US4145326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-inhibiting poly(arylene sulfide) coating compositions
Assignee: Phillips Petroleum Co
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Filing: 1977-09-12
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Granted: 1979-03-20
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Expires: 1997-09-12
Abstract
Abstract A corrosion-inhibiting poly(arylene sulfide) coating composition is described which comprises a mixture of a normally solid poly(arylene sulfide) resin, a corrosion-inhibiting agent selected from alkali metal nitrites, benzoates, phthalates; ammonium chromates, benzoates, phthalates; mixtures of alkali metal chromates and alkali metal borates; morpholine; or combinations thereof, dispersed in a liquid suspending agent. An illustrative coating composition contains 25 weight percent poly(phenylene sulfide) resin, 8 weight percent titanium dioxide, 33 weight percent water, 33 weight percent propylene glycol and 1 weight percent sodium nitrite. The coating compositions are useful in inhibiting the occurrence of corrosion during coating and curing of the coating compositions to iron and iron-containing alloys in the formation of cured poly(arylene sulfide) resin coated iron or iron-containing alloy laminates.
Inventors
- 👤 Jennings P. Blackwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:54
CPC Classifications
C; C09; C09D; C09D181/00; C09D181/02; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/28; C08K3/38; C08K5/00; C08K5/04; C08K5/05; C08K5/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31533; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A poly(arylene sulfide) coating composition which comprises the mixture of: (a) normally solid material comprising a normally solid poly(arylene sulfide) resin and at least one normally solid fluorocarbon polymer wherein the weight ratio of said normally solid poly(arylene sulfide) resin to said normally solid fluorocarbon polymer is within the range of about 100:5 to about 100:50, (b) about 0.5 to about 30 parts by weight of sodium nitrite per hundred parts by weight of said poly(arylene sulfide) resin, and (c) an inert liquid suspending agent.
Claim 2
Dependent Claim
85 words
A poly(arylene sulfide) coating composition which comprises the mixture of: (a) normally solid material comprising a normally solid poly(arylene sulfide) resin and at least one normally solid fluorocarbon polymer wherein the weight ratio of said normally solid poly(arylene sulfide) resin to said normally solid fluorocarbon polymer is within the range of about 100:5 to about 100:50, (b) about 0.5 to about 30 parts by weight of sodium nitrite per hundred parts by weight of said poly(arylene sulfide) resin, and (c) an inert liquid suspending agent.
Claim 3
Dependent Claim
83 words
A poly(arylene sulfide) coating composition which comprises the mixture of: (a) normally solid material comprising a normally solid poly(arylene sulfide) resin and at least one normally solid polytetrafluoroethylene wherein the weight ratio of said normally solid poly(arylene sulfide) resin to said normally solid polytetrafluoroethylene is within the range of about 100:5 to about 100:50, (b) about 0.5 to about 30 parts by weight of sodium nitrite per hundred parts by weight of said poly(arylene sulfide) resin, and (c) an inert liquid suspending agent.
Claim 4
Dependent Claim
83 words
A poly(arylene sulfide) coating composition which comprises the mixture of: (a) normally solid material comprising a normally solid poly(arylene sulfide) resin and at least one normally solid polytetrafluoroethylene wherein the weight ratio of said normally solid poly(arylene sulfide) resin to said normally solid polytetrafluoroethylene is within the range of about 100:5 to about 100:50, (b) about 0.5 to about 30 parts by weight of sodium nitrite per hundred parts by weight of said poly(arylene sulfide) resin, and (c) an inert liquid suspending agent.
Claim 5
Dependent Claim
47 words
A composition according to claim 2 containing about 1.5 to about 15 parts by weight of sodium nitrite per hundred parts by weight of said polyphenylene sulfide and about 5 to about 15 parts by weight of polytetrafluoroethylene per hundred parts by weight of said polyphenylene sulfide.
Claim 6
Dependent Claim
30 words
A composition according to claim 3 containing about 60 to about 900 parts by weight of said inert liquid suspending agent per hundred parts by weight of said polyphenylene sulfide.
Claim 7
Dependent Claim
27 words
A composition according to claim 4 containing about 25 to about 35 parts by weight of titanium dioxide per hundred parts by weight of said polyphenylene sulfide.
Claim 8
Dependent Claim
14 words
A composition according to claim 5 wherein said inert liquid suspending agent comprises water.
Claim 9
Dependent Claim
27 words
A composition according to claim 6 wherein said inert liquid suspending agent comprises a mixture of water and at least one of ethylene glycol or propylene glycol.
Claim 10
Dependent Claim
73 words
A composition according to claim 1 containing about 1.5 to about 30 parts by weight of sodium nitrite per hundred parts by weight of said poly(arylene sulfide) resin, about 5 to about 15 parts by weight of fluorocarbon polymer per hundred parts by weight of said poly(arylene sulfide) resin, and about 60 to about 900 parts by weight of said inert liquid suspending agent per hundred parts by weight of poly(arylene sulfide) resin.
Claim 11
Dependent Claim
27 words
A composition according to claim 8 containing about 25 to about 35 parts by weight of titanium dioxide per hundred parts by weight of poly(arylene sulfide) resin.
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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) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |