EP0376078A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Dye composition for keratinous fiber
Assignee: Kao Corp
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Filing: 1989-12-14
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Granted: —
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Expires: 2009-12-14
Abstract
Abstract A dye composition for keratinous fibers comprising 2,6-diaminopyridine or its salt as a coupling substance and 2,4,5,6-tetraaminopyrimidine or its salt as a developer is disclosed. The dye composition is capable of dyeing keratinous fibers with a yellowish color having a high degree of vividness. In addition, the color produced possesses excellent light resistance, washing resistance, and wear resistance.
Inventors
- 👤 Jiro Kawase
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 16:31
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/4906; A61K8/4926; A61K8/494; A61K8/4953; A61Q; A61Q5/00; A61Q5/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
25 words
A dye composition for keratinous fibers comprising 2,6-diaminopyridine or a salt thereof as a coupling substance and 2,4,5,6-tetraaminopyrimidine or a salt thereof as a developer.
Claim 2
Dependent Claim
25 words
A dye composition for keratinous fibers comprising 2,6-diaminopyridine or a salt thereof as a coupling substance and 2,4,5,6-tetraaminopyrimidine or a salt thereof as a developer.
Claim 3
Dependent Claim
20 words
The dye composition for keratinous fibers according to Claim 1, further comprising other oxidizing dyes, direct dyes, or the both.
Claim 4
Dependent Claim
44 words
The dye composition for keratinous fibers according to Claims 1 or 2, comprising an oxidizing dye consisting of 2,6-diaminopyridine or a salt thereof and 2,4,5,6-tetraaminopyrimidine or a salt thereof; and 0.1 to 15% by weight of other oxidizing dyes, direct dyes, or the both.
References Cited (Backward Citations)
No citation records indexed.
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