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US3959236A
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Polymers and copolymers of hydroxyalkyl methacrylate sulfo esters and the method for their manufacturing
Assignee: Czech Academy of Sciences
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Filing: 1974-08-08
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Granted: 1976-05-25
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Expires: 1994-08-08
Abstract
Abstract The invention relates to chemically reactive polymers and copolymers of hydroxyalkyl methacrylate sulfo esters with monomer units of the formula ##EQU1## where n is an integer equal to 1 or 2 and R is C 6 H 5 --, p--CH 3 C 6 H 4 --, or CH 3 -- and to the method of manufacturing the technically useful articles from these polymers, namely crosslinked beads, membranes, blocks, etc., by free-radical polymerization or copolymerization in bulk, solution or in two-phase aqueous dispersion system under conditions whereby the hydrolysis of the sulfo ester is suppressed.
Inventors
- 👤 Jan Peska
- 👤 Milan Benes
- 👤 Jiri Stamberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:04
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/06; B01D71/40; B01D71/401; B01D71/4011; B01J; B01J20/00; B01J20/22; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/38; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
52 words
A chemically reactive polymer of polymerized hydroxyalkylmethacrylate sulfo esters characterized by monomer units of the formula ##EQU4## wherein n is an integer equal to 1 or 2 and R is selected from the group consisting of C 6 H 5 --, p--CH 3 C 6 H 4 -- and CH 3 --.
Claim 2
Dependent Claim
52 words
A chemically reactive polymer of polymerized hydroxyalkylmethacrylate sulfo esters characterized by monomer units of the formula ##EQU4## wherein n is an integer equal to 1 or 2 and R is selected from the group consisting of C 6 H 5 --, p--CH 3 C 6 H 4 -- and CH 3 --.
Claim 3
Dependent Claim
16 words
A chemically reactive polymer according to claim 1 wherein said sulfo ester is ethylenemethacrylate benzene sulfonate.
Claim 4
Dependent Claim
16 words
A chemically reactive polymer according to claim 1 wherein said sulfo ester is ethylenemethacrylate toluene sulfonate.
Claim 5
Dependent Claim
16 words
A chemically reactive polymer according to claim 1 wherein said sulfo ester is ethylenemethacrylate methane sulfonate.
Claim 6
Dependent Claim
17 words
A chemically reactive polymer according to claim 1 wherein said sulfo ester is hydroxyethoxyethylmethacrylate benzene sulfo ester
Claim 7
Dependent Claim
46 words
A chemically reactive polymer according to claim 1 containing at acrylamide, one copolymerizable monomer selected from the group consisting of styrene, lower alkyl (C 1 -C 4 ) methacrylates, lower alkyl (C 1 -C 4 ) acrylates, hydroxyethylmethacrylate, acrlamide, methacrylamide, acrylonitrile and methacrylonitrile, in copolymerized form.
Claim 8
Dependent Claim
22 words
A chemically active polymer according to claim 6 wherein said sulfo ester is ethylenemethacrylate toluene sulfonate and said copolymerizable monomer is styrene.
Claim 9
Dependent Claim
58 words
Method of preparing a polymer according to claim 1 which comprises polymerizing an ethylenemethacrylate sulfo ester of the formula ##EQU5## wherein n and R are as above defined in the presence of an azo or peroxide free radical liberating initiator, at a temperature of less than 60°C. and under conditions whereby hydrolysis of the sulfo ester is suppressed.
Claim 10
Dependent Claim
49 words
Method of preparing a polymer according to claim 6 which comprises copolymerizing said sulfo ester and copolymerizable comonomer in the presence of an azo or peroxide free radical liberating initiator at a temperature of less than 60°C. and under conditions whereby the hydrolysis of the sulfo ester is suppressed.
Claim 11
Dependent Claim
13 words
Method according to claim 9 wherein there is additionally present a crosslinking agent.
Claim 12
Dependent Claim
14 words
Method according to claim 9 wherein there is additionally present a chain transfer agent.
References Cited (Backward Citations)
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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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |