摘要:
Disclosed is an ascorbic acid derivative or a salt thereof wherein at least one of hydrogen atoms in hydroxy groups at the 2-position and the 3-position of ascorbic acid is substituted by R—O—CH2—CH(OH)—CH2—, R—O—CH2—CH(CH2OH)—, R—CH(CH2OH)—, R—CH(OH)—CH2— (wherein R represents an alkyl group, an alkenyl group or a phenyl group), or a hydroxycyclohexyl group. Also disclosed is a method for producing an ascorbic acid derivative or a salt thereof, which is characterized by reacting ascorbic acid with an epoxy compound such as an alkyl glycidyl ether, an epoxy alkane or an alicyclic epoxy.
摘要:
According to one embodiment, an information processing apparatus includes a main body, a disc drive unit drives a removable medium, a first switch and a second switch which are provided on the main body, a unit which powers on the main body in response to an operation of one of the first switch and the second switch, a unit which determines whether a factor of the power-on of the main body is the operation of the first switch or the operation of the second switch, and a unit which executes a process for booting up an operating system if the factor of the power-on is the operation of the first switch, and executes a process for sending an eject command to the disc drive unit to eject the removable medium and then powering off the main body if the factor of the power-on is the operation of the second switch.
摘要:
Skin care cosmetics, such as lotions, creams and milky lotions, and hair cosmetics, such as hair creams, hair conditioners, hair rinses and shampoos, being excellent in moisturizing effect, applicability, stability and safety and characterized in containing an amino acid N-glyceryl derivative produced by reacting neutral, basic or acidic α-amino acid or salt thereof with glycidol or 3-halo-1,2-propanediol.
摘要:
An electronic apparatus has a plurality of operating systems. The apparatus includes a setting unit which preselects a program to be displayed or recorded under control of a first operating system, and a notifying unit which makes a notification as to whether the setting unit preselects the program while an application program is being executed under control of a second operating system.
摘要:
Dedicated registers are arranged in a status LCD control gate array connected to a system bus, and the dedicated registers or register group and a keyboard controller are connected through a keyboard interface bus. The keyboard controller has two ports for communicating with a CPU. The keyboard controller transfers existing commands released to an application program or the like and transmits normal key data through the system bus. The keyboard controller transmits hot key data and transfers a command for realizing any other special function through the keyboard interface bus and the dedicated registers.
摘要:
Benzophenone derivatives expressed by the following general expression (1):A(C--B).sub.n (1)wherein A in the above general expression (1) is a residual group obtained by removing one hydroxyl group from sugar or sugar alcohol, andB is a benzophenone group shown by the following general expression (2) ##STR1## wherein R.sub.1 through R.sub.10 each is expressed by hydrogen, hydroxyl group, an alkoxy group, or the aforesaid binder C, and at least one of them is the binder C. In the case of an alkoxy group, preferably the number of carbon atoms is 1 to 4.C is equivalent to --O--R-- (O is oxygen, R is a fatty chain, and the number of carbon atoms therein is preferably 1 to 4), or 1 mole of glycerin with one hydroxyl group therein bound to A and another hydroxyl group to B. The benzophenone derivatives according to the present invention have excellent capability to absorb ultraviolet rays as well as high compatibility with polar solvent. Also the external preparation for skin in which the benzophenone derivatives are mixed can be mixed in a polar base with wide availability for industrial purpose.
摘要:
A silicone type cinnamic acid derivative which is a siloxane having at least one unit represented by the formula (I): ##STR1## and having the other units which may exist in the siloxane being represented by the formula:O.sub.(4-m)/2 SiR.sub.m.sup.3wherein R.sup.1 represents an alkyl group having 1 to 4 carbon atoms, a phenyl group, or a trimethylsiloxy group, R.sup.2 is a divalent hydrocarbon group having at least two carbon atoms, which may include a heteroatom, O, X is an alkoxy group, n is an integer of 0 to 3, a is an integer of 2 or 3, R.sup.3 is an alkyl group having 1 to 4 carbon atoms, a phenyl group, or a trimethylsiloxy group, and m is an integer of 0 to 3.
摘要:
A highly active antioxidant composed of a diester of phosphoric acid with tocopherol and ascorbic acid or a salt thereof used to stabilize other materials.
摘要:
A dermatological external agent such as a pharmaceutical, quasi-drug, or cosmetic comprising tetrahydroabietic acid, a salt thereof, and hydrogenated rosin and a salt thereof, formulated therein, has an excellent antibacterial action, is not harmful to the human body, and has an excellent stability.
摘要:
Coloring fine particles produced by heating spheroidal coloring fine particles with an average fine particle diameter of 1-100 .mu.m obtained by suspension polymerization to a temperature of 30.degree. to 200.degree. C., thereby causing the particles to fuse together in a block without completely destroying the particle interfaces, and then crushing the block to substantially the same average particle diameter of the spheroidal coloring particles before melting, and a toner for developing electrostatic images using the same.