EXTERNAL PREPARATION FOR SKIN

PROBLEM TO BE SOLVED: To provide an external preparation for skin which does not separate a tranexamic acid crystal in an external preparation compounding tranexamic acid. SOLUTION: A long-chain acylsulfonate anionic surfactant of 0.01-5 mass% represented by general formula (1): R1CO-a-(CH2)nSO3M1su...

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Bibliographic Details
Main Authors KOGA NOBUYOSHI, TAMADA JUNKO, SUZUKI DAISUKE
Format Patent
LanguageEnglish
Published 28.04.2011
Subjects
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SPECIFIC USE OF COSMETICS OR SIMILAR TOILETPREPARATIONS
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Summary:PROBLEM TO BE SOLVED: To provide an external preparation for skin which does not separate a tranexamic acid crystal in an external preparation compounding tranexamic acid. SOLUTION: A long-chain acylsulfonate anionic surfactant of 0.01-5 mass% represented by general formula (1): R1CO-a-(CH2)nSO3M1such as (A) a higher alcohol and (B) a stearoyl methyl taurate, and (C) tranexamic acid of 0.1-5 mass% are compounded and a pH is adjusted to be 3.0-6.0. [In the formula, R1CO- is a saturated or unsaturated fatty acid residue having an average of 10-22 carbon atoms; a is -O- or -NR2- (R2is a hydrogen atom or an alkyl group having 1-3 carbon atoms); M1is a hydrogen atom, alkali metals, alkaline earth metals, ammonium or organic amines; n is an integer from 1 to 3]. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20100159364