AIR ACTIVATED ORGANOTIN CATALYSTS FOR POLYURETHANE SYNTHESIS
    3.
    发明申请
    AIR ACTIVATED ORGANOTIN CATALYSTS FOR POLYURETHANE SYNTHESIS 有权
    用于聚氨酯合成的空气活化有机阴离子催化剂

    公开(公告)号:US20100137487A1

    公开(公告)日:2010-06-03

    申请号:US12698288

    申请日:2010-02-02

    Abstract: This invention relates to an organotin-based catalyst system for polyurethane synthesis that is useful in coatings applications. The catalyst has low activity in the absence of oxygen. When a coating mixture comprising the catalyst is sprayed and/or applied to a substrate as a thin film in air, the catalyst is activated. For solvent-based refinish systems comprising hydroxyl and isocyanate species at high solids levels, the catalyst system therefore provides extended viscosity stability, i.e., pot life.

    Abstract translation: 本发明涉及用于聚氨酯合成的有机锡基催化剂体系,其可用于涂料应用。 催化剂在不存在氧的情况下具有低活性。 当包含催化剂的涂料混合物在空气中作为薄膜喷涂和/或施加到基材上时,催化剂被活化。 对于含有高固体含量的羟基和异氰酸酯物质的基于溶剂的修补体系,催化剂体系因此提供了延长的粘度稳定性,即适用期。

    METHOD FOR PRODUCING ALPHA - AMINO ACID INCLUDING PHOSPHORUS AND PRODUCTION INTERMEDIATES THEREOF
    6.
    发明申请
    METHOD FOR PRODUCING ALPHA - AMINO ACID INCLUDING PHOSPHORUS AND PRODUCTION INTERMEDIATES THEREOF 有权
    生产含氨基酸的氨基酸及其生产中间体的方法

    公开(公告)号:US20090270647A1

    公开(公告)日:2009-10-29

    申请号:US12442011

    申请日:2007-09-19

    Abstract: A method for efficiently producing L-2-amino-4-(hydroxymethylphosphinyl)-butanoic acid, useful as a herbicide, by a catalytic asymmetric synthesis reaction with a high asymmetric yield. The method includes a step in which a compound represented by the below formula (1) and a benzylamine are reacted in the presence of dehydrating agent, then the resulting mass is reacted with hydrogen cyanide in the presence of an asymmetric catalyst, followed by acid hydrolysis, further followed by elimination of a protective group. [chemical formula 1] (1) (where, R1 represents a C1-4 alkyl group.)

    Abstract translation: 通过具有高不对称产率的催化不对称合成反应有效生产可用作除草剂的L-2-氨基-4-(羟甲基氧膦基) - 丁酸的方法。 该方法包括在脱水剂的存在下使由下式(1)表示的化合物和苄胺反应的步骤,然后将所得物质与氰化氢在不对称催化剂的存在下反应,随后进行酸水解 ,然后除去保护基。 [化学式1](1)(其中,R 1表示C 1-4烷基)

    Preparation of cyclododecatriene
    7.
    发明授权
    Preparation of cyclododecatriene 失效
    环十二碳三烯的制备

    公开(公告)号:US3878258A

    公开(公告)日:1975-04-15

    申请号:US48781274

    申请日:1974-07-11

    Applicant: DU PONT

    Abstract: Process for preparing 1,5,9-cyclododecatriene by contacting butadiene with a catalyst system resulting from the mixing of an aluminum composition of the structure Z(2.5 3.5)Al2Cl(3.5 2.5) wherein Z is selected from the group consisting of alkyl radicals containing from 2 to 4 carbon atoms and the phenyl radical; a titanium compound of the formula TiA4 wherein A is selected from the class consisting of Cl, Br, I and OR wherein R is an organic radical of from 1 to 20 carbon atoms; and a promoter for the catalyst system wherein the promoter is selected from the group consisting of water, oxygen and oxygen-containing organic compounds, at a temperature in the range of 20* to 120*C. and at a pressure of 0.5 to 50 atmospheres and recovering cyclododecatriene-1,5,9 along with by-products 1,5-cyclooctadiene and 4-vinylcyclohexene, the improvement which comprises adding an iodide-containing composition or compound selected from the group consisting of Z(2.5 3.5)Al2I(3.5 2.5), Z2AlI, ZAlI2, and I2 wherein Z is selected from the group consisting of alkyl radicals containing from 2 to 4 carbon atoms and the phenyl radical, the molar ratio of iodine or iodide-containing composition or compound to aluminum composition being in the range of 0.05:10 to 5:10.

    Abstract translation: 通过使丁二烯与由Z(2.5-3.5)Al 2 Cl(3.5-2.5)结构的铝组合物混合而得到的催化剂体系制备1,5,9-环十二碳三烯的方法,其中Z选自烷基 含有2至4个碳原子的基团和苯基; 式TiA 4的钛化合物,其中A选自Cl,Br,I和OR,其中R是1至20个碳原子的有机基团; 和催化剂体系的助催化剂,其中助催化剂选自水,氧和含氧有机化合物,温度范围为20-120℃,压力为0.5至50大气压 并且与副产物1,5-环辛二烯和4-乙烯基环己烯一起回收环十二碳三烯-1,5,9,其改进包括加入选自Z(2.5-3.5)Al 2 I的含碘化物的组合物或化合物 3.5-2.5),Z2AlI,ZAlI2和I2,其中Z选自含有2至4个碳原子的烷基和苯基,碘或含碘化合物或化合物与铝组成的摩尔比为 在0.05:10至5:10的范围内。

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