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US3926969A
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Triazole-bis(benzoxazole) optical brighteners
Assignee: Sandoz AG
•
Filing: 1973-11-19
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Granted: 1975-12-16
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Expires: 1993-11-19
Abstract
Abstract The present invention relates to compounds of formula I, in which R1 signifies a hydrogen or chlorine atom or a (C1 6) alkyl radical, EACH OF R2 and R4, which may be the same or different, signifies a hydrogen or a chlorine atom, a cyano group, a (C1 12) alkyl, phenyl, phenyl (C1 6) alkyl, benzyloxy, phenoxy, (C1 6) alkoxy or a naphthotriazolyl-2 radical, and EACH OF R3 and R5, which may be the same or different, signifies a hydrogen atom, a cyano group or a (C1 12) alkyl or (C1 6) alkoxy radical, OR, R2 and R3 together, and/or R4 and R5 together, form a benzene ring, and R6 signifies a hydrogen atom or a cyano group, WHICH COMPOUNDS ARE USEFUL AS OPTICAL BRIGHTENERS.
Inventors
- 👤 Fritz Fleck
- 👤 Horst Schmid
- 👤 Salvatore Valenti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:34
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/54; C07D263/56; C07D263/57; C07D249/00; C07D249/02; C07D249/04; C07D249/06; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/35; C09; C09B; C09B29/00; C09B29/32; C09B29/325
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
6 words
A COMPOUND OF THE FORMULA 1,
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE FORMULA 1,
Claim 3
Dependent Claim
75 words
A compound according to claim 1, in which, where R1 is an alkyl radical, such radical contains 1 to 4 carbon atoms, where any of R2, R3, R4 and R5 is an alkyl or alkoxy radical, such alkyl radical contains 1 to 8 carbon atoms and such alkoxy radical contains 1 to 4 carbon atoms, and where any of R2 and R4 is a phenylalkyl radical such alkyl moiety contains 1 to 3 carbon atoms.
Claim 4
Dependent Claim
95 words
A compound according to claim 1, in which each of R2 and R4, which may be the same or different, is a hydrogen atom, (C1 8) alkyl radical, a phenyl radical, a cyano group, a (C1 4) alkoxy radical or a naphthotriazolyl-2-radical, and each of R3 and R5, which may be the same or different, is a hydrogen atom, a cyano group, a (C1 8) alkyl radical or a (C1 4) alkoxy radical and R1 is a hydrogen atom or a (C1 4) alkyl radical, and R6 is a hydrogen atom or a cYano group.
Claim 5
Dependent Claim
23 words
A compound according to claim 1, in which each of R2 and R4, which may be the same or different is a naphthotriazolyl-2-radical.
Claim 6
Dependent Claim
28 words
A compound according to claim 1, in which each of R2 and R4, which may be the same or different, have a significance other than a naphthoriazolyl-2 radical.
Claim 7
Dependent Claim
9 words
A compound according to claim 3, of formula Ia,
Claim 8
Dependent Claim
21 words
A compound according to claim 6, in which R2'' and R4'' , and R3'' and R5'' respectively, have the same significance.
Claim 9
Dependent Claim
9 words
A compound according to claim 3, of formula Ib,
Claim 10
Dependent Claim
9 words
A compound according to claim 3, of formula Ic,
Claim 11
Dependent Claim
23 words
A compound according to claim 8, in which R2'''' and R4'''' have the same significance and R3'''' and R5'''' have the same significance.
Claim 12
Dependent Claim
23 words
A compound according to claim 9, in which R2'''''' and R4'''''' have the same significance and R3'''''' and R5'''''' have the same significance.
Claim 13
Dependent Claim
27 words
A compound according to claim 6, in which, where any of R2'' to R5'' is an alkyl radical such alkyl radical contains 1 to 4 carbon atoms.
Claim 14
Dependent Claim
41 words
A compound according to claim 8, in which, where any one of R2'''' to R5'''' is an alkyl radical or alkoxy radical, such alkyl radical contains 1 to 4 carbon atoms and such alkoxy radical contains 1 to 3 carbon atoms.
Claim 15
Dependent Claim
45 words
A compound according to claim 9, in which, where any one of R2'''''' to R5'''''' is an alkyl radical, such alkyl radical contains 1 to 4 carbon atoms and, where any one of R2'''''' signifies alkoxy, such alkoxy radical contains 1 to 3 carbon atoms.
Claim 16
Dependent Claim
13 words
A compound according to claim 6, in which R6 is a hydrogen atom.
Claim 17
Dependent Claim
13 words
A compound according to claim 8, in which R6 is a hydrogen atom.
Claim 18
Dependent Claim
13 words
A compound according to claim 9, in which R6 is a hydrogen atom.
Claim 19
Dependent Claim
22 words
A compound according to claim 1, in which, where the benzoxazole rings are di-substituted, such substituents are in the 4- and 6-positions.
Claim 20
Dependent Claim
23 words
A compound according to claim 1, in which, where the benzoxazole rings are mono substituted such substituent is in the 5- or 6-position.
Claim 21
Dependent Claim
13 words
A compound according to claim 1, in which the benzoxazole rings are unsubstituted.
Claim 22
Dependent Claim
8 words
A compound according to claim 20 of formula
Claim 23
Dependent Claim
8 words
A compound according to claim 8, of formula
Claim 24
Dependent Claim
8 words
A compound according to claim 20, of formula
Claim 25
Dependent Claim
8 words
A compound according to claim 8, of formula
Claim 26
Dependent Claim
8 words
A compound according to claim 8, of formula
Claim 27
Dependent Claim
8 words
A compound according to claim 8, of formula
References Cited (Backward Citations)
US3412089A
Cited
US3456217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |