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US4108802A
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US
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Quaternary ammonium polymers and photographic materials containing same
Assignee: Ilford Imaging UK Ltd
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Filing: 1976-05-20
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Granted: 1978-08-22
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Expires: 1996-05-20
Abstract
Abstract Polymers comprising repeating units which contain groupings of the formula --CH 2 OOCR 1 , wherein R 1 is hydrogen or alkyl with 1 to 14 carbon atoms and the --CH 2 --group is directly bonded to a quaternary nitrogen atom. The polymers are useful in photographic materials as mordants for anionic compounds especially for anionic dyes.
Inventors
- 👤 Peter John Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:48
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/44; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/835
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
75 words
A polymeric material which comprises repeating units of the formulae ##STR30## wherein R 2 is alkyl of 1 to 7 carbon atoms, X is a chloride or bromide anion and n is an integer of 1 to 15, ##STR31## wherein X is a chloride or bromide anion and n is an integer of 1 to 15, or ##STR32## wherein X is a chloride or bromide anion and n is an integer of 1 to 15.
Claim 2
Dependent Claim
75 words
A polymeric material which comprises repeating units of the formulae ##STR30## wherein R 2 is alkyl of 1 to 7 carbon atoms, X is a chloride or bromide anion and n is an integer of 1 to 15, ##STR31## wherein X is a chloride or bromide anion and n is an integer of 1 to 15, or ##STR32## wherein X is a chloride or bromide anion and n is an integer of 1 to 15.
Claim 3
Dependent Claim
10 words
Polymeric material according to claim 1 wherein n is 1.
Claim 4
Dependent Claim
40 words
Polymeric material of claim 1, which comprises repeating units of the formula ##STR33## wherein R 2 is alkyl of 1 to 7 carbon atoms, X is a chloride or bromide anion and n is an integer of 1 to 15.
Claim 5
Dependent Claim
30 words
Polymeric material of claim 1, which comprises repeating units of the formula ##STR34## wherein X is a chloride or bromide anion and n is an integer of 1 to 15.
Claim 6
Dependent Claim
30 words
Polymeric material of claim 1, which comprises repeating units of the formula ##STR35## wherein X is a chloride or bromide anion and n is an integer of 1 to 15.
Claim 7
Dependent Claim
53 words
Polymeric material of claim 3 which comprises repeating units of the formula ##STR36## wherein R 2 is alkyl of 1 to 7 carbon atoms, X is a chloride or bromide anion and n is an integer of 1 to 15, and repeating units derived from acrylic or methacrylic acid, their esters or amides.
Claim 8
Dependent Claim
16 words
A combination of an anionic dye mordanted by a polymeric material as claimed in claim 1.
Claim 9
Dependent Claim
10 words
A polymer according to claim 6 of the formula ##STR37##
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) | 1981-08-21 | 1982-02-20 | 1982-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-21 | 1986-02-20 | 1986-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-21 | 1990-02-20 | 1990-08-22 | $7700.00 | Window Closed / Lapsed |