序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
61 Viscosity index improving agents US77317658 1958-11-12 US2999120A 1961-09-05 WILGUS DONOVAN R
62 Dimerization of vinyl aromatic compounds US77805658 1958-12-04 US2956087A 1960-10-11 FRANK CHARLES E; SWINEHART JAMES S
63 Preparation of mono-alkylated aromatic compounds US47738554 1954-12-23 US2759030A 1956-08-14 LOUIS SCHMERLING
64 Photochemical preparation of polyphenylalkanes US568848 1948-01-31 US2555518A 1951-06-05 THOMPSON RALPH B
65 BIMESOGENIC COMPOUNDS AND MESOGENIC MEDIA US15525616 2015-10-23 US20170369780A1 2017-12-28 Kevin ADLEM; Owain Llyr PARRI; Rachel TUFFIN; Hassan ARASI; Thomas MACGREGOR
The invention relates to bimesogenic compounds of formula I to the use of bimesogenic compounds of formula I in liquid crystal media and particular to flexoelectric liquid crystal devices comprising a liquid crystal medium according to the present invention.
66 Tandem transfer hydrogenation and oligomerization for hydrocarbon production US14157744 2014-01-17 US09676680B2 2017-06-13 David Leitch; Jay A. Labinger; John E. Bercaw; Yan Choi Lam
A method for coupling an alkane with an alkene using a hydrogen transfer catalyst and an alkene dimerization catalyst to form one or more higher molecular weight hydrocarbons.
67 Compositions comprising TPGS-750-M US15167975 2016-05-27 US09656986B2 2017-05-23 Volker Berl
In one embodiment, the present application discloses mixtures comprising (a) water in an amount of at least 1% wt/wt of the mixture; (b) a transition metal catalyst; and (c) one or more solubilizing agents; and methods for using such mixtures for performing transition metal mediated bond formation reactions.
68 Compounds for neutron radiation detectors and systems thereof US14248951 2014-04-09 US09429663B2 2016-08-30 Stephen A. Payne; Wolfgang Stoeffl; Natalia P. Zaitseva; Nerine J. Cherepy; M. Leslie Carman
A composition of matter includes an organic molecule having a composition different than stilbene. The organic molecule is embodied as a crystal, and exhibits: an optical response signature for neutrons; an optical response signature for gamma rays, and performance comparable to or superior to stilbene in terms of distinguishing neutrons from gamma rays. The optical response signature for neutrons is different than the optical response signature for gamma rays.
69 COMPOUNDS FOR NEUTRON RADIATION DETECTORS AND SYSTEMS THEREOF US14248951 2014-04-09 US20140291532A1 2014-10-02 Stephen A. Payne; Wolfgang Stoeffl; Natalia P. Zaitseva; Nerine J. Cherepy; M. Leslie Carman
A composition of matter includes an organic molecule having a composition different than stilbene. The organic molecule is embodied as a crystal, and exhibits: an optical response signature for neutrons; an optical response signature for gamma rays, and performance comparable to or superior to stilbene in terms of distinguishing neutrons from gamma rays. The optical response signature for neutrons is different than the optical response signature for gamma rays.
70 COMPOUNDS FOR NEUTRON RADIATION DETECTORS AND SYSTEMS THEREOF US13736898 2013-01-08 US20130181135A1 2013-07-18 Stephen A. Payne; Wolfgang Stoeffl; Natalia P. Zaitseva; Nerine J. Cherepy; M. Leslie Carman
A material according to one embodiment exhibits an optical response signature for neutrons that is different than an optical response signature for gamma rays, said material exhibiting performance comparable to or superior to stilbene in terms of distinguishing neutrons from gamma rays, wherein the material is not stilbene, the material comprising a molecule selected from a group consisting of: two or more benzene rings, one or more benzene rings with a carboxylic acid group, one or more benzene rings with at least one double bound adjacent to said benzene ring, and one or more benzene rings for which at least one atom in the benzene ring is not carbon.
71 Compounds for neutron radiation detectors and systems thereof US12418450 2009-04-03 US08461546B2 2013-06-11 Stephen A. Payne; Wolfgang Stoeffl; Natalia P. Zaitseva; Nerine J. Cherepy; M. Leslie Carman
One embodiment includes a material exhibiting an optical response signature for neutrons that is different than an optical response signature for gamma rays, said material exhibiting performance comparable to or superior to stilbene in terms of distinguishing neutrons from gamma rays, wherein the material is not stilbene. Another embodiment includes a substantially pure crystal exhibiting an optical response signature for neutrons that is different than an optical response signature for gamma rays, the substantially pure crystal comprising a material selected from a group consisting of: 1-1-4-4-tetraphenyl-1-3-butadiene; 2-fluorobiphenyl-4-carboxylic acid; 4-biphenylcarboxylic acid; 9-10-diphenylanthracene; 9-phenylanthracene; 1-3-5-triphenylbenzene; m-terphenyl; bis-MSB; p-terphenyl; diphenylacetylene; 2-5-diphenyoxazole; 4-benzylbiphenyl; biphenyl; 4-methoxybiphenyl; n-phenylanthranilic acid; and 1-4-diphenyl-1-3-butadiene.
72 Fluids having partially hydrogenated substituted styrene linear dimers and method of making same US12607758 2009-10-28 US08252735B2 2012-08-28 Mark Paul Hagemeister; Thomas R. Forbus, Jr.
