摘要:
The present invention provides a coating agent composition capable of making interference fringes inconspicuous and suppressing the generation of cracks during the production of a hard coat layer without blending fine particles of metal oxides such as zirconium oxide and titanium oxide in an optical article in which a hard coat layer or a functional layer including a primer layer and a hard coat layer is formed on a plastic layer having a high refractive index. The coating agent composition comprises a trifunctional silane coupling agent and a bifunctional silane coupling agent in a solid content ratio of 95:5 to 10:90.
摘要:
An object is to provide a lipid particle that is not positively charged at a pH of the body fluid (typically in the neutral range), and that enables efficient onset of the effect of a medicinal substance encapsulated in the lipid particle; and to provide a lipid for forming the lipid particle. The object is achieved by the phospholipid represented by formula (1), and a lipid particle containing the phospholipid:
wherein R 1 and R 2 are identical or different, and represent a chain hydrocarbon group, m represents 1 or 2, n represents 1 or 2, and p represents an integer of 1 to 4.
摘要:
A process for producing high-quality cholesterol by selectively reducing impurities contained in crude cholesterol, mainly desmosterol, into cholesterol. The process can provide high-purity cholesterol containing at most 0.3 % of desmosterol and at most 0.5 % of dihydrocholesterol and having a purity of at least 99 % after reduction and crystallization in a yield of 85 % or above.
摘要:
The invention provides a process for purifying raw lanolins containing agricultural chemicals by removing the residual agricultural chemicals therefrom, which comprises subjecting the raw lanolins to at least one of the step (1) of hydrogenation in a molten state or in an organic solvent in the presence of a hydrogenation catalyst at a temperature of 60 to 210°C under a hydrogen pressure of 1 atm or more with a hydrogen consumption of 0.001 to 0.05 wt. % based on the raw lanolin, the step (2) of distillation in vacuo at a temperature of 150 to 280°C under an absolute pressure of 10 to 500 x 10-3 mmHg, and the step (3) of adsorption on a resin selected from among those containing styrene-divinylbenzene as a skeleton, those containing acrylic ester as a skeleton and polystyrene resins and having a micropore size of about 10 to 250 Å or on a crystalline aluminosilicate having an internal diameter of about 9 to 13 Å.
摘要:
A process for producing a- and ω-hydroxy fatty acids by treating lanolin fatty acids with boric acid to esterify hydroxy fatty acids contained therein, distilling the reaction product in a vacuum to separate and purify the borates of the hydroxy fatty acids and non-hydroxy fatty acids, hydrolyzing the purified borates, and distilling the hydrolyzate; each of the lanolin fatty acids and esters thereof thus obtained; and cosmetics and external preparations prepared therefrom. The invention process provides light-colored, nearly odorless lanolin fatty acids readily and efficiently on an industrial scale, and the obtained acids can be utilized in the fields of medicines and cosmetics.
摘要:
The invention provides a process for purifying raw lanolins containing agricultural chemicals by removing the residual agricultural chemicals therefrom, which comprises subjecting the raw lanolins to at least one of the step (1) of hydrogenation in a molten state or in an organic solvent in the presence of a hydrogenation catalyst at a temperature of 60 to 210° C under a hydrogen pressure of 1 atm or more with a hydrogen consumption of 0.001 to 0.05 wt. % based on the raw lanolin, the step (2) of distillation in vacuo at a temperature of 150 to 280 C under an absolute pressure of 10 to 500 x 10 -3 mmHg, and the step (3) of adsorption on a resin selected from among those containing styrene-divinylbenzene as a skeleton, those containing acrylic ester as a skeleton and polystyrene resins and having a micropore size of about 10 to 250 Å or on a crystalline aluminosilicate having an internal diameter of about 9 to 13 A.
摘要:
A process for reacting (1) a component selected from the group consisting of sterols and branched aliphatic primary or secondary alcohols having 14 to 32 carbon atoms, and (2) a component selected from the group consisting of fatty acids and fatty acid esters in contact with an enzyme selected from the group consisting of lipase and cholesterol esterase or with the selected enzyme in an immobilized form, in a system selected from the group consisting of an aqueous medium and water-containing organic solvent to prepare a fatty acid ester of the component (1).
摘要:
The invention provides glycoside derivatives represented by general formula (I) (wherein G-O- represents a sugar residue free of the protective group, r represents hydrogen or methyl, m represents 1 or 2, n represents an integer of 1 to 4, and l represents an integer of 1 or more provided that l « n), polymers containing said glycoside derivatives, a process for their preparation, and uses of said polymers.
摘要:
Disclosed are a glycosidation catalyst comprising at least one of heteropoly acids represented by the formula H a X p M q O r ·bH₂O wherein X is P, As, Si or Ge, M is at least one species selected from the group consisting of Mo, W and V, a is 3 4 or 6, b is an integer of 0 to 30, p is 1 or 2, q is 12 or 18, and r is 40 or 62, with the proviso that when X is P or As, a is 3 or 6; when X is Si or Ge, a is 4; and further (1) when X is P or As and a is 3, or when X is Si or Ge and a is 4, M is at least one species selected from the group consisting of Mo, W and V, p is 1, q is 12 and r is 40; and (2) when X is P or As and a is 6, M is Mo or W, p is 2, q is 18 and r is 62, and a process for preparing a glycoside derivative by using said catalyst.