US3856714A
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Polyviologens
Assignee: Polaroid Corp
•
Filing: 1973-09-07
•
Granted: 1974-12-24
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Expires: 1993-09-07
Abstract
Abstract Novel polyviologen compounds useful in variable density lightfiltering devices are provided which have repeating units (in oxidized dicationic form) represented by the formula: WHEREIN R1 is propylene or a straight-chain alkylene group having from six to 12 carbon atoms; R2 is -H or a hydrocarbon group having from one to six carbon atoms; Z is a bivalent radical resulting from the removal of both active halogen atoms from an aromatic dihalide or from an aliphatic dicarboxylic acid dihalide having a straight four to eight carbon alkylene chain between terminal carboxylic acid halide groups; and X is an anion.
Inventors
- 👤 P Moore
- 👤 M Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:37
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0273; C08G69/00; C08G69/02; C08G69/26; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
11 words
A POLYMER HAVING IN ITS STUCTURE REPEATING UNITS OF THE FORMULA:
Claim 2
Dependent Claim
11 words
A POLYMER HAVING IN ITS STUCTURE REPEATING UNITS OF THE FORMULA:
Claim 3
Dependent Claim
10 words
A polymer as defined in claim 1 which is film-forming.
Claim 4
Dependent Claim
16 words
A polymer as defined in claim 2 having a molecular weight in excess of about 10,000.
Claim 5
Dependent Claim
39 words
A polymer as defined in claim 2 having an appendage substituent which is available subsequent to the formation of said film to enter into a condensation reaction with another reagent and thereby cross-link said polymer into a water-insoluble film.
Claim 6
Dependent Claim
20 words
A polymer as defined in claim 4 wherein said cross-linking substituent is a substituent on the aromatic nucleus of Z.
Claim 7
Dependent Claim
28 words
A polymer as defined in claim 5 wherein said nuclear cross-linking substituent is selected from the group consisting of halide, -OH, -SH, -COOH, -SO2OH, -CH2CH2OH, and -C6H5CH CHCOOH.
Claim 8
Dependent Claim
13 words
A polymer as defined in claim 1 wherein R2 is alkyl or aryl.
Claim 9
Dependent Claim
27 words
A polymer as defined in claim 1 wherein X is a simple anion selected from the group consisting of halide, sulfate, nitrate, acetate, carbonate, azide and cyanide.
Claim 10
Dependent Claim
13 words
A pOlymer as defined in claim 1 wherein X is a polymeric anion.
Claim 11
Dependent Claim
19 words
A polymer as defined in claim 9 wherein said polymeric anion is the polyanion of a cation exchange resin.
Claim 12
Dependent Claim
18 words
A polymer as defined in claim 9 wherein said polymeric anion is the polyanion of sodium carboxymethyl cellulose.
Claim 13
Dependent Claim
20 words
A polymer as defined in claim 1 wherein X is an internal anion and said polymer is an internal salt.
Claim 14
Dependent Claim
19 words
A polymer as defined in claim 12 wherein said internal anion is attached to the aromatic nucleus of Z.
Claim 15
Dependent Claim
55 words
A polymer as defined in claim 1 wherein Z is an carbocyclic dicarbonyl group, an aliphatic dicarbonyl group having a straight four to eight carbon alkylene chain between terminal carbonyl groups, a bivalent azine nucleus or a bivalent group having one bond to an azine nucleus and the other bond to an carbocyclic carbonyl group.
Claim 16
Dependent Claim
10 words
A polymer as defined in claim 1 wherein Z is:
Claim 17
Dependent Claim
10 words
A polymer as defined in claim 1 wherein Z is:
Claim 18
Dependent Claim
13 words
A polymer as defined in claim 1 comprising repeating units of the formula:
Claim 19
Dependent Claim
13 words
A polymer as defined in claim 1 comprising repeating units of the formula:
Claim 20
Dependent Claim
13 words
A polymer as defined in claim 1 comprising repeating units of the formula:
Claim 21
Dependent Claim
13 words
A polymer as defined in claim 1 comprising repeating units of the formula:
Claim 22
Dependent Claim
14 words
A polymer as defined in claim 20 which is cross-linked with an aliphatic diamine.
Claim 23
Dependent Claim
8 words
A copolymer comprising repeating units of the formulae:
Claim 24
Dependent Claim
8 words
A copolymer comprising repeating units of the formulae:
Claim 25
Dependent Claim
20 words
A copolymer as defined in claim 22 wherein the ratio of A units to B units is 3 to 1.
Claim 26
Dependent Claim
14 words
A copolymer as defined in claim 23 which is cross-linked with an aliphatic diamine.
Claim 27
Dependent Claim
10 words
A polymer as defined in claim 1 which is water-soluble.
Claim 28
Dependent Claim
13 words
A water-insoluble cross-linked polymer having in its structure repeating units of the formula:
Claim 29
Dependent Claim
13 words
A water-insoluble cross-linked polymer having in its structure repeating units of the formula:
Claim 30
Dependent Claim
56 words
A cross-linked polymer as defined in claim 26 wherein Z is a carbocyclic dicarbonyl group, an aliphatic dicarbonyl group having a straight four to eight carbon alkylene chain between terminal carbonyl groups, a bivalent azine nucleus or a bivalent group having one bond to an azine nucleus and the other bond to a carbocyclic carbonyl group.
Claim 31
Dependent Claim
20 words
A cross-linked polymer as defined in claim 26 wherein said cross-linking substituent is attached to the aromatic nucleus of Z.
Claim 32
Dependent Claim
28 words
A cross-linked polymer as defined in claim 28 wherein said cross-linking substituent is selected from the group consisting of halide, -OH, -SH, -COOH, -SO2OH, -CH2CH2OH and -C6H5CH CHCOOH.
Claim 33
Dependent Claim
17 words
A cross-linked polymer as defined in claim 26 wherein said polymer is cross-linked with an aliphatic diamine.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |