Patent US4158371A successfully refreshed from Google Patents.
US4158371A
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Asphalt and rubber comprising composition
Assignee: Phillips Petroleum Co
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Filing: 1977-12-23
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Granted: 1979-06-19
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Expires: 1997-12-23
Abstract
Abstract A pipe coating composition is provided having good crack resistance properties that consists essentially of about 50 to 70 wt. % mineral aggregate, about 15 to 35 wt. % finely divided mineral filler, about 5 to 20 wt. % asphalt, about 0.05 to 7 wt. % of a rubbery radial teleblock copolymer, about 0 to 7 wt. % of an oil, and about 0 to 0.5 wt. % of a fibrous material. Further more, the crack resistance of a pipe coating composition is dramatically improved by using an asphalt rubber composition in which the rubber is an epoxy-coupled radial teleblock copolymer as compared to a silicon tetrahalide-coupled radial teleblock copolymer of essentially the same structure.
Inventors
- 👤 Robert E. Reusser
- 👤 Lew T. Gray
- 👤 Oren L. Marrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:22
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; C; C08; C08K; C08K3/00; C08K3/01; C08K3/013; C08L; C08L53/00; C08L95/00; C09; C09D; C09D195/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1372
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
84 words
A pipe consisting essentially of a base pipe and a coating, said coating in turn consisting essentially of a. about 50 to 70 wt. % of a mineral aggregate, b. about 15 to 35 wt. % of a finely divided mineral filler, c. about 5 to 20 wt. % of asphalt, d. about 0.05 to 7 wt. % of a rubbery radial teleblock copolymer, e. about 0 to 7 wt. % of oil, f. about 0 to 0.5 wt. % of a fibrous material.
Claim 2
Dependent Claim
84 words
A pipe consisting essentially of a base pipe and a coating, said coating in turn consisting essentially of a. about 50 to 70 wt. % of a mineral aggregate, b. about 15 to 35 wt. % of a finely divided mineral filler, c. about 5 to 20 wt. % of asphalt, d. about 0.05 to 7 wt. % of a rubbery radial teleblock copolymer, e. about 0 to 7 wt. % of oil, f. about 0 to 0.5 wt. % of a fibrous material.
Claim 3
Dependent Claim
20 words
A pipe in accordance with claim 1 wherein said coating comprises 0.05 to 0.5 wt. % of a fibrous material.
Claim 4
Dependent Claim
15 words
A pipe in accordance with claim 2 wherein said fibrous material is glass fiber material.
Claim 5
Dependent Claim
77 words
A pipe in accordance with claim 1 said coating comprising a. about 55 to 65 wt. % of a mineral aggregate, b. about 20 to 30 wt. % of a finely divided mineral filler, c. about 8 to 15 wt. % of asphalt, d. about 0.2 to 5 wt. % of a rubbery radial teleblock copolymer, e. about 0 to 5 wt. % of an oil, f. about 0.1 to 0.5 wt. % of a fibrous material.
Claim 6
Dependent Claim
26 words
A pipe in accordance with claim 1 wherein the ratio of the alkadiene-based rubbery polymer to the oil is in the range of 2/1 to 0.3/1.
Claim 7
Dependent Claim
43 words
A pipe in accordance with claim 1 wherein the total weight of the rubbery radial teleblock copolymer and oil is about 1 to 30 wt. % of the total weight of the rubbery radial teleblock copolymer, the oil and the asphalt taken together.
Claim 8
Dependent Claim
40 words
A pipe in accordance with claim 1 wherein said rubbery radial teleblock copolymer is a polymer of one or more alkadienes having 4 to 8 carbon atoms and one or more vinyl-substituted aromatic monomers having 8 to 12 carbon atoms.
Claim 9
Dependent Claim
62 words
A pipe in accordance with claim 7 wherein said rubbery radial teleblock copolymer has the general formula (A--B) x Y wherein A constitutes a non-rubbery block, B constitutes an alkadiene-based rubbery block, x is an integer of at least 3 and Y is a part of the molecule that is derived from either a multifunctional initiator or from a multifunctional coupling agent.
Claim 10
Dependent Claim
46 words
A pipe in accordance with claim 8 wherein A is a polystyrene block, B is a rubbery polymer segment selected from the group consisting of polyalkadiene and copolymers of alkadienes and monovinyl-substituted arenes, and wherein Y is a molecular configuration derived from a multifunctional coupling agent.
Claim 11
Dependent Claim
26 words
A pipe in accordance with claim 9 wherein Y is a portion of the molecule derived from a coupling agent containing at least 3 epoxy groups.
Claim 12
Dependent Claim
102 words
A process for coating a pipe comprising a. mixing the following ingredients to form a fluid composition; about 50 to 70 wt. % of a mineral aggregate, about 15 to 35 wt. % of a finely divided mineral filler, about 5 to 20 wt. % of asphalt, about 0.05 to 7 wt. % of a rubbery radial teleblock copolymer, about 0 to 7 wt. % of oil, about 0 to 0.5 wt. % of a fibrous material, b. applying such fluid composition to the external surface of a pipe, c. letting the composition harden on said pipe to form a solid coating.
Claim 13
Dependent Claim
102 words
A process for coating a pipe comprising a. mixing the following ingredients to form a fluid composition; about 50 to 70 wt. % of a mineral aggregate, about 15 to 35 wt. % of a finely divided mineral filler, about 5 to 20 wt. % of asphalt, about 0.05 to 7 wt. % of a rubbery radial teleblock copolymer, about 0 to 7 wt. % of oil, about 0 to 0.5 wt. % of a fibrous material, b. applying such fluid composition to the external surface of a pipe, c. letting the composition harden on said pipe to form a solid coating.
Claim 14
Dependent Claim
25 words
A process in accordance with claim 11 wherein the ingredients to form said fluid composition comprise 0.05 to 0.5 wt. % of a fibrous material.
Claim 15
Dependent Claim
15 words
A process in accordance with claim 12 wherein said fibrous material is glass fiber material.
Claim 16
Dependent Claim
78 words
A process in accordance with claim 11 wherein said ingredients comprise a. about 55 to 65 wt. % of a mineral aggregate, b. about 20 to 30 wt. % of a finely divided mineral filler, c. about 8 to 15 wt. % of asphalt, d. about 0.2 to 5 wt. % of a rubbery radial teleblock copolymer, e. about 0 to 5 wt. % of an oil, f. about 0.1 to 0.5 wt % of a fibrous material.
Claim 17
Dependent Claim
27 words
A process in accordance with claim 11 wherein the weight ratio of the alkadiene-based rubbery polymer to the oil is in the range of 2/1 to 0.3/1.
Claim 18
Dependent Claim
41 words
A process in accordance with claim 11 wherein the total weight of the rubbery alkadiene-based polymer and oil is about 1 to 30 wt. % of the total weight of the rubbery teleblock copolymer, the oil and the asphalt taken together.
Claim 19
Dependent Claim
39 words
A process in accordance with claim 11 wherein said rubbery teleblock copolymer is a polymer of one or more alkadienes having 4 to 8 carbon atoms and one or more vinyl-substituted aromatic monomers having 8 to 12 carbon atoms.
Claim 20
Dependent Claim
62 words
A process in accordance with claim 17 wherein said rubbery radial teleblock copolymer has the general formula (A--B) x Y wherein A constitutes a non-rubbery block, B constitutes an alkadiene-based rubbery block, x is an integer of at least 3 and Y is a part of the molecule that is derived from either a multifunctional initiator or from a multifunctional coupling agent.
Claim 21
Dependent Claim
46 words
A process in accordance with claim 17 wherein A is a polystyrene block, B is a rubbery polymer segment selected from the group consisting of polyalkadiene and copolymers of alkadienes and monovinyl-substituted arenes, and wherein Y is a molecular configuration derived from a multi-functional coupling agent.
Claim 22
Dependent Claim
58 words
A process in accordance with claim 11 comprising a. premixing said rubbery teleblock copolymer, said oil and said asphalt to form a fluid mixture, b. premixing said mineral aggregate, said finely divided mineral filler and said fibrous material to form a dry mixture, c. blending said fluid mixture and said dry mixture to obtain said fluid coating composition.
Claim 23
Dependent Claim
25 words
A process in accordance with claim 20 wherein said coating composition is applied to said pipe in a thickness of about 0.5 to 40 mm.
Claim 24
Dependent Claim
39 words
A process in accordance with claim 20 wherein said premix of (a) comprises 70-99 parts by weight of asphalt, 0-10 parts by weight of an oil, and 1 to 20 parts by weight of a rubbery radial teleblock copolymer.
References Cited (Backward Citations)
US4028292A
Cited
US4073760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |