90% by weight of a nonaqueous organic liquid; wherein the binder comprises: a fluorocarbon polymer in solution comprising vinylidene fluoride and hexafluoropropylene having a weight average molecular weight of about 5,000-600,000 dispersed fluorocarbon polymer particles having a particle size of about 1-150 microns and being selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perfluoroalkoxyvinyl ether; a curing agent of the formula ##STR15## where R is a cycloaliphatic hydrocarbon radical, R 3 is H or CH 3 , X is 3 when R 2 is a hydrocarbon group and X is 4 when R 2 is C; perfluoropropylene oxide; and a bicyclic amidine.
Claim 26
Dependent Claim
120 words
A coating composition comprising about 10-70% by weight binder and 30-90% by weight of a nonaqueous organic liquid; wherein the binder comprises: a fluorocarbon polymer in solution comprising vinylidene fluoride and hexafluoropropylene having a weight average molecular weight of about 5,000-600,000 dispersed fluorocarbon polymer particles having a particle size of about 1-150 microns and being selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perfluoroalkoxyvinyl ether; a curing agent of the formula ##STR15## where R is a cycloaliphatic hydrocarbon radical, R 3 is H or CH 3 , X is 3 when R 2 is a hydrocarbon group and X is 4 when R 2 is C; perfluoropropylene oxide; and a bicyclic amidine.
Claim 27
Dependent Claim
12 words
The composition of claim 24 in which the bicyclic amidine is 1,8-diaza-bicyclo(5,4,0)-undecene-7.
Claim 28
Dependent Claim
36 words
The composition of claim 24 containing in addition 1-20% by weight, based on the weight of the binder, of a glycidyl ester of the formula ##STR16## is a tertiary aliphatic hydrocarbon group having 8-10 carbon atoms.
Claim 29
Dependent Claim
26 words
The composition of claim 24 in which the perfluoroalkyl propylene oxide has the formula ##STR17## where R 4 is a perfluoroalkyl group having 4-12 carbon atoms.
Claim 30
Dependent Claim
160 words
A two-component composition, wherein the two components are mixed together to form a composition comprising about 10-70% by weight binder and 30-90% by weight organic solvent and wherein the components comprise component (1) a solution of a fluorocarbon polymer consisting essentially of vinylidene fluoride and hexafluoropropylene having a weight average molecular weight of about 5,000-600,000, a dispersed fluoro- dispersed fluorocarbon polymer particles having a particle size of about 1-150 microns and being selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perfluoroalkoxyvinyl ether and a metallic oxide which is an acid acceptor; and component (2) a curing agent of the formula ##STR18## where R is R 1 NH 2 and R 1 is aliphatic or cycloaliphatic hydrocarbon radical, R 2 is C or a hydrocarbon group, R 3 is H or CH 3 , X is 3 when R 2 is a hydrocarbon group and X is 4 when R 2 is C.
Claim 31
Dependent Claim
160 words
A two-component composition, wherein the two components are mixed together to form a composition comprising about 10-70% by weight binder and 30-90% by weight organic solvent and wherein the components comprise component (1) a solution of a fluorocarbon polymer consisting essentially of vinylidene fluoride and hexafluoropropylene having a weight average molecular weight of about 5,000-600,000, a dispersed fluoro- dispersed fluorocarbon polymer particles having a particle size of about 1-150 microns and being selected from the group consisting of polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perfluoroalkoxyvinyl ether and a metallic oxide which is an acid acceptor; and component (2) a curing agent of the formula ##STR18## where R is R 1 NH 2 and R 1 is aliphatic or cycloaliphatic hydrocarbon radical, R 2 is C or a hydrocarbon group, R 3 is H or CH 3 , X is 3 when R 2 is a hydrocarbon group and X is 4 when R 2 is C.
Claim 32
Dependent Claim
12 words
A substrate coated with a layer of the composition of claim 1.
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |