Patent US4801346A successfully refreshed from Google Patents.
US4801346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coatings
Assignee: Kendall Co
•
Filing: 1986-07-30
•
Granted: 1989-01-31
•
Expires: 2006-07-30
Abstract
Abstract Novel storage coating for metal objects such as pipes comprising: a di- and/or triblock copolymer thermoplastic rubber consisting of polystyrene blocks and rubbery polymer blocks; a saturated hydrocarbon tackifying resin; and a hydrocarbon solvent. Preferably, the coating also contains an ultraviolet light absorber.
Inventors
- 👤 Elwyn Huddleston
- 👤 Jerry M. Serra
- 👤 Gary R. Robe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:39
CPC Classifications
C; C09; C09D; C09D153/00; Y; Y10; Y10S; Y10S138/00; Y10S138/06; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1355; Y10T428/1359
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
62 words
A method for protecting a metal article from corrosion comprising coating said article with a liquid coating composition comprising: (1) a triblock thermoplastic rubber comprising a copolymer having polystyrene end blocks and a poly(ethylene-butylene) rubber midblock; (2) at least one tackifying resin selected from the group consisting of phenolic-modified terpene resins and coumarone-indene resins; and (3) a hydrocarbon solvent for said copolymer.
Claim 2
Independent Claim
62 words
A method for protecting a metal article from corrosion comprising coating said article with a liquid coating composition comprising: (1) a triblock thermoplastic rubber comprising a copolymer having polystyrene end blocks and a poly(ethylene-butylene) rubber midblock; (2) at least one tackifying resin selected from the group consisting of phenolic-modified terpene resins and coumarone-indene resins; and (3) a hydrocarbon solvent for said copolymer.
Claim 3
Dependent Claim
15 words
A method as defined in claim 1 wherein said composition includes an ultraviolet light absorber.
Claim 4
Dependent Claim
15 words
A method as defined in claim 2 wherein said ultraviolet light absorber is carbon black.
Claim 5
Dependent Claim
29 words
A method as defined in claim 1 wherein said composition contains from about 35 to about 53 percent of said copolymer, by total weight of solids in said composition.
Claim 6
Dependent Claim
28 words
A method as defined in claim 4 wherein said composition contains from about 35 to about 53 percent tackifying resin by total weight of solids in said composition.
Claim 7
Dependent Claim
15 words
A method as defined in claim 1 wherein said solvent comprises a mixture of solvents.
Claim 8
Dependent Claim
14 words
A method as defined in claim 6 wherein said solvent mixture includes an isoparaffin.
Claim 9
Dependent Claim
22 words
A method as defined in claim 1 wherein said copolymer has a styrene: ethylene-butylene ratio of from about 14:86 to about 33:67.
Claim 10
Dependent Claim
51 words
A method as defined in claim 1 including the steps of removing said coating composition at some time after it is coated onto said metal article; and thereafter applying to said metal article and any of said coating composition remaining thereon a rubber-based adhesive coating containing natural rubber and a tackifier.
Claim 11
Dependent Claim
14 words
A method as defined in claim 9 wherein said metal article is a pipe.
Claim 12
Dependent Claim
21 words
A method as defined in claim 10 including the step of applying a protective adhesive tape over said rubber-based adhesive coating.
Claim 13
Independent Claim
179 words
A method for protecting metal pipes which are intended to be stored for a period of time prior to being laid, said pipes being subjected to degradative environmental forces both during said period of storage and after it is laid, said method comprising the steps of: (1) applying to the surface of said pipe prior to said storage period a liquid storage coating composition comprising (a) a triblock thermoplastic rubber comprising a copolymer having polystyrene end blocks and a poly(ethylene-butylene)rubber midlock; (b) at least one tackifying resin selected from the group consisting of phenolic-modified terpene resins and coumarone-idene resins; and (c) a hydrocarbon solvent for said copolymer; (2) after said storage period and prior to laying said pipe, removing said storage coating; (3) applying a rubber-based primer coating of natural rubber and a tackifier on the surface of said pipe and any remaining storage coating; (4) and thereafter applying an adhesive pipewrap of a polyolefin material carrying on one surface thereof an adhesive composition of a blend of synthetic rubbers and at least one tackifier, over said primer coating.
Claim 14
Independent Claim
179 words
A method for protecting metal pipes which are intended to be stored for a period of time prior to being laid, said pipes being subjected to degradative environmental forces both during said period of storage and after it is laid, said method comprising the steps of: (1) applying to the surface of said pipe prior to said storage period a liquid storage coating composition comprising (a) a triblock thermoplastic rubber comprising a copolymer having polystyrene end blocks and a poly(ethylene-butylene)rubber midlock; (b) at least one tackifying resin selected from the group consisting of phenolic-modified terpene resins and coumarone-idene resins; and (c) a hydrocarbon solvent for said copolymer; (2) after said storage period and prior to laying said pipe, removing said storage coating; (3) applying a rubber-based primer coating of natural rubber and a tackifier on the surface of said pipe and any remaining storage coating; (4) and thereafter applying an adhesive pipewrap of a polyolefin material carrying on one surface thereof an adhesive composition of a blend of synthetic rubbers and at least one tackifier, over said primer coating.
References Cited (Backward Citations)
US3932327A
Cited
US3987002A
Cited
US3991002A
Cited
US4618213A
Cited
US4535526A
Cited
US4213486A
Cited
US4399249A
Cited
JPS57109644A
Cited
US4587289A
Cited
US4606953A
Cited
US4514445A
Cited
US4640730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |