US3687148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reducing friction loss in flowing hydrocarbon liquids and compositions thereof
Assignee: DALE J MEIER
•
Filing: 1971-06-25
•
Granted: 1972-08-29
•
Expires: 1991-06-25
Abstract
Abstract The disclosure describes a method of reducing friction during turbulent flow of non-aqueous liquids through conduits by addition to the fluids of from 1 to 2,000 ppm of a novel block polymer comprising chains of a block polymer having the formula A-B wherein A is a high molecular weight polymer block soluble in the hydrocarbon liquid and B is a low molecular weight polymer block substantially less soluble in the fluid.
Inventors
- 👤 Vitold Kruka
- 👤 Dale J Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:51
CPC Classifications
C; C10; C10L; C10L10/00; C10L10/08; B; B65; B65G; B65G53/00; B65G53/30; C09; C09K; C09K8/00; C09K8/60; C09K8/82; C10L1/00; C10L1/10; C10L1/14; C10L1/146; F; F17; F17D; F17D1/00; F17D1/08; F17D1/16; C10L1/16; C10L1/1625; C10L1/1633; C10L1/18; C10L1/192; C10L1/195; C10L1/22; C10L1/234; C10L1/236; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
15 words
A process according to claim 1 wherein the transfer occurs in an essentially horizontal pipe.
Claim 2
Dependent Claim
15 words
A process according to claim 1 wherein the transfer occurs in an essentially vertical pipe.
Claim 3
Dependent Claim
32 words
A process according to claim 1 wherein the fluid is a hydrocarbon and the block B predominates in polymerized monovinyl arene units and the block A predominates in polymerized conjugated diene units.
Claim 4
Dependent Claim
36 words
A process according to claim 1 wherein the fluid is a hydrocarbon and the block B comprises an alpha olefin homopolymer block and the block A comprises a copolymer block of at least two alpha olefins.
Claim 5
Dependent Claim
29 words
A process according to claim 1 wherein the fluid is a hydrocarbon and the block A is a hydrogenated polyisoprene block and block B is a hydrogenated polybutadiene block.
Claim 6
Dependent Claim
27 words
A process according to claim 1 wherein the fluid is a hydrocarbon and the block B is a polystyrene block and block A is a polybutadiene block.
Claim 7
Dependent Claim
18 words
A process according to claim 1 wherein the block B is substantially insoluble in the non-aqueous liquid medium.
Claim 8
Dependent Claim
21 words
A process according to claim 1 wherein block B is a polymaleic acid block and block A is a polybutadiene block.
Claim 9
Dependent Claim
20 words
A process according to claim 1 wherein block B is a vinylpyridine block and block A is a polybutadiene block.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |