Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2002-08-08
2003-09-23
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S130000, C510S138000, C510S155000, C510S156000, C510S235000, C510S237000, C510S356000, C510S382000, C510S384000, C510S388000
Reexamination Certificate
active
06624126
ABSTRACT:
TECHNICAL FIELD
The present invention relates to detergent compositions excellent in detergency and quick foaming properties, exhibiting a high antibacterial activity, and producing satisfactory antipruritic and deodorant effects on the scalp or the body and anti-dandruff effects on the scalp.
BACKGROUND ART
Hair or body detergent compositions tend to contain an anionic surfactant as a main base in order to impart them with excellent detergency, foaming power and quick foaming properties. Such detergent compositions are required to have, in addition to cleansing effects, bactericidal or antibacterial effects. Detergent compositions containing an antibacterial agent, such as triclosan, piroctone olamine or a cationic surfactant are known as those for preventing dandruff or itching.
Use of an anionic surfactant and an antibacterial agent in combination however causes such problems as deterioration in detergency or quick foaming properties and insufficient exhibition of antibacterial effects.
An object of the present invention is to provide detergent compositions excellent in detergency and quick foaming properties and bringing about high antibacterial effects.
DISCLOSURE OF THE INVENTION
The present inventors have found that detergent compositions excellent in detergency and quick foaming properties, bringing about high antibacterial effects and exhibiting sufficient antipruritic, deodorant and antidandruff effects are available by using a specific glyceryl ether in combination with an anionic surfactant and an antibacterial agent.
The present invention provides a detergent composition comprising the following components (A), (B) and (C):
(A) an anionic surfactant,
(B) an antibacterial agent, and
(C) a glyceryl ether having a C
4-12
alkyl or alkenyl group.
BEST MODE FOR CARRYING OUT THE INVENTION
The anionic surfactants serving as Component (A) in the present invention are preferably those of sulfate, sulfonate and carboxylate types. Examples include alkyl sulfates, polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, alkyl sulfosuccinates, polyoxyalkylene alkyl sulfosuccinates, alkylbenzene sulfonates, &agr;-olefin sulfonates, polyoxyalkylene alkylphenyl ether sulfates, glyceride sulfates, amide ether sulfates, higher fatty acid salts, alkane sulfonates and &agr;-sulfo fatty acid ester salts.
Of these anionic surfactants, alkyl sulfates, polyoxyalkylene alkyl ether sulfates and polyoxyalkylene alkenyl ether sulfates are preferred, with alkyl sulfates represented by the below-described formula (5), and polyoxyalkylene alkyl ether sulfates and polyoxyalkylene alkenyl ether sulfates represented by the below-described formula (6) being more preferred.
R
7
OSO
3
M (5)
R
8
O(CH
2
CH
2
O)
m
SO
3
M (6)
wherein, R
7
represents a C
10-18
alkyl group, R
8
represents a C
10-18
alkyl or alkenyl group, M represents an alkali metal, alkaline earth metal, ammonium, an alkanolamine or a basic amino acid, and m stands for 1 to 5 on the weight average.
As Component (A), at least one anionic surfactant can be used. In order to impart the detergent composition with excellent detergency and foaming performance, it is preferably incorporated in an amount of 5 to 50 wt. %, especially 8 to 30 wt. %, more preferably 10 to 22 wt. % in the whole composition.
Examples of the antibacterial agent as Component (B) to be used in the invention include triclosan, triclocarban, piroctone olamine, zinc pyrithione, selenium disulfide and 3-methyl-4-(1-methylethyl)phenol, and antibacterial agents as described in “Science of Antiseptics·Bactericides of Cosmetics and Pharmaceuticals” (ed. by John. J. Kavala, published by Fragrance Journal), of which triclosan, triclocarban, piroctone olamine and zinc pyrithione are especially preferred.
Examples of the cationic surfactants as Component (B) include quaternary ammonium salts represented by the below-described formula (1), benzalkonium salts or benzethonium salts represented by the formula (2), chlorhexidine salts represented by the formula (3) and pyridinium salts represented by the formula (4).
wherein, R
1
and R
2
are the same or different and represent long-chain alkyl, long-chain alkenyl or long-chain hydroxyalkyl groups each having 6 to 14 carbon atoms and totally having 16 to 26 atoms, R
3
and R
4
are the same or different and represent a C
1-3
alkyl group or hydroxyalkyl group or a polyoxyethylene group having an average addition mole of 10 or less, Z represents a halogen atom, an anionic residue of an amino acid, a fatty acid or a phosphate ester, phosphonate ester, sulfonate ester or sulfate ester having a linear or branched C
1-30
alkyl or alkenyl group, or an anionic oligomer or polymer containing a formalin condensate of a sulfonated polycyclic aromatic compound which may have a styrenesulfonic acid having a polymerization degree of 3 or greater or may have a hydrocarbon group as a substituent.
wherein, R
5
represents a C
8-14
hydrocarbon group or a group represented by the following formula:
and Z has the same meaning as described above.
wherein, Z′ represents gluconic acid, acetic acid or hydrochloric acid.
wherein, R
6
represents a linear or branched C
6-18
alkyl group and Z has the same meaning as described above.
In the formula (1), C
8-12
alkyl groups are preferred as each of R
1
and R
2
, whereas C
1-3
alkyl groups are preferred as each of R
3
and R
4
. In the formula (2), C
8-14
hydrocarbon groups are preferred as R
5
. In the formula (4), C
8-16
alkyl groups are preferred as R
6
.
In the formulas (1), (2) an (4), halogen atoms are particularly preferred as Z.
Specific preferred examples of the cationic surfactant include benzalkonium chloride, benzethonium chloride, cetylpyridinium chloride, chlorhexidine gluconate, chlorhexidine acetate and chlorhexidine hydrochloride, with those represented by the formula (2) such as benzalkonium chloride and benzethonium chloride being especially preferred.
As Component (B), use of an antibacterial cationic surfactant in combination with another antibacterial agent brings about higher effects. Component (B) is preferably incorporated in an amount of 0.005 to 5 wt. %, especially 0.1 to 4 wt. %, more preferably 0.4 to 3 wt. % in the whole composition. Within the above-described range, sufficient antibacterial effects are attained.
The glyceryl ether as Component (C) has a linear or branched C
4-12
alkyl or alkenyl group. Preferred are glyceryl ethers having a C
4-12
alkyl group such as n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, n-hexyl, isohexyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, n-decyl or n-lauryl. Of these, glyceryl ethers having a C
4-11
alkyl group, especially a C
6-10
alkyl group, more preferably a C
8
alkyl group are preferred, with the number of the alkyl groups being preferably 1 or 2, especially 1.
One or more of these glyceryl ethers can be used as Component (C). Incorporation of the glyceryl ether in an amount of 0.1 to 30 wt. %, especially 0.5 to 15 wt. %, more preferably 1 to 10 wt. % in the whole composition is preferred in order to impart the resulting detergent composition with excellent foaming performance.
In the detergent composition of the present invention, a metal chelating agent can be incorporated further to heighten its antibacterial effects. No particular limitation is imposed on the metal chelating agent insofar as it has a capacity of chelating metal ions. Examples include amono-polycarboxylic acid chelating agents, aromatic or aliphatic carboxylic acid chelating agents, amino acid chelating agents, ether polycarboxylic acid chelating agents, phosphonic acid chelating agents, hydroxycarboxylic acid chelating agents, phosphoric acid chelating agents, high-molecular electrolyte (including oligomer electrolyte) chelating agents and dimethyl glyoxime (DG). These chelating agents may be either in the form of a free acid or salt such as sodium salt, potassium salt or ammonium salt. Alternatively, they may be their hydrolyzable ester derivatives.
Specific examples of the amino-polycarboxylic a
Kasuga Kennichi
Miyajima Tetsuya
Boyer Charles
Kao Corporation
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