US4065414A
Expired / Lapsed
US
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Polyion complex and polyion complex film
Assignee: Tosoh Corp
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Filing: 1976-08-06
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Granted: 1977-12-27
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Expires: 1996-08-06
Abstract
Abstract A crosslinkable polyion complex is prepared by reacting a polycation polymer having an ethylenic double bond at a terminal position in the repeating unit of the polymer with a polyanion polymer. A polyion complex film is prepared by dissolving the crosslinkable polyion complex in a solvent mixture of water-organic solvent-acid, base or salt and then forming a film by casting or coating the solution on a substrate.
Inventors
- 👤 Toru Seita
- 👤 Akihiko Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:30
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0081; B01D67/009; B01D67/0002; B01D67/0006; B01D67/0009; B01D67/0011; B01D71/00; B01D71/06; B01D71/30; C; C08; C08J; C08J3/00; C08J3/24; C08J3/246; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; C08L1/286; C08L39/00; C08L39/04; C08L39/08; C08L5/00; C08L5/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
233 words
A polyion complex produced by reacting a polyanion polymer selected from the group consisting of polystyrenesulfonic acid, polyvinylsulfonic acid, polyacrylic acid, polymethacrylic acid, carboxymethyl cellulose, alginic acid or an alkali salt thereof with a polycation polymer having a terminal ethylenic double bond in the repeating units of the polymer and having repeating units of the formula: ##STR13## wherein R 1 represents hydrogen, or a C 1-4 alkyl group; R 2 represents a group having the formula: --CH.sub.2 - C(R) = CH.sub.2, --ch.sub.2).sub.m COOC (R) = CH.sub.2, --ch.sub.2).sub.m COOCH.sub.2 - C (R) = CH.sub.2, --ch.sub.2).sub.m O - C(R) = CH.sub.2, --ch.sub.2).sub.m O - CH.sub.2 - C(R) = CH.sub.2, or ##STR14## wherein R is hydrogen or a C.sub.1-4 alkyl group, m is 1 to 3 and n is 0 or 1; R.sub.3, R.sub.4 and R.sub.5 represents a C.sub.1-4 alkyl group or an alkylol group and at least one of R.sub.3, R.sub.4 and R.sub.5 is the group of R.sub.2 or a group having the formula: --CH.sub.2).sub.m CONH - C(R) - CH.sub.2, wherein R is hydrogen or a C 1-4 alkyl group and m is 1 or 2; n is 0 or an integer less than 40,000; x is an integer of 10 to 50,000; M represents a vinyl monomer having an ethylenic double bond selected from the group consisting of styrene, α-methylstyrene, acrylonitrile, methacrylonitrile, and butadiene; and X represents a halogen atom or a hydroxyl group.
Claim 2
Dependent Claim
233 words
A polyion complex produced by reacting a polyanion polymer selected from the group consisting of polystyrenesulfonic acid, polyvinylsulfonic acid, polyacrylic acid, polymethacrylic acid, carboxymethyl cellulose, alginic acid or an alkali salt thereof with a polycation polymer having a terminal ethylenic double bond in the repeating units of the polymer and having repeating units of the formula: ##STR13## wherein R 1 represents hydrogen, or a C 1-4 alkyl group; R 2 represents a group having the formula: --CH.sub.2 - C(R) = CH.sub.2, --ch.sub.2).sub.m COOC (R) = CH.sub.2, --ch.sub.2).sub.m COOCH.sub.2 - C (R) = CH.sub.2, --ch.sub.2).sub.m O - C(R) = CH.sub.2, --ch.sub.2).sub.m O - CH.sub.2 - C(R) = CH.sub.2, or ##STR14## wherein R is hydrogen or a C.sub.1-4 alkyl group, m is 1 to 3 and n is 0 or 1; R.sub.3, R.sub.4 and R.sub.5 represents a C.sub.1-4 alkyl group or an alkylol group and at least one of R.sub.3, R.sub.4 and R.sub.5 is the group of R.sub.2 or a group having the formula: --CH.sub.2).sub.m CONH - C(R) - CH.sub.2, wherein R is hydrogen or a C 1-4 alkyl group and m is 1 or 2; n is 0 or an integer less than 40,000; x is an integer of 10 to 50,000; M represents a vinyl monomer having an ethylenic double bond selected from the group consisting of styrene, α-methylstyrene, acrylonitrile, methacrylonitrile, and butadiene; and X represents a halogen atom or a hydroxyl group.
Claim 3
Dependent Claim
9 words
A film of the polyion complex of claim 1.
Claim 4
Dependent Claim
33 words
The polyion complex film of claim 2, which is formed by casting a solution of the polyion complex in a solvent mixture of water- a water compatible organic solvent-an acid, base or salt.
Claim 5
Dependent Claim
16 words
The polyion complex film of claim 2, which is supported on a cloth, gauze or net.
Claim 6
Dependent Claim
14 words
A polyion complex film of claim 2, which is crosslinked by heat or irradiation.
Claim 7
Dependent Claim
27 words
The polyion complex film of claim 3, wherein said water compatible organic solvent is methanol, ethanol, N,N-dimethylacetoamide, N,N-dimethylformamide, N,N-dimethylsulfoxide, acetone, tetrahydrofuran, dioxane, cyclohexanone, acetonitrile or mixtures thereof.
Claim 8
Dependent Claim
24 words
The polyion complex film of claim 3, wherein the concentration of said polyion complex in said solvent mixture ranges from 5 to 70 wt.%.
Claim 9
Dependent Claim
28 words
The polyion complex film of claim 3, wherein said cast solution is immersed in water, a water compatible organic solvent, or mixtures thereof at 0° to 80° C.
Claim 10
Dependent Claim
42 words
The polyion complex film of claim 3, wherein said acid is hydrochloric acid, sulfuric acid or nitric acid; said base is an alkali metal hydroxide and said salt is an alkali metal or alkaline earth metal halide, nitrate, sulfate, perchlorate or persulfate.
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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |