Patent US4524143A successfully refreshed from Google Patents.
US4524143A
Expired / Lapsed
US
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Catalyst for preparation of linear polyethylenepolyamines
Assignee: Texaco Inc
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Filing: 1983-01-03
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Granted: 1985-06-18
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Expires: 2003-01-03
Abstract
Abstract This invention is directed to thermally activated pelletted catalyst compositions comprising zirconium silicate having phosphorous deposited thereon and their use in the production of predominantly linear polyethylenepolyamines from ethylenediamine and monoethanolamine.
Inventors
- 👤 Steven H. Vanderpool
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:17
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
33 words
As a new composition of matter, a thermally activated pelleted composition consisting essentially of zirconium silicate having from about 0.5 wt. % to about 10 wt. % of phosphorous thermally chemically bonded thereto.
Claim 2
Dependent Claim
33 words
As a new composition of matter, a thermally activated pelleted composition consisting essentially of zirconium silicate having from about 0.5 wt. % to about 10 wt. % of phosphorous thermally chemically bonded thereto.
Claim 3
Dependent Claim
15 words
A composition as in claim 1, wherein the source of the phosphorous is phosphoric acid.
Claim 4
Independent Claim
88 words
A method of preparing a catalyst composition which comprises impregnating pellets of zirconium silicate with a liquid phosphorous compound and heating the impregnated pellets at a temperature of about 100° to about 150° C. for a period of time ranging from about 0.5 to about 5 hours sufficient to thermally chemically bond 0.5 wt. % to about 10 wt. % of phosphorous to the zirconium silicate, thereafter recovering the thus treated pellets, next water washing the thus-treated pellets to remove chemically uncombined phosphorous and then drying the pellets.
Claim 5
Independent Claim
88 words
A method of preparing a catalyst composition which comprises impregnating pellets of zirconium silicate with a liquid phosphorous compound and heating the impregnated pellets at a temperature of about 100° to about 150° C. for a period of time ranging from about 0.5 to about 5 hours sufficient to thermally chemically bond 0.5 wt. % to about 10 wt. % of phosphorous to the zirconium silicate, thereafter recovering the thus treated pellets, next water washing the thus-treated pellets to remove chemically uncombined phosphorous and then drying the pellets.
Claim 6
Dependent Claim
14 words
A method as in claim 3, wherein the source of phosphorous is phosphoric acid.
Claim 7
Dependent Claim
118 words
As a new composition of matter, a thermally activated pelleted composition consisting essentially of zirconium silicate having from about 0.5 wt. % to about 10 wt. % of phosphorous thermally chemically bonded thereto, said catalyst composition having been prepared by: impregnating pellets of zirconium silicate with a liquid phosphorous compound and heating the impregnated pellets at a temperature of about 100° to about 150° C. for a period of time ranging from about 0.5 to about 5 hours sufficient to thermally chemically bond 0.5 wt. % to about 10 wt. % of phosphorous to the zirconium silicate, thereafter recovering the thus-treated pellets, next water washing the thus-treated pellets to remove chemically uncombined phosphorous and then drying the pellets.
Claim 8
Dependent Claim
118 words
As a new composition of matter, a thermally activated pelleted composition consisting essentially of zirconium silicate having from about 0.5 wt. % to about 10 wt. % of phosphorous thermally chemically bonded thereto, said catalyst composition having been prepared by: impregnating pellets of zirconium silicate with a liquid phosphorous compound and heating the impregnated pellets at a temperature of about 100° to about 150° C. for a period of time ranging from about 0.5 to about 5 hours sufficient to thermally chemically bond 0.5 wt. % to about 10 wt. % of phosphorous to the zirconium silicate, thereafter recovering the thus-treated pellets, next water washing the thus-treated pellets to remove chemically uncombined phosphorous and then drying the pellets.
Claim 9
Dependent Claim
38 words
A composition as in claim 5, wherein the said dried pellets are also calcined at a temperature of about 200° to about 800° C. for a period of time within the range of about 2 to 24 hours.
Claim 10
Dependent Claim
15 words
A composition as in claim 6, wherein the source of the phosphorous is phosphoric acid.
Claim 11
Independent Claim
112 words
A method of preparing a catalyst composition which comprises impregnating pellets of zirconium silicate with a liquid phosphorous compound and heating the impregnated pellets at a temperature of about 100° to about 150° C. for a period of time ranging from about 0.5 to about 5 hours sufficient to thermally chemically bond 0.5 wt. % to about 10 wt. % of phosphorous to the zirconium silicate, recovering the thus-treated pellets, water washing the thus-treated pellets to remove chemically uncombined phosphorous, drying the pellets, and then calcining said dried pellets at a temperature of about 200° to about 800° C. for a period of time within the range of 2 to 24 hours.
Claim 12
Independent Claim
112 words
A method of preparing a catalyst composition which comprises impregnating pellets of zirconium silicate with a liquid phosphorous compound and heating the impregnated pellets at a temperature of about 100° to about 150° C. for a period of time ranging from about 0.5 to about 5 hours sufficient to thermally chemically bond 0.5 wt. % to about 10 wt. % of phosphorous to the zirconium silicate, recovering the thus-treated pellets, water washing the thus-treated pellets to remove chemically uncombined phosphorous, drying the pellets, and then calcining said dried pellets at a temperature of about 200° to about 800° C. for a period of time within the range of 2 to 24 hours.
Claim 13
Dependent Claim
15 words
A method as in claim 8, wherein the source of the phosphorous is phosphoric acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |