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US2547013A
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Reduction of phosphoric acid corrosion in a polymerization process
Assignee: California Research LLC
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Filing: 1949-06-04
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Granted: 1951-04-03
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Expires: 1969-06-04
Abstract
No abstract record available.
Inventors
- 👤 Jacob D Kemp
- 👤 Lloyd F Brooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:32
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/02; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; B01J2219/00; B01J2219/02; B01J2219/0204; B01J2219/0236; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN A POLYMERIZATION PROCESS WHEREIN NORMALLY GASEOUS OLEFINS ARE CONTACTED WITH CONCENTRATED LIQUID PHOSPHORIC ACID IN A POLYMERIZATION ZONE PRESENTING ACID-RESISTANT METALLIC SURFACES TO THE REACTION MIXTURE AND WHEREIN PHOSPHORIC ACID ESTERS OF SAID OLEFINS ARE FORMED DURING THE PROCESS, THE METHOD OF DECREASING CORROSION OF SAID METALLIC SURFACES WHICH COMPRISES MAINTAINING THE CONCENTRATION OF SAID ESTERS IN THE REACTION MIXTURE BELOW ABOUT 0.08 MOL OF ESTER PER MOL OF FREE PHOSPHORIC ACID.
Claim 2
Dependent Claim
73 words
IN A POLYMERIZATION PROCESS WHEREIN NORMALLY GASEOUS OLEFINS ARE CONTACTED WITH CONCENTRATED LIQUID PHOSPHORIC ACID IN A POLYMERIZATION ZONE PRESENTING ACID-RESISTANT METALLIC SURFACES TO THE REACTION MIXTURE AND WHEREIN PHOSPHORIC ACID ESTERS OF SAID OLEFINS ARE FORMED DURING THE PROCESS, THE METHOD OF DECREASING CORROSION OF SAID METALLIC SURFACES WHICH COMPRISES MAINTAINING THE CONCENTRATION OF SAID ESTERS IN THE REACTION MIXTURE BELOW ABOUT 0.08 MOL OF ESTER PER MOL OF FREE PHOSPHORIC ACID.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |