The present invention relates to a method of producing an optically active cyanohydrin derivative, which comprises reacting an aldehyde or an asymmetrical ketone with a cyanating agent in the presence of a Lewis base and a titanium compound produced from a partial hydrolysate of titanium tetraalkoxide and an optically active ligand represented by formula (II) or a titanium oxoalkoxide compound represented by formula (I) [Ti
x
O
y
](OR
1
)
4x-2y
, and an optically active ligand represented by formula (II), wherein R
1
is an optionally substituted alkyl group or an optionally substituted aryl group; x is an integer of not less than 2; y is an integer of not less than 1; and y/x satisfies 0.1
本发明涉及一种制备光学活性氰醇衍生物的方法,包括在Lewis碱和由钛四烷氧化物的部分水解物和式(I)[TixOy](OR1)4x-2y,以及由式(II)表示的光学活性配体组成的钛氧烷衍生物的存在下,将醛或不对称酮与氰化试剂反应。其中,R1是可选的取代基的烷基或芳基;x为不小于2的整数;y为不小于1的整数;且y/x满足0.1
Personal care compositions with color changing indicator
申请人:Sabnis W. Ram
公开号:US20060222675A1
公开(公告)日:2006-10-05
The invention describes a composition for use in disinfecting a surface for personal use, such as a public restroom facility or telephone. The composition and delivery of the composition provides for the placement of a thin layer of disinfectant which includes a acid-base indicator. The acid-base indicator disappears as the thin layer effects the germicidal activity of the disinfectant. The composition is also rapidly drying, so that the acid-base indicator disappears as well as the disinfecting composition leaving the surface dry. The invention also relates to use of the compositions in a lotion, such as a sunscreen. Use of the acid-base indicator provides a method to visualize where the lotion is applied by color, with the color then later dissipating.
本发明描述了一种用于消毒个人使用表面的组合物,例如公共洗手间或电话。该组合物及其输送方式提供了一层薄薄的消毒剂,其中包括酸碱指示剂。随着薄层发挥消毒剂的杀菌活性,酸碱指示剂消失。该组合物也具有快速干燥的特性,因此酸碱指示剂以及消毒剂在表面干燥后也会消失。本发明还涉及将该组合物用于洗涤剂,例如防晒霜。使用酸碱指示剂提供了一种通过颜色可视化涂抹洗涤剂的方法,颜色随后会消失。
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