US4960761A
Expired / Lapsed
US
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High surface area polymers of pyrrole or copolymers of pyrrole
Assignee: Lubrizol Corp
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Filing: 1988-11-28
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Granted: 1990-10-02
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Expires: 2008-11-28
Abstract
Abstract Polymers of pyrrole or copolymers of pyrrole are obtained having high surface area and low conductivity. Such polymers and copolymers are useful in forming catalysts.
Inventors
- 👤 Richard Yodice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:49
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/124; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/16; B01J31/165; B01J31/1658; B01J31/18; B01J31/1805; B01J31/181; B01J2231/00; B01J2231/40; B01J2231/42; B01J2231/4205; B01J2231/60; B01J2531/00; B01J2531/10; B01J2531/16; B01J2531/80; B01J2531/84; B01J2531/842; B01J2531/847
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A process for preparing a pulverant catalytic composition comprising a polymer of pyrrole or a copolymer of pyrrole and mixtures thereof obtained by treating a pyrrole or a copolymerizable mixture of a pyrrole comprising the steps of: (a) obtaining a pyrrole or a copolymerizable mixture containing a pyrrole; (b) introducing to the pyrrole or copolymerizable mixture containing a pyrrole a peroxide; (c) reacting the mixture of the pyrrole or copolymerizable mixture containing a pyrrole and the peroxide for a sufficient amount of time to polymerize the pyrrole or the copolymerizable mixture containing a pyrrole, (d) treating the polymer of pyrrole or copolymer of pyrrole in the presence of a strong base to substantially increase the surface area of the polymer of pyrrole or copolymer of pyrrole, and (e) introducing to the high surface area polymer of pyrrole or copolymer of pyrrole material, thereby forming the catalytic composition.
Claim 2
Dependent Claim
147 words
A process for preparing a pulverant catalytic composition comprising a polymer of pyrrole or a copolymer of pyrrole and mixtures thereof obtained by treating a pyrrole or a copolymerizable mixture of a pyrrole comprising the steps of: (a) obtaining a pyrrole or a copolymerizable mixture containing a pyrrole; (b) introducing to the pyrrole or copolymerizable mixture containing a pyrrole a peroxide; (c) reacting the mixture of the pyrrole or copolymerizable mixture containing a pyrrole and the peroxide for a sufficient amount of time to polymerize the pyrrole or the copolymerizable mixture containing a pyrrole, (d) treating the polymer of pyrrole or copolymer of pyrrole in the presence of a strong base to substantially increase the surface area of the polymer of pyrrole or copolymer of pyrrole, and (e) introducing to the high surface area polymer of pyrrole or copolymer of pyrrole material, thereby forming the catalytic composition.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein the catalytic active material is a Friedel Crafts catalyst.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the catalytic active material is an oxygen reduction catalyst.
Claim 5
Dependent Claim
14 words
The process of claim 3 wherein the catalytic active material is a transition metal.
Claim 6
Dependent Claim
35 words
The process of claim 1 wherein the surface area of the polymer of pyrrole or copolymer of pyrrole prior to contact with the catalytic active material is at least about 25 square meters per gram.
Claim 7
Dependent Claim
31 words
The process of claim 1 wherein the catalytic active material is selected from the group consisting of ferric, ferrous, cupric, cuprous, manganic, nickel, osmium, ruthenium and aluminum ions and mixtures thereof.
Claim 8
Dependent Claim
24 words
The process of claim 1 wherein the catalytic active material is selected from the group consisting of bromium, iodine, boron triflouride and sulfur trioxide.
Claim 9
Dependent Claim
16 words
The process of claim 1 wherein the polymer of pyrrole or copolymer of pyrrole is reprotonated.
Claim 10
Dependent Claim
14 words
The process of claim 8 wherein the composition is reprotonated with a non-oxidative acid.
Claim 11
Dependent Claim
33 words
The process of claim 9 wherein the polymer of pyrrole or copolymer of pyrrole is reprotonated with a mineral acid selected from the group consisting of phosphoric, sulfuric, and hydrochloric or mixtures thereof.
Claim 12
Dependent Claim
18 words
The process of claim 9 wherein the composition is reprotonated with quinone sulfonic acid or methane sulfonic acid.
Claim 13
Dependent Claim
27 words
The process of claim 1 wherein the strong base is selected from the group consisting of alkali metal and alkaline earth metal hydroxides, alkoxides and amine bases.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
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