Patent US4845235A successfully refreshed from Google Patents.
US4845235A
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Pyrroline derivative
Assignee: Nippon Kayaku Co Ltd
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Filing: 1987-05-15
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Granted: 1989-07-04
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Expires: 2007-05-15
Abstract
Abstract A pyrroline derivative represented by the formula: ##STR1## wherein R 1 and R 2 each independently stand for an alkyl (C 1-6 ), allyl, alkoxy (C 1-6 ) ethyl, allyloxyethyl, phenoxyethyl, phenylalkyl (C 1-3 ), alkoxy (C 1-6 ) carbonylalkyl (C 1-3 ) or phenoxyethoxycarbonylalkyl (C 2-3 ) group and R 3 stands for a hydrogen atom or R 3 ', wherein R 3 ' stands for an alkyl (C 1-6 ), allyl, benzyl, chlorobenzyl, nitrobenzyl, phenethyl, alkoxy (C 1-6 ) carbonylalkyl (C 1-3 ), phenoxyethoxycarbonylalkyl (C 2-3 ) or cyanoalkyl (C 1-2 ) group, a process for producing a pyrroline derivative represented by the formula (I) and methods for dyeing a hydrophobic fiber and coloring a synthetic resin with the same.
Inventors
- 👤 Hiroyuki Matumoto
- 👤 Hidenori Imai
- 👤 Shozi Tada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:58
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/27; C09; C09B; C09B23/00; C09B23/0091
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
51 words
A pyrroline derivative represented by the formula: ##STR45## Wherein R 1 and R 2 each independently stand for an alkyl (C 2-6 ) or phenylalkyl (C 2-3 ) group and R 3 stands for a hydrogen atom, an alkyl (C 1-4 ), allyl, alkoxy (C 1-6 ) carbonylpropyl or benzyl group.
Claim 2
Dependent Claim
51 words
A pyrroline derivative represented by the formula: ##STR45## Wherein R 1 and R 2 each independently stand for an alkyl (C 2-6 ) or phenylalkyl (C 2-3 ) group and R 3 stands for a hydrogen atom, an alkyl (C 1-4 ), allyl, alkoxy (C 1-6 ) carbonylpropyl or benzyl group.
Claim 3
Dependent Claim
35 words
A pyrroline derivative, according to claim 1, wherein R 3 stands for an allyl group, R 1 and R 2 each independently stand for an alkyl (C 2-6 ), or phenylalkyl (C 2-3 ) group.
Claim 4
Dependent Claim
25 words
A pyrroline derivative, according to claim 2, wherein R 3 stands for an allyl group, R 1 and R 2 stand for a butyl group.
Claim 5
Dependent Claim
28 words
A pyrroline derivative, according to claim 2, wherein R 3 stands for an allyl group, R 1 stands for a butyl group and R 2 stands for ##STR46##
Claim 6
Dependent Claim
23 words
A pyrroline derivative, according to claim 2, wherein R 3 stands for an allyl group, R 1 and R 2 stand for ##STR47##
Claim 7
Dependent Claim
35 words
A pyrroline derivative, according to claim 1, wherein R 3 stands for a hydrogen atom, R 1 and R 2 each independently stand for an alkyl (C 2-4 ) or phenylalkyl (C 2-3 ) group.
Claim 8
Dependent Claim
28 words
A pyrroline derivative, according to claim 6, wherein R 3 stands for a hydrogen atom, R 1 stands for a butyl group and R 2 stands for ##STR48##
Claim 9
Dependent Claim
23 words
A pyrroline derivative, according to claim 6, wherein R 3 stands for a hydrogen atom, R 1 and R 2 stand for ##STR49##
References Cited (Backward Citations)
US3013013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |