Patent US4102827A successfully refreshed from Google Patents.
US4102827A
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Novel polyelectrolytes
Assignee: California Institute of Technology
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Filing: 1976-01-21
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Granted: 1978-07-25
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Expires: 1996-01-21
Abstract
Abstract Cationic polyelectrolytes are formed by the polymerization in absence of oxygen of a monomer of the general formula: ##STR1## where x is 3 or more than 6 and Z is I, Br or Cl to form high charge density linear polymers. Segments of the linear polymer may be attached to or formed in the presence of polyfunctional reactive tertiary amines or halogen polymeric substrates or polyfunctional lower molecular reactive polyfunctional substrates to form branched or star polyelectrolytes by a quaternization polymerization reaction.
Inventors
- 👤 Alan Rembaum
- 👤 Shiao-Ping Siao Yen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:26
CPC Classifications
C; C08; C08G; C08G81/00; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J37/00; B01J37/0009; C02; C02F; C02F1/00; C02F1/52; C02F1/54; C08F; C08F8/00; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/0226; B01J31/0234; B01J31/0235; B01J31/0239
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
173 words
A polyelectrolyte having an intrinsic viscosity molecular weight of at least 30,000 as determined by light scattering in 0.4M K Br consisting essentially of the adduct of linear polymeric segments of the formula: ##STR16## where Z is chloro, bromo or iodo, n is an integer and x is 3 or 7 to 10 linked directly by means of the quaternization reaction between the (CH 3 ) 2 N-- or Z terminal groups of the segments to the tertiary amine or Z groups of a polyfunctional central monomer or polymeric substrate, said central monomer being selected from compounds of the formula: ##STR17## where Y is a polyvalent low molecular weight organic group having a valence of 3+m, m is an integer from 0-3, R 3 is selected from alkylene, phenylene or alkyl ester and E is Z or (R 4 ) 3 N-- where R 4 is alkyl, aryl or aralkyl and said polymeric substrates are selected from the group consisting of polyvinylpyridine, polyethyleneimine, polyvinylbenzylchloride, poly-(dialkylaminoalkyl acrylate), poly-(dialkylamino alkyl acrylamide, polyepichlorohydrin and polydialkylaminoalkylethylene oxide.
Claim 2
Dependent Claim
173 words
A polyelectrolyte having an intrinsic viscosity molecular weight of at least 30,000 as determined by light scattering in 0.4M K Br consisting essentially of the adduct of linear polymeric segments of the formula: ##STR16## where Z is chloro, bromo or iodo, n is an integer and x is 3 or 7 to 10 linked directly by means of the quaternization reaction between the (CH 3 ) 2 N-- or Z terminal groups of the segments to the tertiary amine or Z groups of a polyfunctional central monomer or polymeric substrate, said central monomer being selected from compounds of the formula: ##STR17## where Y is a polyvalent low molecular weight organic group having a valence of 3+m, m is an integer from 0-3, R 3 is selected from alkylene, phenylene or alkyl ester and E is Z or (R 4 ) 3 N-- where R 4 is alkyl, aryl or aralkyl and said polymeric substrates are selected from the group consisting of polyvinylpyridine, polyethyleneimine, polyvinylbenzylchloride, poly-(dialkylaminoalkyl acrylate), poly-(dialkylamino alkyl acrylamide, polyepichlorohydrin and polydialkylaminoalkylethylene oxide.
Claim 3
Dependent Claim
15 words
A polyelectrolyte according to claim 1 in which x is 3 and Z is chloro.
Claim 4
Dependent Claim
11 words
A polyelectrolyte according to claim 1 in which Y is aromatic.
Claim 5
Dependent Claim
13 words
A polyelectrolyte according to claim 3 in which R 3 is lower alkylene.
Claim 6
Dependent Claim
14 words
A polyelectrolyte according to claim 4 in which E is chloro, bromo or iodo.
Claim 7
Dependent Claim
28 words
A polyelectrolyte according to claim 5 in which Y is a benzene or alkylated benzene, R 3 is methylene, E is chloro and m is 0 or 1.
Claim 8
Dependent Claim
18 words
A polyelectrolyte according to claim 6 in which the central monomer is selected from 2,3,6-tri-(chloromethyl)-mesitylene, 1,2,4,5-tetra-(chloromethyl)-benzene or 1,2,4-tri-(chloromethyl)-benzene.
Claim 9
Dependent Claim
28 words
A polyelectrolyte according to claim 1 in which the central monomer is selected from compounds of the formula: ##STR18## where p is an integer from 2 to 10.
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) | 1981-07-24 | 1982-01-23 | 1982-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-24 | 1986-01-23 | 1986-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-24 | 1990-01-23 | 1990-07-25 | $7700.00 | Window Closed / Lapsed |