Patent US4838894A successfully refreshed from Google Patents.
US4838894A
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Hair dye coupler and process for making
Assignee: P&G Hair Care Holding Inc
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Filing: 1987-12-21
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Granted: 1989-06-13
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Expires: 2007-12-21
Abstract
Abstract A substituted m-aminophenol coupler useful in hair dyeing having the formula ##STR1## and acid addition salts thereof wherein x and y are selected from the group consisting of halogen and the groups OR of which R is the same or different alkyl, aminoalkyl or hydroxyalkyl groups, at least one of x or y being a group OR and a process for preparing these compounds.
Inventors
- 👤 James E. Kijek
- 👤 Keith C. Brown
- 👤 Bryan P. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:51
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/415; A61Q; A61Q5/00; A61Q5/10; C; C07; C07C; C07C205/00; C07C205/27; C07C205/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
As a compound a meta aminophenol useful as a meta component in an oxidation dye composition having the formula ##STR15## wherein x and y are selected from the group consisting of halogen and the group OR of which R is alkyl, aminoalkyl or hydroxyalkyl, at least one of x or y being the group OR.
Claim 2
Dependent Claim
55 words
As a compound a meta aminophenol useful as a meta component in an oxidation dye composition having the formula ##STR15## wherein x and y are selected from the group consisting of halogen and the group OR of which R is alkyl, aminoalkyl or hydroxyalkyl, at least one of x or y being the group OR.
Claim 3
Dependent Claim
30 words
A compound according to claim 1 wherein R is a lower alkyl, lower aminoalkyl or lower hydroxyalkyl group having from 1 to 4 carbon atoms and the halogen is chlorine.
Claim 4
Dependent Claim
13 words
A compound according to claim 2 wherein R is methyl, aminoethyl or hydroxyethyl.
Claim 5
Dependent Claim
24 words
A compound according to claim 1 having the formula ##STR16## wherein R' is a divalent alkylene radical having from 1 to 4 carbon atoms.
Claim 6
Dependent Claim
21 words
A compound according to claim 1 having the formula ##STR17## wherein R" is a alkyl group 1 to 4 carbon atoms.
Claim 7
Dependent Claim
24 words
A compound according to claim 1 having the formula ##STR18## wherein R' is a divalent alkylene radical having from 1 to 4 carbon atoms.
Claim 8
Dependent Claim
93 words
An oxidation dye composition containing a para component selected from the group consisting of p-toluene diamine, p-aminophenol, p-aminodiphenylamine, 4,4'-diaminodiphenylamine, 2,6-dimethyl-p-pheylenediamine, 2,5-diaminopyridine, as well as from the class of compounds of the formula ##STR19## or its non-toxic salts, in which: R 1 is hydrogen, alkyl or hydroxyalkyl; R 2 is hydrogen or hydroalkyl; R 3 is hydrogen, alkyl, alkoxy or halogen; and R 4 occupies any one of the remaining positions on the benzene radical and is hydrogen, alkyl, alkoxy or halogen and as a meta component a compound of claims 1,2,3,4,5 or 6.
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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |