摘要:
A liquid crystal compound represented by formula: ##STR1## wherein R.sub.1 represents a straight chain alkyl group having from 4 to 18 carbon atoms; R.sub.2 represents a straight chain alkyl group having from 2 to 6 carbon atoms or a branched alkyl group having from 3 to 6 atoms and having a methyl group as a side chain; and m and n each represents 1 or 2, is disclosed.The liquid crystal compound of formula (I) is optically and electrically stable and exhibits fast electro-optical switching in image display.
摘要:
A perfume composition is described, which contains at least one compound of bicyclo[2,2,2]octane and bicyclo[2,2,2]octene derivatives represented by the general formula (I) ##STR1## wherein the symbols are the same as defined hereinbefore.
摘要:
A 1,1,4,4-tetraphenyl-1,3-butadiene derivatives represented by formula (I): ##STR1## wherein R.sub.1 represents a di-lower alkylamino group, and R.sub.2 represents a hydrogen atom or a di-lower alkylamino group, is disclosed, which has useful characteristics such as excellent static charge retention ability. An electrophotographic light-sensitive material using the foregoing derivative can satisfy the requirements, e.g., for high sensitivity, low residual potential, less light fatigue even after repeated use, and excellent durability.
摘要:
(2R,3R)-3-N-(L-aspartyl)amino-1-(1-methyl-2-norbornyl)-2-butanol and (2R,3R)-3-N-(L-aspartyl)amino-1-(3-methyl-2-norbornyl)-2-butanol as well as a sweetener comprising the same are disclosed. These compounds, which have excellent sweetness characteristics and are stable in acidic aqueous solutions, are highly useful as a sweetener in various fields.
摘要:
A liquid crystal compound represented by formula: ##STR1## wherein R.sub.1 represents a straight chain alkyl group having from 4 to 18 carbon atoms; R.sub.2 represents a straight chain alkyl group having from 2 to 6 carbon atoms or a branched alkyl group having from 3 to 6 atoms and having a methyl group as a side chain; and m and n each represents 1 or 2, is disclosed.The liquid crystal compound of formula (I) is optically and electrically stable and exhibits fast electro-optical switching in image display.
摘要:
A process for preparing a brassylic diester of the formula:ROOC--CH.sub.2).sub.11 COORwherein R is a lower alkyl group by hydrocracking 6,6'-methylenebis-(6-hexanolide) in an alcohol of the formula:ROH(wherein R is as defined above) in the presence of a metal catalyst and an acid catalyst. A process for producing the hexanolide is also disclosed.
摘要:
A norbornane or norbornene derivative of the formula (I): ##STR1## wherein the bond represented by the dotted line is present or absent and n is 0 or 1, the norbornane and norbornene derivatives having a characteristic odor of sandalwood oil and useful for perfumery; and a process for the production thereof.
摘要:
A chewing gum base containing natural rubber, basic gum additives and a decomposition product obtained by thermally decomposing natural rubber at a temperature of 200.degree. C. to 350.degree. C. in an inert atmosphere and removing low boiling point fractions up to 160.degree. C. at a pressure of approximately 1 mm Hg.