Process for preparing heterocycles
    6.
    发明授权
    Process for preparing heterocycles 失效
    制备杂环的方法

    公开(公告)号:US08222406B2

    公开(公告)日:2012-07-17

    申请号:US12564509

    申请日:2009-09-22

    IPC分类号: C07D413/00

    CPC分类号: C07D263/10 Y02P20/582

    摘要: Provided is a process for preparing a heterocycle by catalytic reaction of an aromatic dinitrile with an amino alcohol, wherein the process includes: initially charging into a reaction vessel the amino alcohol and a catalyst to produce a reaction mixture; adding the aromatic dinitrile into the reaction mixture, which is maintained at a reaction temperature, wherein no solvent other than the amino alcohol of formula (III) is added to the reaction mixture prior to and/or during the catalytic reaction; and after completion of the catalytic reaction, completely replacing, or substantially completely replacing, unreacted amino alcohol with a nonpolar solvent to obtain the heterocycle, wherein the unreacted amino alcohol is present in an amount of not more than 20 wt. %, preferably 3-10 wt. % or less, based on a total weight of the heterocycle.

    摘要翻译: 提供了通过芳族二腈与氨基醇的催化反应制备杂环的方法,其中该方法包括:首先将氨基醇和催化剂装入反应容器中以产生反应混合物; 将芳族二腈加入反应混合物中,其保持在反应温度下,其中在催化反应之前和/或催化反应期间,将不超过式(III)的氨基醇的溶剂加入到反应混合物中; 并且在催化反应完成后,用非极性溶剂完全替代或基本上完全替代未反应的氨基醇,得到杂环,其中未反应的氨基醇的存在量不超过20wt。 %,优选3-10wt。 %以下,基于杂环的总重量。

    HYDROGEL BASED ON COPOLYMERS CONTAINING SILICONE
    7.
    发明申请
    HYDROGEL BASED ON COPOLYMERS CONTAINING SILICONE 审中-公开
    基于含硅聚合物的水凝胶

    公开(公告)号:US20110046332A1

    公开(公告)日:2011-02-24

    申请号:US12936486

    申请日:2009-04-23

    摘要: The invention relates to a hydrogel which is a copolymer formed from a polymerizable monomer mixture which contains a) 10-65 mol % of at least one hydrophobic vinyl monomer of the formula I in which R1 is hydrogen or methyl, p is an integer from 1 to 8, whose hydroxyl groups are present in protected form, b) 25-70 mol % of at least one silicone-containing (meth)acrylate, vinyl carbonate or vinyl carbamate monomer, c) 0-25 mol % of at least one hydrophilic vinyl monomer and d) 0-10 mol % of at least one crosslinker, based on the total amount of monomers a) to c), and where the hydroxyl groups of the segments formed by the monomers a) in the hydrogel are present in protected form or in free form. The hydrogel can be used to produce contact lenses or intraocular lenses.

    摘要翻译: 本发明涉及一种水凝胶,其是由可聚合单体混合物形成的共聚物,其包含a)10-65mol%的至少一种式I的疏水性乙烯基单体,其中R 1是氢或甲基,p是1的整数 至8,其羟基以保护形式存在,b)25-70mol%的至少一种含硅氧烷的(甲基)丙烯酸酯,碳酸乙烯酯或氨基甲酸乙烯酯单体,c)0-25mol%的至少一种亲水 乙烯基单体和d)0-10摩尔%的至少一种交联剂,基于单体a)至c)的总量,并且其中由水凝胶中的单体a)形成的链段的羟基存在于受保护的 形式或自由形式。 水凝胶可用于制造隐形眼镜或眼内透镜。

    Color stabilization of base-stabilized ethylenically modified unsaturated monomers
    8.
    发明授权
    Color stabilization of base-stabilized ethylenically modified unsaturated monomers 失效
    碱稳定的烯属改性不饱和单体的稳定性

    公开(公告)号:US07002035B2

    公开(公告)日:2006-02-21

    申请号:US10482278

    申请日:2002-05-16

    IPC分类号: C07C69/00 C07C69/52 C07C69/66

    CPC分类号: C07C67/62 C07C69/54

    摘要: The invention relates to the use of at least one compound from the tocopherol group for the color stabilization of ethylenically unsaturated monomers, particularly hydroxyalkyl(meth)acrylates, which already comprise at least one polymerization inhibitor for base stabilization or storage stabilization. Such color-stabilized and polymerization-inhibited monomers are preferably used in clearcoat and high solid paints.

    摘要翻译: 本发明涉及至少一种来自生育酚基团的化合物用于烯属不饱和单体,特别是羟基烷基(甲基)丙烯酸酯的颜色稳定化的用途,其已包含至少一种用于碱稳定化或储存稳定化的阻聚剂。 这种着色稳定和聚合抑制单体优选用于透明涂层和高固体涂料中。

    PROCESS FOR STABILIZING CYCLOBUTANONE DERIVATIVES
    10.
    发明申请
    PROCESS FOR STABILIZING CYCLOBUTANONE DERIVATIVES 失效
    稳定环己酮衍生物的方法

    公开(公告)号:US20080221365A1

    公开(公告)日:2008-09-11

    申请号:US12037992

    申请日:2008-02-27

    IPC分类号: C07C45/78

    CPC分类号: C07C45/86 C07C49/39

    摘要: A process for stabilizing cyclobutanone derivatives, comprising adding at least one of an alkali metal carbonate, alkali metal oxide, alkaline earth metal carbonate, and alkaline earth metal oxide as a stabilizer to at least one cyclobutanone derivative of the structure where R1, R2, R3, R4, R5 and R6 are each independently hydrogen or an alkyl, aralkyl, cycloalkyl, aryl, alkylaryl, hydroxyl, alkoxy, halogen, cyano or carboxyl group; and the correspondingly stabilized cyclobutanone derivatives.

    摘要翻译: 一种稳定环丁酮衍生物的方法,包括将至少一种碱金属碳酸盐,碱金属氧化物,碱土金属碳酸盐和碱土金属氧化物中的至少一种作为稳定剂加入到至少一种结构的环丁酮衍生物中,其中R 1 R 2,R 3,R 3,R 4,R 5和R 6 烷基,芳烷基,环烷基,芳基,烷芳基,羟基,烷氧基,卤素,氰基或羧基; 和相应稳定的环丁酮衍生物。