Patent US4017378A successfully refreshed from Google Patents.
US4017378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binders for electrodes
Assignee: BP PLC
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Filing: 1974-11-11
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Granted: 1977-04-12
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Expires: 1994-11-11
Abstract
Abstract A binder suitable for use in electrodes is prepared by distilling a residue boiling above 200 DEG C from steam cracking to give a material with a KS softening point of 55 DEG - 90 DEG C and thermally ageing the material to increase the KS softening point to 80 DEG - 100 DEG C.
Inventors
- 👤 Christian Pierre Maurice Fauveau
- 👤 Albert Julus Lucien Bonzom
- 👤 Anne Marie Eugenie Moutard nee Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:00
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/02; C25C7/025; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; C10; C10C; C10C3/00; C10C3/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
A process for the manufacture of binders suitable for use in electrodes, consisting of distilling at atmospheric pressure at a residue temperature of from 150° to 450° C. a residue boiling predominantly above 200° C. obtained from a high temperature cracking of a naphtha petroleum fraction, to give a pitch having a KS softening point of from 55° to 90° C. and thermally ageing the pitch at a temperature of from 350° to 450° C. and at atmospheric pressure for from 1 to 20 hours to increase the KS softening point to between 80° and 100 C., said ageing being carried out by recycling the pitch at the base of the distillation column.
Claim 2
Dependent Claim
113 words
A process for the manufacture of binders suitable for use in electrodes, consisting of distilling at atmospheric pressure at a residue temperature of from 150° to 450° C. a residue boiling predominantly above 200° C. obtained from a high temperature cracking of a naphtha petroleum fraction, to give a pitch having a KS softening point of from 55° to 90° C. and thermally ageing the pitch at a temperature of from 350° to 450° C. and at atmospheric pressure for from 1 to 20 hours to increase the KS softening point to between 80° and 100 C., said ageing being carried out by recycling the pitch at the base of the distillation column.
Claim 3
Dependent Claim
19 words
A process as claimed in claim 1 characterised in that the residue temperature is from 200° to 420° C.
Claim 4
Dependent Claim
22 words
A process as claimed in claim 1 characterised in that the KS softening point after distillation is from 60 to 80° C.
Claim 5
Dependent Claim
22 words
A process as claimed in claim 1 characterised in that the yield of pitch after distillation is from 38 to 71% wt.
Claim 6
Dependent Claim
19 words
A process as claimed in claim 1 characterised in that the ageing is carried out by heating under reflux.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |