摘要:
It is an object of the invention to provide a polymersome excellent in the safety and feeling in use; in particular, there is no sticky feeling but there is a good refreshing feeling; and with excellent base-agent stability. A polymersome of the present invention comprises a block-type alkylene oxide derivative represented by the following formula (I) as the membrane component: R1O-[(EO)I(AO)m(EO)n]-R2 (I) wherein AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, m and 1+n are the average addition mole numbers for the oxyalkylene group and the oxyethylene group, respectively, and 1≦m≦70, 1≦1+n≦70; the percentage of the oxyethylene groups with respect to the sum of the oxyalkylene groups having 3 to 4 carbon atoms and the oxyethylene groups is 20 to 80 mass %; the addition pattern of the oxyalkylene groups having 3 to 4 carbon atoms and the oxyethylene groups is block-type; and R1 and R2 are identical or different hydrocarbon groups having 1 to 4 carbon atoms.
摘要:
A first step of measuring a change over time in the spectral transmission spectrum of a measurement sample by its exposure to the light of a light source including an ultraviolet radiation for a preset light exposure time, a second step of performing a correction according to the change over time in the spectral transmission spectrum of the measurement sample based on the result of the measurement obtained by the first step, and a third step of calculating the final in vitro predicted SPF of the measurement sample using the result of the correction obtained by the second step are included.
摘要:
A skin treatment composition of the present invention is an external composition for skin comprising an alkylene oxide derivative expressed by Formula (I): R1O-[(AO)m(EO)n]—R2 (I) wherein AO is an oxyalkylene group of C3 or C4; EO is an oxyethylene group; m and n are 1≦m≦70 and 1≦n≦70 respectively, wherein EO is 20˜80% by weight with respect to a total of AO and EO; each of R1 and R2 is a hydrogen or a hydrocarbon group having C1-4. The alkylene oxide derivative (I) has a moisturizing effect, a rough skin improving effect, a stickiness improving effect, and a transdermal absorption promoting effect. When a refreshing agent is used together therewith in the composition of the present invention, the refreshing effect lasts for a long time and it is excellent in feeling of use without skin stimulation.
摘要:
The emulsified external skin preparation of the present invention is characterized by comprising a polyglycerol derivative represented by formula (1): wherein, m+2 represents the average polymerization degree of polyglycerol and 1≦m≦4; R1 is a hydrocarbon group having 1 to 4 carbon atoms or a hydrogen atom; AO is an oxyalkylene group having 3 to 4 carbon atoms; and n is the average addition mole number of the oxyalkylene group and 1≦m n≦200. In a water-in-oil type external skin preparation, and especially in that containing a polar oil or a silicone oil, emulsion stability is improved. In an oil-in-water type external skin preparation, feeling in use and emulsion stability are improved. Especially, in an oil-in-water type external skin preparation containing hydrophobized powder, powder dispersion stability is improved as well as feeling in use and emulsion stability.
摘要:
A skin treatment composition of the present invention is an external composition for skin comprising an alkylene oxide derivative expressed by Formula (I): R1O-[(AO)m(EO)n]—R2 (I) wherein AO is an oxyalkylene group of C3 or C4; EO is an oxyethylene group; m and n are 1≦m≦70 and 1≦n≦70 respectively, wherein EO is 20-80% by weight with respect to a total of AO and EU; each of R1 and R2 is a hydrogen or a hydrocarbon group having C1-4. The alkylene oxide derivative (I) has a moisturizing effect, a rough skin improving effect, a stickiness improving effect, and a transdermal absorption promoting effect. When a refreshing agent is used together therewith in the composition of the present invention, the refreshing effect lasts for a long time and it is excellent in feeling of use without skin stimulation.
摘要:
The present invention is to provide a new compound having a rough skin improving effect, excellent in safety, excellent in texture in use, especially free of sticky feeling, excellent in refreshing feeling, and capable to improve the base agent stability as a component. An alkylene oxide derivative is characterized by being represented by the below-described general formula (I): (formula I) Z-{O-[(AO)a-(EO)b]-R}2 (I) (In the formula, Z is the residue obtained by removing hydroxyl groups from the dimer diol, EO is an oxyethylene group, AO is an oxyalkylene group having 3 to 4 carbon atoms, and the addition form is block-type. The symbols a and b are the average addition mole numbers of the above-described oxyalkylene group and the oxyethylene group, respectively, and they are 1≦2 a≦150 and 1≦2 b≦150. The percentage of the oxyethylene groups with respect to the sum of the oxyalkylene groups having 3 to 4 carbon atoms and the oxyethylene groups is 10 to 99 mass %. Rs may be either identical to or different from each other, and they are hydrocarbon groups having 1 to 4 carbon atoms.)
摘要:
A skin treatment composition that characteristically contains alkylene polyglycol dineopentanoate having a specific structure.The object is to provide a skin treatment composition that gives a refreshing sensation at the time of application and contains an oil component that is highly safe with low skin irritation.The skin treatment composition specifically contains diethyleneglycol dineopentanoate, triethyleneglycol dineopentanoate, tetraethyleneglycol dineopentanoate, dipropyleneglycol dineopentanoate, tripropyleneglycol dineopentanoate, etc.Dipropyleneglycol dineopentanoate and tripropyleneglycol dineopentanoate are particularly preferable in terms of the sensation at the time of application; they provide a skin treatment composition that is particularly superior in absorption into the skin and a sensation of permeation and highly safe.
摘要:
Cleansing agents are provided which are highly effective for removing makeup with excellent lathering, while at the same time providing a refreshing after-shampoo feeling. These cleansing agents comprise surfactants and polyoxyalkylene carboxylic acid esters represented by the following formula (1): wherein R1 and R2 are hydrogen or straight or branched chain alkyl groups having 1 to 4 carbon atoms; m, n, X and Y are integers of from 0 to 5 but are not all concurrently 0; and R3 is a straight or branched chain alkylene group having from 0 to 10 carbon atoms.
摘要:
An error voltage which includes serious fluctuation due to noise is applied to a LPF, and high frequency component due to noise is removed. The error voltage supplied through the LPF and a reference level, for example, 0-level voltage are supplied to a comparator. The comparator compares magnitude of theses two voltage each other, and outputs a signal which indicates polarity corresponding to the comparison result. As described herein above, by removing high frequency component included in the error voltage to be supplied to the comparator with the LPF, the polarity signal with reduced fluctuation due to noise and good quality can be obtained. Thus the polarity of an error voltage for controlling rotation of a disc can be judged correctly.