Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Reexamination Certificate
1999-06-11
2001-05-15
Krynski, William (Department: 1774)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
C510S180000, C510S181000, C510S191000, C510S188000, C510S195000, C510S238000, C510S243000, C510S245000, C510S505000, C510S506000, C510S509000, C510S527000
Reexamination Certificate
active
06232283
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a liquid detergent composition having excellent detergency towards oil smears and soap scums and hardly damaging base materials, which is particularly suitable as a detergent for use in kitchens, bathrooms, and toilets and as a detergent for living smears.
PRIOR ART
To remove smears which are different depending on treated subjects such as bathrooms, kitchens, floors etc., detergents generally having compositions adapted to each of the smears have been used. Besides detergency, there is further demand for not causing damage to base materials as subjects to be cleaned. For example, if base materials such as styrene-based resin e.g. ABS resin recently used widely as a material for various structures, or base materials using the styrene-based resin in combination with other materials such as metal, glass etc., are cleaned, they may be damaged depending on a solvent to be added to the detergent.
The object of the present invention is to provide a liquid detergent composition not damaging various base materials, particularly plastic base materials represented by the styrene-based resin and simultaneously being capable of demonstrate high detergency towards various smears, particularly denatured-oil smears and soap scums.
The present inventors have previously proposed a detergent composition for hard surfaces comprising a specific range of glyceryl-ether solvents incorporated therein as a detergent applicable to a wide variety of uses in order to solve the cumbersome selection of detergents for each use (JP-A 7-3289).
DISCLOSURE OF INVENTION
To cope with diversification of materials, the present inventors made extensive studies based on the detergent composition disclosed in JP-A 7-3289, and as a result, the present inventors have found that a composition obtained by incorporation of a specific combination of glyceryl-ethers in place of the glyceryl-ethers used in the prior art composition can have improved detergency without damaging base materials, and the present invention has thereby been completed.
That is, the present invention provides a liquid detergent composition comprising:
(a) 0.1 to 50% by weight of a mixture of at least two different compounds from each other in view of their structural isomers and/or the number of carbon atoms included therein, selected from glycery-ether compounds having the formula (I):
R—OCH
2
CH(OH)CH
2
OH (I)
wherein R is an alkyl or alkenyl group having 1 to 11 carbon atoms,
(b) 0.01 to 30% by weight of a surfactant,
(c) 0.01 to 30% by weight of a builder or an alkali agent and
(d) the balance of water.
MODE FOR CARRYING OUT THE INVENTIONS
The glyceryl-ether mixture as component (a) used in the present invention is at least one mixture which satisfies the condition represented by (i) or (ii):
(i) a mixture of glyceryl-ethers represented by formula (I), and wherein the glyceryl-ethers having a alkyl or alkenyl group (i.e. R) having different carbon-atoms-number from each other;
(ii) structural isomers represented by the formula (I). In particular, the mixture of glyceryl-ethers is preferably a mixture of 2 or more.
The mixed ratio of glyceryl-ethers is preferable in the range from 1:9 to 9:1, especially preferable in the range from 2:8 to 8:2 and more preferable in the range from 3:7 to 7:3.
As the condition (i), Rs to be mixed are different from each other, and then R is preferable to be an alkyl group having 3 to 8 carbon atoms, and especially preferable to be having 4 to 6 carbon atoms. As the condition (ii), Rs are different from each other, since Rs are structural isomers each other. Among them, Rs to be mixed is preferable to combine a liner alkyl group, a methyl branched-alkyl group and/or an ethyl-branched group, especially preferable to combine two or more selected from these members, and particularly preferable to combine a liner alkyl group with a methyl-branched alkyl group or a liner alkyl group with an ethyl-branched alkyl group. As the condition (iii), it is preferable to combine glyceryl-ethers of (i) and (ii).
The best combination is a glyceryl-ether having 4 to 6 carbon atoms or a mixture thereof satisfying the condition (ii).
The glyceryl-ether as component (a) can be obtained for example by adding 1-chloro-2,3-epoxypropane to an alcohol corresponding to R in the presence of a Lewis acid catalyst, then ring-opening the product under alkaline conditions, and ring-opening the epoxy ring by hydrolysis.
To give sufficient detergency and to improve stability in an aqueous system, the content of the component (a) in the liquid detergent composition is in the range of 0.1 to 50% by weight, preferably 0.5 to 30% by weight, more preferably 1 to 20% by weight.
The surfactant as component (b) used in the present invention includes anionic surfactants, nonionic surfactants, amphoteric surfactants and cationic surfactants.
The anionic surfactants used may be those described in JP-A 9-310091, page 8, column 13, line 41 to page 9, column 15, line 49, among which preferably used are a straight-chain alkyl benzene sulfonic acid with a C
8
to C
22
alkyl chain, polyoxyethylene alkyl ether sulfuric acid to which 1 to 10 moles of ethylene oxide on average have been added, a polyoxyethylene alkyl ether carboxylic acid to which 1 to 10 moles of ethylene oxide on average have been added, and a polyoxyethylene alkyl amide ether carboxylic acid to which 1 to 10 moles of ethylene oxide on average have been added, as well as salts thereof with potassium, sodium, magnesium and alkanol amine.
The nonionic surfactants used may be those described in JP-A 9-310091, page 6, column 10, line 35 to page 8, column 13, line 40, among which preferably used are a polyoxyethylene alkyl ether having a C
8
to C
22
alkyl chain to which 1 to 30 moles of ethylene oxide on average have been added, a polyoxyethylene oxypropylene alkyl ether to which 1 to 30 moles in average of ethylene oxide and 1 to 10 moles on average of propylene oxide have been added, a fatty acid alkanol amide with 8 to 22 carbon atoms on average or a derivative thereof to which 1 to 3 ethylene oxide (or propylene oxide) molecules on average have been added, an alkyl amine oxide with a long-chain C
8
to C
22
alkyl group which may have an amide linkage therein, and an alkyl polyglycoside with a C
8
to C
22
alkyl chain whose sugar has an average condensation degree of 1.0 to 2.0.
The amphoteric surfactants used may be those described in JP-A 9-310091, page 6, column 9, line 1 to column 10, line 34, among which mention can be made of alkanoyl amide propyl-N,N-dimethyl glycine betaine, alkanoyl amide propyl-N,N-dimethyl-2-hydroxypropyl sulfobetaine, alkyl-N,N-dimethyl glycine betaine, alkanoyl amide propyl-N,N-dimethyl-propyl sulfobetaine, lauryl-N,N-dimethyl-2-hydroxypropyl sulfobetaine etc. Among these, lauroyl amide propyl-N,N-dimethyl glycine betaine, myristoyl amide propyl-N,N-dimethyl glycine betaine, cocamide propyl-N,N-dimethyl glycine betaine, lauryl-N,N-dimethyl-2-hydroxypropyl sulfobetaine, lauroyl amide propyl-N,N-dimethyl-2-hydroxypropyl betaine etc. are preferable in respect of detergency and foaming ability.
The cationic surfactants used may be cationic surfactants described in JP-A 9-310091, page 3, column 4, line 11 to page 5, column 8, line 50, and particularly preferably used in the case of quaternary salts are C
6
to C
24
long-chain di-alkyl dimethyl ammonium salts, long-chain mono-alkyl monobenzyl dimethyl ammonium salts and long-chain mono-alkyl trimethyl ammonium salts, all of which may have amide or ester linkages therein, and the counter ions are preferably halogen atoms such as chlorine and bromine atoms, sulfates, and alkyl group-containing sulfate residues such as methyl- and ethyl-sulfuric acid. Cationic surfactants of amine type include long-chain di-alkyl monomethyl amine salts with a long-chain C
8
to C
24
alkyl group which may have an amide or ester linkage therein, preferably in the form of hydrochlorides, sulfates or phosphates.
In the present invention, the cationic surfactant can be incorporated to further impr
Inoue Takumi
Morii Noriyuki
Tsukuda Kazunori
Uno Mitsuru
Garrett Dawn L.
Kao Corporation
Krynski William
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
LandOfFree
Liquid detergent composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid detergent composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid detergent composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2532432