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(12) Patent: | (11) CA 1205768 |
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(21) Application Number: | 1205768 |
(54) English Title: | USE OF MORPHOLINE NEUTRALIZED PHOSPHATE AND THIOPHOSPHATE ESTERS AS ETHYLENE FURNACE ANTI-COKING ANTIFOULANTS |
(54) French Title: | UTILISATION DE PHOSPHATES ET DE THIOPHOSPHATES, ESTERS NEURALISES PAR LA MORPHOLINE, COMME AGENTS ANTI-CARBONISATION ET ANTI-ENCRASSEMENT DANS DES FOURS DE CRAQUAGE POUR ETHYLENE |
Status: | Term Expired - Post Grant |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | SMART & BIGGAR LP |
(74) Associate agent: | |
(45) Issued: | 1986-06-10 |
(22) Filed Date: | 1983-07-06 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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ABSTRACT OF THE DISCLOSURE
An improved method of reducing fouling and corrosion in ethylene
cracking furnaces using petroleum feedstocks, comprising treating the
petroleum feedstock with at least 10 ppm of a compound chosen from the group
consisting of phosphite esters, phosphate esters, thiophosphite esters,
thiophosphate esters and mixtures thereof, said esters being characterized
by the formulae:
<IMG> and
where X represents S or O, and R1, R2, and R3, are each independently selected
from the group consisting of hydrogen, morpholine, alkyl, aryl, alkaryl,
cycloaklyl, alkenyl, and aralkyl provided that at least one, and not more than
two, of each of R1, R2, and R3 are morpholine.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1205768 was not found.
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Description | Date |
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Inactive: IPC from MCD | 2006-03-11 |
Inactive: Expired (old Act Patent) latest possible expiry date | 2003-07-06 |
Grant by Issuance | 1986-06-10 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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NALCO CHEMICAL COMPANY |
Past Owners on Record |
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MORRIS KAPLAN |
WILLIAM A. LINDLEY |