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Volume 14 (1980)
- Issue 2 Pages 105-
- Issue 1 Pages 5-
Volume 14, Issue 1
Displaying 1-9 of 9 articles from this issue
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Kiro Shimamoto, Hiromichi Takashima1980 Volume 14 Issue 1 Pages 5-12
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSDownload PDF (1282K) -
Yutaka Ohtsu, Shigeki Ohnishi, Hisashi Yazaki, Tokuko Ishiwata, Shizuo ...1980 Volume 14 Issue 1 Pages 13-19
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSA gas chromatographic analysis of α-naphthylamine (α-NH2), β-naphthylamine (β-NH2), α-naphthol and β-naphthol in cosmetic coal-tar colors has previously been described, in which the detection limit was reported to be 2ppm (Bulletin of National Institute of Hygienic Sciences, 89, 112, 1971)
Although it is desirable to develop the analytical method with a higher sensitivity judging from a recent public concern over the safety, Japan's Cabinet Order for the enforcement of the Labor Safety and Sanitation Law designated β-NH2 as a material not to be manufactured or processed and in addition, it is very likely in the future that the use of β-NH2 even as an experimental reagent will hardly be approved legally.
Thus, the separation of α- and β-NH2, the determination of the eluting position of β-NH2 by α-NH2, the relative sensitivity of β-NH2 to α-NH2, the calibration curve and detection limit were studied by using high speed liquid chromatograph (with fluorescence monitor) together with the clean-up procedure and the method was established for determining β-NH2 in cosmetic coal-tar colors with the detection limit of 5ppb by using α-NH2 as an alternate standard.View full abstractDownload PDF (901K) -
Hisao Horikawa, Shoji Yuasa1980 Volume 14 Issue 1 Pages 26-32
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSThe purpose of this study was to thermally characterize the skin surface condition and quantitatively evaluate the effect of cosmetic preparations and beauty treatments by IR Thermography instrument. For this purpose, we measured the temperature distribution of the facial skin of 18 women and analyzed the distribution, mean and real temperature using Data Processor.
It was found that the mean temperature of facial skin decreased with aging and the real temperature of forehead was higher than that of cheeks.
Moreover, we suggested that this Thermography method was possible to evaluate the effect of beauty treatment.View full abstractDownload PDF (7697K) -
Koji Yamato, Haruo Ito1980 Volume 14 Issue 1 Pages 33-40
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSExperiments of tapping compaction of Cosmetic powders showed good agreement with Taneya's equation. However, this result does not always explain our usual experience in compressibility molding, as the behaviors of fine powders are so complicated.
Caking effect of metal soaps for powders decreased in order of metal-ion radius.
As compared several oils for their binding effect, oils with weaker poarity in chem ical constitution showed more strong effect.View full abstractDownload PDF (6472K) -
M. Nagai, H. Sagitani, M. Takenouchi1980 Volume 14 Issue 1 Pages 41-47
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSPhase diagrams have been determined as a function of temperature for the followihg systems; water-dodecane-surfactants (nonionic surfactant: anionic surfactant=80:20-95:5), water-surfactants (nonionic surfantant: anionic surfactant=90:10).
By the effects of anionic surfactant, Phase Inversion Temperature (PIT) rised in these systems, and anisotropic liquid crystalline phase regions expanded as a function of temperature.
Consequently, the translucent emulsion region and gel region were formed in O/W emulsion region.
In order to understand the specific characteristic of the meso phase, polarizing microscopic patterns, viscosity, differential scanning calorimetery curves and small angle X-ray diffraction patterns were measured.
These are important for the cosmetic chemists who are charged with developing a stable product.View full abstractDownload PDF (4779K) -
Makoto Mochizuka, Haruyuki Inoue, Masao Shaku, Ichiro Koiso, Susumu No ...1980 Volume 14 Issue 1 Pages 48-56
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSThe purpose of this study was to examine the consumer's own classification of skin type in terms “oily skin” or “dry skin” and to compare it with the data obtained by instrumental measurments of subject's skin characteristics.
For this purpose. we measured the sebumquantity, surface topography, skin pH, transepidermal water loss and buffering capacity of the forehead skin of 500 females using various instrumental methods. Questionaires were given to the subjects to survey their own classification of the skin type.
The results of this survey, as the objectively mesured data, were statistiically analyzed.
It was found that there was a definite relationship between the skin type, sebum quantity and skin roughness.View full abstractDownload PDF (985K) -
Tetsuo Inoue, Masahiro Iwaida1980 Volume 14 Issue 1 Pages 57-61
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSLichens are a group of plants composed of fungus and alga, which occupy a peculiar position. Their metabolic products are so different from those of higher plants that they constitute a peculiar group in the world of organic chemistry. Of these usnic acid is the most widely distributed, being responsible for the antimicrobial activity of lichen.
In the earlier stages of investigation, the remarkable antitubercular activity of usnic acid was noted. Of late, its application has been expanded as an antiseptic into a variety of pharmaceutical preparations and cosmetics which has become important due to its wide antimicrobial spectra on gram-positive bacteria. It shows an antibacterial activity on Staphylococcus in a dilution of 320, 000. Since hexachlorophene has been restricted because of accidents which occurred in 1972 in France, the use of usnic acid in ointments and powders has become especially promising, being added at a level of about 0.36% proving sufficient.
Ehrlich's reagent has been widely known for its characteristic colour reaction with usnic acid. The reaction was adaptd to a quantification test by Jayasankar and Towers, Recently, both gas-liquid and high-performance liquid chromatographic methods have been developed for its specific determination.View full abstractDownload PDF (617K) -
Teruo Horiuchi, Ichiro Kashiwa, Yuriko Heki, Kousaku Ohno1980 Volume 14 Issue 1 Pages 62-65
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSA new apparatus which can be measured the friction coefficient as a function of time has been developed
As the exapmies of applications, the relationship between the friction coefficient of human hair treated with oil ingredients or hair care products and the combability by sensory test was shown.View full abstractDownload PDF (1772K) -
Fusayoshi Masuda, Kenji Tanaka1980 Volume 14 Issue 1 Pages 66-71
Published: April 25, 1980
Released on J-STAGE: August 06, 2010
JOURNAL FREE ACCESSChemical structure and some properties of a super absorbent consisted of crosslinked starch-grafted-polyacrylic acid and its sodium salt were studied. From the results of studies on the chemical structure, we disclosed that acrylic acid and its sodium salt are graff-polymerized on starch by ratio of 2 molecules to one glucosic unit of starch, and the grafted polyacrylic acid and sodium salt are slightly crosslinked. At the same time of the graft-polymerization, the interaction by hydrogen-bond between carboxylic acid and hydroxy group is formed. The super absorbent has the absorbing capacity of about 400ml/g in water and retains about 80% of the absorbnd water even under pressure of 2kg/cm2. Although the super absorbent swells and becomes gel-like in water, it changes to a homogeneous solution and viscosity of it is reduced, wheh it is given mechanical shear. The homogeneous solution thus obtained gives a clear and highly hygroscopic film by casting and drying.View full abstractDownload PDF (649K)
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