Patent US3965039A successfully refreshed from Google Patents.
US3965039A
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Ion-exchange molded catalyst and method of its preparation
Assignee: Individual
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Filing: 1974-11-19
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Granted: 1976-06-22
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Expires: 1994-11-19
Abstract
Abstract An ion-exchange molded catalyst consisting of a sulfonated copolymer of styrene with divinylbenzene or diisopropenyl benzene and a sulfonated thermoplastic material taken in a proportion of 1-4:1-2 by weight, respectively. The method of preparation of the ion-exchange molded catalyst consists in mixing the copolymer of styrene with divinylbenzene or diisopropenyl benzene and the thermoplastic material in a proportion of 1-4:1-2, by weight respectively. The obtained mixture is molded by extrusion with heating to the melting point of the thermoplastic material and forming molded elements which are treated first with a sulfonating agent at 20° - 100°C, then with water. The catalyst according to the invention can be made in the form of elements of various shapes and sizes. The catalyst has a high mechanical strength (compression strength reaches 200 kg/cm 2 ), a high catalytic activity and a high heat resistance (can be used at temperatures of up to 130°C). The static exchange capacity of the catalyst reaches 4.25 mg-equiv/g of dry catalyst. The method of preparing the catalyst is distinguished by simplicity and high efficiency.
Inventors
- 👤 Donat Nikolaevich Chaplits
- 👤 Vladimir Pavlovich Kazakov
- 👤 Emmanuil Gabrielovich Lazariants
- 👤 Vladimir Filippovich Chebotaev
- 👤 Mikhail Ivanovich Balashov
- 👤 Leonid Antonovich Serafimov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:13
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/16; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10; C07C1/00; C07C1/20; C07C1/24; C07C37/14; B01J2231/00; B01J2231/30; B01J2231/32; B01J2231/323; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/08; C07C2531/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
80 words
An ion-exchange molded catalyst consisting of a sulfonated copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene and of a sulfonated thermoplastic material selected from the group consisting of polyethylene, polypropylene and polyvinylchloride taken in a proportion of 1-4:1-2 by weight respectively, said catalyst having a compression strength from 98 to 200 kg/cm 2 and a static exchange capacity in terms of 0.1N NaOH of from 2.7 to 4.25 mg-equiv/g of catalyst.
Claim 2
Dependent Claim
80 words
An ion-exchange molded catalyst consisting of a sulfonated copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene and of a sulfonated thermoplastic material selected from the group consisting of polyethylene, polypropylene and polyvinylchloride taken in a proportion of 1-4:1-2 by weight respectively, said catalyst having a compression strength from 98 to 200 kg/cm 2 and a static exchange capacity in terms of 0.1N NaOH of from 2.7 to 4.25 mg-equiv/g of catalyst.
Claim 3
Independent Claim
124 words
A method of preparation of an ion-exchange molded catalyst consisting of a sulfonated copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene, and a sulfonated thermoplastic material selected from the group consisting of polyethylene, polypropylene and polyvinylchloride taken in a proportion of 1-4:1-2 by weight respectively, said method consisting of mixing a copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene, and a thermoplastic material in a proportion of 1-4:1-2 by weight respectively; molding the obtained mixture by extrusion with heating to the melting point of the thermoplastic material to produce molded elements; treating said molded elements first with a sulfonating agent at 20°-100°C and then with water.
Claim 4
Independent Claim
124 words
A method of preparation of an ion-exchange molded catalyst consisting of a sulfonated copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene, and a sulfonated thermoplastic material selected from the group consisting of polyethylene, polypropylene and polyvinylchloride taken in a proportion of 1-4:1-2 by weight respectively, said method consisting of mixing a copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene, and a thermoplastic material in a proportion of 1-4:1-2 by weight respectively; molding the obtained mixture by extrusion with heating to the melting point of the thermoplastic material to produce molded elements; treating said molded elements first with a sulfonating agent at 20°-100°C and then with water.
Claim 5
Dependent Claim
26 words
The method of claim 2 wherein the sulfonating agent is concentrated sulfuric acid and the molded elements are treated with said acid at 60° - 100°C.
Claim 6
Dependent Claim
25 words
The method of claim 2 wherein the sulfonating agent is chlorosulfonic acid and the molded elements are treated with said acid at 20° - 60°C.
Claim 7
Dependent Claim
23 words
The method of claim 2 wherein the molded elements are held in a chlorine-containing aliphatic solvent before their treatment with the sulfonating agent.
Claim 8
Dependent Claim
21 words
The method of claim 5 wherein the molded elements are treated with acetone before being held in a chlorine-containing aliphatic solvent.
Claim 9
Dependent Claim
77 words
The method of claim 2 wherein the copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene is mixed with the thermoplastic material in the presence of water in a proportion of up to 10% of the weight of the mixture of the source components and the molded elements are dried at 105° - 110°C, then held in a chlorine containing aliphatic solvent, before their treatment with the sulfonating agent.
Claim 10
Dependent Claim
82 words
The method of claim 2 wherein the copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene is mixed with the thermoplastic material in the presence of an organic material which is capable of blending with said thermoplastic material, which is selected from the group consisting of mineral oils, complex esters, and nonionogenic emulsifying agents and is taken in a proportion of up to 20% of the weight of the mixture of the source components.
Claim 11
Dependent Claim
23 words
The method of claim 8 wherein the molded elements are held in a chlorine-containing aliphatic solvent before their treatment with the sulfonating agent.
Claim 12
Dependent Claim
76 words
The method of claim 8 wherein the copolymer of styrene with a dialkenyl benzene selected from the group consisting of divinylbenzene and diisopropenyl benzene is mixed with the thermoplastic material and the organic material in the presence of water taken in a proportion of up to 20% and 10%, respectively, of the weight of the mixture of the source components and the molded elements are dried at 105° - 110°C before treatment with the sulfonating agent.
Claim 13
Dependent Claim
9 words
The catalyst prepared by the method of claim 2.
Claim 14
Dependent Claim
21 words
The method of claim 5 wherein the chlorinated aliphatic solvent is selected from the group consisting of carbon tetrachloride and dichloroethane.
Claim 15
Dependent Claim
21 words
The method of claim 6 wherein the chlorinated aliphatic solvent is selected from the group consisting of carbon tetrachloride and dichloroethane.
Claim 16
Dependent Claim
21 words
The method of claim 7 wherein the chlorinated aliphatic solvent is selected from the group consisting of carbon tetrachloride and dichloroethane.
Claim 17
Dependent Claim
21 words
The method of claim 9 wherein the chlorinated aliphatic solvent is selected from the group consisting of carbon tetrachloride and dichloroethane.
Claim 18
Dependent Claim
22 words
The method of claim 2 wherein the sulfonating agent is selected from the group consisting of concentrated sulfuric acid and chlorosulfonic acid.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |