Surface-fluorinated metal oxide particulates, process for manufacturing the same, and use of the same
    2.
    发明授权
    Surface-fluorinated metal oxide particulates, process for manufacturing the same, and use of the same 失效
    表面氟化金属氧化物微粒,其制造方法及其用途

    公开(公告)号:US06245140B1

    公开(公告)日:2001-06-12

    申请号:US08994984

    申请日:1997-12-19

    IPC分类号: C09D100

    摘要: A surface-fluorinated metal oxide particulate comprising a metal oxide particulate selected from titanium, aluminum, silicon, silver, copper, zirconium, zinc, tin, germanium, tantalum and the like, being reacted with fluorine and a process for manufacturing such surface-treated metal oxide particulates are disclosed. The process allows easy and efficient fluorination of the surface of metal oxide particulates in any desired ratio. The surface-fluorinated metal oxide particulates of the present invention are useful as an additive for weatherable paints, weatherable resins, cosmetics and the like. Surface-fluorinated titanium oxide particulates obtained by fluorination of titanium oxide particulates have improved light stability, water-repellence, and dispersibility as compared with conventional titanium oxide particulates and maintains surface smoothness of the resin-coated substrate when contained in high concentrations in thermoplastic resins as a white pigment with water content being controlled in a specified range and prevents the occurrence of troubles at the time of melt extrusion coating for obtaining resin-coated substrates.

    摘要翻译: 包含选自钛,铝,硅,银,铜,锆,锌,锡,锗,钽等的金属氧化物颗粒与氟反应的表面氟化金属氧化物颗粒和制造这种表面处理的方法 公开了金属氧化物微粒。 该方法允许以任何所需比例容易且有效地氟化金属氧化物颗粒的表面。 本发明的表面氟化金属氧化物颗粒可用作耐候性涂料,耐候性树脂,化妆品等的添加剂。 与常规氧化钛颗粒相比,通过氟化氧化钛颗粒获得的表面氟化氧化钛颗粒具有改善的光稳定性,防水性和分散性,并且当以热塑性树脂中高浓度含有时,保持树脂涂覆的基材的表面光滑度,如 将含有水分的白色颜料控制在规定范围内,防止在熔融挤出涂布时出现问题,得到树脂被覆基材。

    Alkyl thiobenzoate derivative, production of same and liquid crystal
display element
    3.
    发明授权
    Alkyl thiobenzoate derivative, production of same and liquid crystal display element 失效
    烷基硫代苯甲酸酯衍生物,制备相同液晶显示元件

    公开(公告)号:US5055225A

    公开(公告)日:1991-10-08

    申请号:US435872

    申请日:1989-11-14

    CPC分类号: C07C323/62 C09K19/2021

    摘要: An optically active benzoic acid derivative represented by formula (I): ##STR1## wherein R represents a straight chain alkyl group having 6 to 14 carbon atoms; Q* represents an optically active branched chain alkyl group having an asymmetric carbon atom; and m and n each represents an integer of 0 or 1, provided that m is not 0 when n is 1, a process for the production thereof, and a liquid crystal device element using the same are disclosed. The benzoic acid derivative exhibits a chiral smectic phase over a wide temperature range, a large spontaneous polarization and a high speed response.

    摘要翻译: 由式(I)表示的光学活性苯甲酸衍生物:其中R表示具有6至14个碳原子的直链烷基; Q *表示具有不对称碳原子的光学活性支链烷基; m和n各自表示0或1的整数,条件是当n为1时m不为0,其制备方法和使用其的液晶装置元件。 苯甲酸衍生物在宽温度范围内表现出手性近晶相,大的自发极化和高速响应。

    Process for producing an optically active benzoic acid derivative
    5.
    发明授权
    Process for producing an optically active benzoic acid derivative 失效
    用于生产光学活性苯甲酸衍生物的方法

    公开(公告)号:US5229032A

    公开(公告)日:1993-07-20

    申请号:US828224

    申请日:1992-01-30

    IPC分类号: C07C323/62 C09K19/20

    CPC分类号: C07C323/62 C09K19/2021

    摘要: An optically active benzoic acid derivative represented by formula (I): ##STR1## wherein R represents a straight chain alkyl group having 6 to 14 carbon atoms; Q* represents an optically active branched chain alkyl group having an asymmetric carbon atom; and m and n each represents an integer of 0 or 1, provided that m is not 0 when n is 1, a process for the production thereof, and a liquid crystal device element using the same are disclosed. The benzoic acid derivative exhibits a chiral smectic phase over a wide temperature range, a large spontaneous polarization and a high speed response.

    摘要翻译: 由式(I)表示的光学活性苯甲酸衍生物:其中R表示碳原子数为6〜14的直链烷基; Q *表示具有不对称碳原子的光学活性支链烷基; m和n各自表示0或1的整数,条件是当n为1时m不为0,其制备方法和使用其的液晶装置元件。 苯甲酸衍生物在宽温度范围内表现出手性近晶相,大的自发极化和高速响应。

    Optically active 4-mercaptocinnamic acid derivatives, preparation method
thereof and use thereof
    7.
    发明授权
    Optically active 4-mercaptocinnamic acid derivatives, preparation method thereof and use thereof 失效
    光学活性的4-巯基肉桂酸衍生物及其制备方法及用途

    公开(公告)号:US5308536A

    公开(公告)日:1994-05-03

    申请号:US89551

    申请日:1993-07-12

    CPC分类号: C09K19/586 C07C327/32

    摘要: An optically active 4-mercaptocinnamic acid derivative represented by general formula (1) ##STR1## wherein R.sup.1 represents an alkyl group, an alkoxy group alkylthio group having 6 to 14 carbon atoms; X is H or F; Y is H or CH.sub.3 ; n is 0 or 1; Z is CH.sub.3 or CF.sub.3 ; and R.sup.2 represents a C.sub.2-8 alkyl group, preparation method, bistable or tristable liquid crystal composition containing at least one such derivative, and a liquid crystal display device including such a liquid crystal composition.The compound of general formula (1) decreases liquid crystal temperature range and broadens it, and enables realizing a bistable or tristable chiral smectic phase. The compound can be used alone or as blended with other liquid crystals having a smectic phase or ferroelectric liquid crystals as a material for liquid crystal devices.

    摘要翻译: 由通式(1)表示的光学活性的4-巯基肉桂酸衍生物(1)其中R1表示烷基,具有6-14个碳原子的烷氧基烷硫基; X为H或F; Y是H或CH3; n为0或1; Z是CH 3或CF 3; R 2表示C2-8烷基,制备方法,含有至少一种这样的衍生物的双稳态或三稳态液晶组合物,以及包括这种液晶组合物的液晶显示装置。 通式(1)的化合物降低液晶温度范围并使其变宽,并且能够实现双稳态或三重手性近晶相。 该化合物可以单独使用或与具有近晶相或铁电液晶的其它液晶一起作为液晶装置的材料使用。

    Optical resolution process for DL-cysteine
    9.
    发明授权
    Optical resolution process for DL-cysteine 失效
    DL-半胱氨酸的光学拆分方法

    公开(公告)号:US4613688A

    公开(公告)日:1986-09-23

    申请号:US364702

    申请日:1982-04-02

    IPC分类号: C07B57/00

    CPC分类号: C07B57/00 Y02P20/582

    摘要: A process for the optical resolution of DL-cysteine which comprises(1) converting DL-cysteine into a hydrochloride thereof and forming a saturated or supersaturated aqueous solution thereof,(2) inoculating the solution with crystals of one optically active form of cysteine hydrochloride as seed crystals, and(3) preferentially crystallizing optically the same form of the cysteine hydrochloride used as the seed crystals, in a state of a monohydrate thereof.

    摘要翻译: 一种DL-半胱氨酸的光学拆分方法,其特征在于:(1)将DL-半胱氨酸转化成其盐酸盐,形成饱和或过饱和的水溶液,(2)用一种光学活性形式的半胱氨酸盐酸盐的晶体接种该溶液, 晶种,以及(3)以其一水合物的状态优选以与晶种相同的形式存在的晶体盐酸盐结晶。

    Process for production of .beta.-chloroalanine
    10.
    发明授权
    Process for production of .beta.-chloroalanine 失效
    β-氯丙氨酸生产工艺

    公开(公告)号:US4283554A

    公开(公告)日:1981-08-11

    申请号:US154379

    申请日:1980-05-29

    CPC分类号: C07C255/00

    摘要: A novel production process of .beta.-chloroalanine from chloroacetaldehyde is provided. In this process, a bisulfite or sulfite addition compound of chloroacetaldehyde is first reacted, in an aqueous solution, with ammonia and, then, reacted with hydrocyanic acid or a salt thereof. Thus, .alpha.-amino-.beta.-chloropropionitrile is formed. This .alpha.-amino-.beta.-chloropropionitrile is hydrolyzed under an acidic condition to form .beta.-chloroalanine.

    摘要翻译: 提供了一种从氯乙醛生产β-氯丙氨酸的新方法。 在该方法中,氯乙醛的亚硫酸氢盐或亚硫酸盐加成化合物首先在水溶液中与氨反应,然后与氢氰酸或其盐反应。 因此,形成α-氨基-β-氯丙腈。 该α-氨基-β-氯丙腈在酸性条件下水解形成β-氯丙氨酸。