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    Precipitated silica for improved adsorption of volatile organic compounds
    2.
    发明申请
    Precipitated silica for improved adsorption of volatile organic compounds 有权

    公开(公告)号：US20250058296A1

    公开(公告)日：2025-02-20

    申请号：US18762747

    申请日：2024-07-03

    Applicant: Alexander Lygin

    Inventor： Alexander Lygin

    IPC: B01J20/10 ,  A23K20/105 ,  A61K31/21 ,  A61K47/02 ,  B01J20/28 ,  B01J20/30

    Abstract: Dry mixture comprising: (a) from 10% to 99% by weight of a precipitated silica having: (a1) BET surface area of from 30 m2/g to 700 m2/g, (a1) numerical median particle size d50 determined by laser diffraction method of from 100 μm to 600 μm, (a3) silanol group density dSiOH determined by reaction of the pre-dried silica with lithium aluminum hydride of from 1.55 to 3.65 SiOH/nm2 and (b) from 1 wt % to 90 wt % of at least one organic compound: (b1) selected from selected from an alcohol, a diol, an aldehyde, a ketone, a carboxylic acid, a carboxylic esters, a nitrate ester, an amine, and/or oxygen and/or nitrogen heterocycle, (b2) having 2 to 12 carbon atoms, (b3) having a vapour pressure of at least 0.01 kPa at 293 K, wherein the organic compound is adsorbed on the precipitated silica, the process for manufacturing thereof.

    Optimized process for manufacturing methyl methacrylate
    5.
    发明申请
    Optimized process for manufacturing methyl methacrylate 有权

    公开(公告)号：US20250002445A1

    公开(公告)日：2025-01-02

    申请号：US18420926

    申请日：2024-01-24

    Applicant: Alexander Lygin

    Inventor： Alexander Lygin

    IPC: C07C67/44 ,  B01J23/00 ,  B01J23/52 ,  B01J23/56

    Abstract: Process for catalytic oxidative esterification of methacrolein with methanol and oxygen to methyl methacrylate in the presence of a heterogeneous egg-shell catalyst comprising gold metal and an oxide of at least one second element selected from Ni, Co, Fe, Zn and/or Ti supported on a support material comprising SiO2, Al2O3 and at least one basic element oxide, characterized in that the process is carried out in the presence of at least one compound, comprising Ni, Co, Fe, Zn and/or Ti, which is soluble in the reaction mixture under process conditions.

    Preparation of substituted bridged indenyl and related ligands
    9.
    发明申请
    Preparation of substituted bridged indenyl and related ligands 失效

    公开(公告)号：US20070135596A1

    公开(公告)日：2007-06-14

    申请号：US11302846

    申请日：2005-12-14

    Applicant: Alexander Voskoboynikov ,  Mikhail Nikulin ,  Alexey Ryabov ,  Alexander Lygin ,  Catalina Coker ,  Jo Ann Canich

    Inventor： Alexander Voskoboynikov ,  Mikhail Nikulin ,  Alexey Ryabov ,  Alexander Lygin ,  Catalina Coker ,  Jo Ann Canich

    IPC: C08F4/44 ,  C07F7/18 ,  C07F9/02

    CPC classification number: C07F17/00

    Abstract: A process for preparing a chelating ligand of the formula (II) from a chelating ligand of the formula (I) via an sp2-sp2 or sp2-sp3 coupling reaction with an organometallic compound of the formula (III). wherein B is a bridging group that is bonded to L1 and L2 in formula (I) and to L3 and L4 in formula (II); L1 is a substituted monocyclic or polycyclic ligand that comprises at least one chlorine, bromine, iodine, or sulfonate substituent, directly bonded to an sp2 carbon atom of the ring structure of the ligand; L2 is a monoanionic ligand; or L2 may, independently, be defined as L1; L3 is the same group as L1, but said at least one chlorine, bromine, iodine, or sulfonate substituent is replaced with a hydrocarbyl, substituted hydrocarbyl, halocarbyl, or substituted halocarbyl fragment; L4 is the same group as L2, though, when L2 is defined as L1, L4 may be the same as L3 or L1; R1 is a hydrocarbyl, substituted hydrocarbyl, halocarbyl, or substituted halocarbyl; M1 is an element of group 1, 2, 12, 13 or 14 of the Periodic Table of the Elements; each X2, if present, is selected independently from the group consisting of halogen atoms, the hydroxyl group, alkoxy groups, aryloxy groups, mesylate, tosylate and triflate; r is 1, 2 or 3, and t is 0, 1 or 2, where r+t corresponds to the oxidation number of M1.

    Halogen substituted metallocene compounds for olefin polymerization
    10.
    发明申请
    Halogen substituted metallocene compounds for olefin polymerization 有权
    用于烯烃聚合的卤素取代的金属茂化合物

    公开(公告)号：US20070135595A1

    公开(公告)日：2007-06-14

    申请号：US11302821

    申请日：2005-12-14

    Applicant: Alexander Voskoboynikov ,  Alexey Ryabov ,  Mikhail Nikulin ,  Alexander Lygin ,  Catalina Coker ,  Jo Ann Canich

    Inventor： Alexander Voskoboynikov ,  Alexey Ryabov ,  Mikhail Nikulin ,  Alexander Lygin ,  Catalina Coker ,  Jo Ann Canich

    IPC: C08F4/44 ,  C07F17/00

    CPC classification number: C07F17/00 ,  Y10S526/941 ,  Y10S526/943

    Abstract: A metallocene compound is represented by the formula (1): wherein: M is a Group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom, preferably a Group 4 transition metal atom selected from titanium, zirconium or hafnium; E is a substituted or unsubstituted monocyclic or polycyclic arenyl ligand pi-bonded to M; A is a substituted or unsubstituted polycyclic arenyl ligand that is pi-bonded to M and has a different ring structure than the E ligand; at least one of the A and E ligands includes at least one halogen substituent directly bonded to an sp2 carbon at a bondable ring position; Y is a bridging group containing at least one Group 13, 14, 15, or 16 element and any single position of the ring structure of A and to any single position of the ring structure of E; and y is zero or 1, indicating the absence (y=0) or presence (y=1) of Y; and each X is a univalent anionic ligand, or two X are joined and bound to the metal atom to form a metallocycle ring, or two X are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand; provided that when E is an unsubstituted cyclopentadienyl ligand, either y is one or A is not 2-bromofluorenyl or 2,7-dibromofluorenyl.

    Abstract translation: 金属茂化合物由式（1）表示：其中：M是第3,4,5或6族过渡金属原子，或镧系元素金属原子或锕系金属原子，优选选自钛的第4族过渡金属原子 ，锆或铪; E是与M键合的取代或未取代的单环或多环的烷基配体; A是取代或未取代的与M配体结合并具有不同于E配体的环结构的多环烷基配体; A和E配体中的至少一个配体包括在可键合的环位置上直接键合到sp 2 O 2上的至少一个卤素取代基; Y是含有至少一个第13,14,15或16族元素和A的环结构的任何单个位置和E的环结构的任何单个位置的桥连基团; y为0或1，表示Y不存在（y = 0）或存在（y = 1）; 并且每个X是一价阴离子配体，或两个X连接并结合到金属原子以形成金属环，或者两个X连接形成螯合配体，二烯配体或亚烷基配体; 条件是当E是未取代的环戊二烯基配体时，y是1或A不是2-溴芴基或2,7-二溴芴基。

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