US4463135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the functionalization of polystyrene resins
Assignee: Goodyear Tire and Rubber Co
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Filing: 1982-10-25
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Granted: 1984-07-31
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Expires: 2002-10-25
Abstract
Abstract There is disclosed a process for the functionalization of polymeric resins, wherein a halo-methylated resin, with a crosslink density of at least 4 percent is reacted with an alkyllithium wherein the alkyl radical is 1 to 12 carbon atoms; followed by a reaction to produce a polymeric material having a desired pendant functionality. Materials produced from the process of this invention have utility as intermediates in the production of polymer-bound catalysts and exchange resins.
Inventors
- 👤 Neil A. Maly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:38
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/42; C08F8/30; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
102 words
A process for the functionalization of a halo-methylated polystyrene resin that contains at least 4 percent but more than 75 percent by weight divinylbenzene which comprises (A) contacting said resin in an anhydrous environment with alkyllithium wherein the alkyl radical is of 1 to 12 carbon atoms at a temperature of 0° C.; (B) warming the mixture to ambient temperature and then adding at least one compound selected from the group consisting of: 2,2'-dipyridyl, phenylisocyanate, triphenylphosphine, sulfur, trimethyl borate, 1,2-dibromoethane, N,N-dimethylformamide, cyclopentadiene and carbon dioxide; (C) heating the mixture to reflux and thereafter (D) filtering the mixture to obtain the functionalized resin.
Claim 2
Dependent Claim
102 words
A process for the functionalization of a halo-methylated polystyrene resin that contains at least 4 percent but more than 75 percent by weight divinylbenzene which comprises (A) contacting said resin in an anhydrous environment with alkyllithium wherein the alkyl radical is of 1 to 12 carbon atoms at a temperature of 0° C.; (B) warming the mixture to ambient temperature and then adding at least one compound selected from the group consisting of: 2,2'-dipyridyl, phenylisocyanate, triphenylphosphine, sulfur, trimethyl borate, 1,2-dibromoethane, N,N-dimethylformamide, cyclopentadiene and carbon dioxide; (C) heating the mixture to reflux and thereafter (D) filtering the mixture to obtain the functionalized resin.
Claim 3
Dependent Claim
128 words
A process for the preparation of a resin having catalytic functionality which comprises (A) contacting a halo-methylated polystyrene resin that contains at least 4 percent but not more than 75 percent by weight divinylbenzene in an anhydrous environment with alkyllithium, wherein the alkyl radical is of 1 to 12 carbon atoms at a temperature of 0° C.; (B) warming the mixture to ambient temperature and then adding at least one compound selected from the group consisting of: 2,2'-dipyridyl, phenylisocyanate, triphenylphosphine, sulfur, trimethyl borate, 1,2-dibromoethane, N,N-dimethylformamide, cyclopentadiene and carbon dioxide; (C) heating the mixture to reflux and thereafter (D) contacting the reaction product with a metal complex selected from the group consisting of CuCl, CoCl 2 , NiCl 2 and PdCl 2 to obtain the resin having catalytic functionality.
Claim 4
Dependent Claim
128 words
A process for the preparation of a resin having catalytic functionality which comprises (A) contacting a halo-methylated polystyrene resin that contains at least 4 percent but not more than 75 percent by weight divinylbenzene in an anhydrous environment with alkyllithium, wherein the alkyl radical is of 1 to 12 carbon atoms at a temperature of 0° C.; (B) warming the mixture to ambient temperature and then adding at least one compound selected from the group consisting of: 2,2'-dipyridyl, phenylisocyanate, triphenylphosphine, sulfur, trimethyl borate, 1,2-dibromoethane, N,N-dimethylformamide, cyclopentadiene and carbon dioxide; (C) heating the mixture to reflux and thereafter (D) contacting the reaction product with a metal complex selected from the group consisting of CuCl, CoCl 2 , NiCl 2 and PdCl 2 to obtain the resin having catalytic functionality.
Claim 5
Dependent Claim
23 words
A process according to claim 2 wherein the alkyllithium is n-butyllithium, the compound is 2,2'-dipyridyl and the metal complex is PdCl 2 .
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) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |