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EP1314418A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Hairdye composition including 1-phenyl-3-methyl-5-pyrazolone and method for obtaining the same

Assignee: Dong Sung Pharmaceuticals Co Ltd
•
Filing: 2002-04-23
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Granted: —
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Expires: 2022-04-23
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Abstract

Abstract A hairdye composition is disclosed, in which hair is normally dyed and at the same time the hairdye is maintained in a transparent state for a certain time period. A method for obtaining a hairdye composition containing phenylmethyl pyrazolone includes the steps of: dissolving fatty alcohol of 2∼25wt% based on total weight, surfactant of 0.5∼35wt% based on total weight, and phenylmethyl pyrazolone of 0.1∼30wt% based on total weight, at 70∼90°C; mixing the dissolved product with a dye of 0.1∼10wt% and purified water of 30∼55wt% based on total weight; cooling the mixture at 50∼60°C; and mixing an alkalizer of 2∼10wt% based on total weight with the resultant product.

Inventors

  • 👤 Bong Lim Jo
  • 👤 Hyun Jin Jo

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-06 14:52
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/49; A61K8/19; A61K8/22; A61K8/33; A61K8/34; A61K8/347; A61K8/40; A61K8/41; A61K8/411; A61K8/415; A61K8/46; A61K8/463; A61K8/494; A61Q; A61Q5/00; A61Q5/10; A61K2800/00; A61K2800/80; A61K2800/88

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 30 words
A hairdye composition comprising a first composition containing an oxidation dye and an alkalizer and a second composition containing oxygenated water, wherein the first composition includes phenylmethyl pyrazolone of 0.1∼30wt%.
Claim 2
Dependent Claim 28 words
The hairdye composition as claimed in claim 1, wherein the first composition further includes at least one group selected from fatty alcohol, surfactant, fatty acid, and purified water.
Claim 3
Dependent Claim 83 words
The hairdye composition as claimed in claim 2, wherein the oxidation dye includes at least one group selected from P-phenylenediamine, P-aminophenol, O-aminophenol, resorcinol, and toluene-2, 5-diamine sulfate, the alkalizer includes at least one group selected from strong ammonia water and monoethanolamine, the fatty alcohol includes at least one group selected from cetyl alcohol, stearyl alcohol, and behenyl alcohol, the surfactant includes at least one group selected from polyoxyethylene cetyl ether and polyoxyethylene lauryl ether sodium sulfate, and the fatty acid includes oleic acid.
Claim 4
Dependent Claim 48 words
The hairdye composition as claimed in claim 2, wherein the first composition is obtained at a weight ratio of the oxidation dye of 0.1∼10wt%, the alkalizer of 2∼10wt%, the fatty alcohol of 2∼25wt%, the surfactant of 0.5∼35wt%, the fatty acid of 0.5∼20wt%, and the purified water of 30∼55wt%.
Claim 5
Independent Claim 78 words
A method for obtaining a hairdye composition containing phenylmethyl pyrazolone includes the steps of: dissolving fatty alcohol of 2∼25wt% based on total weight, surfactant of 0.5∼35wt% based on total weight, and phenylmethyl pyrazolone of 0.1∼30wt% based on total weight, at 70∼90°C; mixing the dissolved product with a dye of 0.1∼10wt% and purified water of 30∼55wt% based on total weight; cooling the mixture at 50∼60°C; and mixing an alkalizer of 2∼10wt% based on total weight with the resultant product.

References Cited (Backward Citations)

US3413072A Cited
DE2359399A1 Cited
US4566875A Cited
EP0951900A2 Cited
WO2002069918A1 Cited

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