Compositions – Dust suppressants for bulk materials – or processes of...
Patent
1997-09-11
1998-12-29
Acquah, Samuel A.
Compositions
Dust suppressants for bulk materials, or processes of...
528271, 528354, 528361, 528363, 528366, 528370, 525423, 525426, 525435, 525540, 252117, 25217421, 25217423, 252DIG2, 424 7808, 424 7837, 424 7001, 424 7011, C11D 930, C08F28304
Patent
active
058536116
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a novel polyether polymer, and particularly to a polyether polymer having carbobetaine groups on its side chains, a preparation process thereof, its use for a moisturizer, and a cosmetic composition and a detergent composition comprising the polymer.
BACKGROUND ART
Various kinds of moisturizers have heretofore been incorporated in many cosmetic and detergent compositions for the purpose of imparting a moisturized feeling to the user's hair and skin. Low-molecular weight compounds such as glycerol, propylene glycol, sorbitol, urea and adducts of alkylene oxide with saccharides have been used as such moisturizers.
However, none of these moisturizers have been satisfactory from the viewpoint of moisture retention, a feeling upon use, etc., and involved a problem that they are easily diffused and washed away by sweat and/or water, and so their effects do not last long. In addition, when they are used in cosmetic compositions which are washed off after their use, such as rinses and body rinses, or in detergent compositions containing a great amount of a surfactant, they are almost washed off, and so their inherent effects cannot be fully exhibited in many cases.
High-molecular weight moisturizers such as collagen, hyaluronic acid and cationized cellulose have also been known. However, these moisturizers are not fully satisfactory from the viewpoint of a feeling upon use because they give a sticky feeling to the user's hair and skin or they give less moisturized feeling.
On the other hand, a moisturizer of the carboxybetaine type is disclosed in EP-A-0649834. However, such a compound has also been diffused and washed away by sweat and/or water like the moisturizers of the low-molecular weight compounds, and so the lastingness of its moisturizing effect has not been sufficient.
There has thus been a demand for development of a moisturizer which has excellent moisture retention, gives users a pleasant feeling and keeps up its moisturizing effect over a long period of time without being washed away by sweat and/or water or even after washing off it.
DISCLOSURE OF THE INVENTION
In view of the foregoing circumstances, the present inventors have carried out an extensive investigation. As a result, it has been found that when the side chains, or chloromethyl groups, of polyepichlorohydrin are reacted with an amine, and then with a .omega.-halocarboxylic acid (salt) or a cyclic lactone, a polyether polymer having carbobetaine groups on its side chains is obtained, and this polymer not only has excellent moisture retention, but also keeps up its moisturizing effect over a long period of time and gives users a pleasant feeling when incorporated for use in various cosmetic and detergent compositions, thus leading to completion of the present invention.
It is therefore an object of the present invention to provide a new polyether polymer and a process for its preparation.
A further object is to provide a new moisturizer having advantageous properties.
A still further object is to provide a cosmetic composition.
A still further object is to provide a detergent composition.
According to the present invention, there is thus provided a polyether polymer having structural units represented by the following general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 mean individually an alkyl group of 1-20 carbon atoms, which may have one or more hydroxyl groups, and Y denotes an alkylene group of 1-10 carbon atoms, which may have a hydroxyl group.
According to the present invention, there is also provided a process for preparing a polyether polymer having structural units represented by the general formula (1): ##STR2## wherein R.sup.1 and R.sup.2 mean individually an alkyl group of 1-20 carbon atoms, which may have one or more hydroxyl groups, and Y denotes an alkylene group of 1-10 carbon atoms, which may have a hydroxyl group, which comprises reacting a polymer having structural units represented by the general formula (2): ##STR3## wherein R.sup.1 and R.sup.2 have the sam
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Hanazawa Hideyuki
Kajihara Yasushi
Kawamukai Hiroshi
Moriyama Masaaki
Oda Takashi
Acquah Samuel A.
Kao Corporation
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