A basestock that comprises a fully hydrogenated substituted styrene linear dimer; a partially hydrogenated mono-aromatic substituted styrene linear dimer; and a partially hydrogenated di-aromatic substituted styrene linear dimer. A process of producing a basestock that comprises reacting a feed stream that comprises substituted styrene, alcohol, and a dimerization catalyst, in the presence of a solvent, to form a crude slurry of dimerized substituted styrene; and partially hydrogenating the dimerized substituted styrene with hydrogen over a Group VIII catalyst to form a basestock that comprises a fully hydrogenated substituted styrene linear dimer and a partially hydrogenated substituted styrene linear dimer.
73 Toluene And Styrene Derived Telomer Distributions and Brominated Flame Retardants Produced Therefrom US13130098 2009-11-30 US20110224363A1 2011-09-15 William J. Layman; Charles H. Kolich; Arthur G. Mack; Steven A. Anderson; Jonathan P. McCarney; Junzuo Wang
This invention relates to novel and useful toluene and styrene derived telomer distributions, such distributions being desirable substrates for the preparation of brominated flame retardants.
74 Fluids having partially hydrogenated substituted styrene linear dimers and method of making same US11205679 2005-08-17 US07629303B2 2009-12-08 Mark Paul Hagemeister; Thomas R. Forbus, Jr.
A basestock that comprises a fully hydrogenated substituted styrene linear dimer; a partially hydrogenated mono-aromatic substituted styrene linear dimer; and a partially hydrogenated di-aromatic substituted styrene linear dimer. A process of producing a basestock that comprises reacting a feed stream that comprises substituted styrene, alcohol, and a dimerization catalyst, in the presence of a solvent, to form a crude slurry of dimerized substituted styrene; and partially hydrogenating the dimerized substituted styrene with hydrogen over a Group VIII catalyst to form a basestock that comprises a fully hydrogenated substituted styrene linear dimer and a partially hydrogenated substituted styrene linear dimer.
75 P-chiral phospholanes and phosphocyclic compounds and their use in asymmetric catalytic reactions US10856014 2004-05-28 US07169953B2 2007-01-30 Xumu Zhang; Wenjun Tang
Chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition; epoxidation, kinetic resolution and [m+n] cycloaddition. Processes for the preparation of the ligands are also described.
76 P-chiral phospholanes and phosphocyclic compounds and their use in asymmetric catalytic reactions US11031159 2005-01-07 US07153809B2 2006-12-26 Xumu Zhang; Wenjun Tang
Chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition; epoxidation, kinetic resolution and [m+n] cycloaddition. Processes for the preparation of the ligands are also described.
77 P-chiral phospholanes and phosphocyclic compounds and their use in asymmetric catalytic reactions US10291232 2002-11-08 US07105702B2 2006-09-12 Xumu Zhang; Wenjun Tang
Chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition; epoxidation, kinetic resolution and [m+n] cycloaddition. Processes for the preparation of the ligands are also described.
78 Method of reacting carboxylic acids US10659738 2003-09-11 US20040079630A1 2004-04-29 Paul Watts; Stephen John Haswell
A carboxylic acid molecule (R COOH) is subjected to an electric field in a micro-reactor (11). The molecule decarboxyles to form a radical (Rnull). Two radicals (Rnull) can dimerise to form the product (R-R). It is believed that the reaction occurs away from the electrodes used to apply the electric field (but may also occur at the electrode surfaces).
79 P-chiral phospholanes and phosphocyclic compounds and their use in asymmetric catalytic reactions US10291232 2002-11-08 US20030144137A1 2003-07-31 Xumu Zhang; Wenjun Tang
Chiral ligands and metal complexes based on such chiral ligands useful in asymmetric catalysis are disclosed. The metal complexes according to the present invention are useful as catalysts in asymmetric reactions, such as, hydrogenation, hydride transfer, allylic alkylation, hydrosilylation, hydroboration, hydrovinylation, hydroformylation, olefin metathesis, hydrocarboxylation, isomerization, cyclopropanation, Diels-Alder reaction, Heck reaction, isomerization, Aldol reaction, Michael addition; epoxidation, kinetic resolution and nullmnullnnull cycloaddition. Processes for the preparation of the ligands are also described.
80 Process for the preparation of substituted aromatic compound employing friedel-crafts reaction using a reusable basic anionic clay catalyst US09685682 2000-10-10 US06548722B1 2003-04-15 Vasant Ramchandra Choudhary; Suman Kumar Jana
A process for Friedel-Crafts type liquid-phase alkylation or acylation of an aromatic compound using a hydrotalcite-type basic anionic clay catalyst represented by a formula: [(M2−)1−x(M3+)x(OH)2]x+[Ay−]x/yqH2O where M2+ is a divalent cation selected from Mg2+, Zn2+, Ni2+, Co2+, Mn2+, Cu2+ or a mixture thereof; M3+ is a trivalent cation selected from Ga3+, In3+ Al3+, Fe3+ Cr3+ or a mixture thereof; x is a mole fraction of trivalent cations in the range of about 0.05 to about 0.5; 0 is oxygen; H is hydrogen; Ay− is an anion; y minus is an anionic negative charge having a value of 1 minus or 2 minus; and q is a number of water molecules, as the water of hydration; and involving following steps: i. pretreating said catalyst by contacting it with a halogen containing compound in the presence or absence of a non-aqueous solvent and optionally washing the pretreated catalyst with non-aqueous solvent or liquid aromatic compound to be alkylated or acylated; and then ii. contacting a liquid reaction mixture comprising said aromatic compound and said alkylating or acylating agent in the presence or absence of a non-aqueous solvent with the catalyst obtained from step (i) in a stirred batch reactor fitted with a reflux condenser under vigorous stirring, in the presence or absence of an inert gas bubbling through the reaction mixture, at effective reaction conditions; iii. cooling the reaction mixture to a temperature about 30° C., removing said catalyst from the reaction mixture by filtration and then separating the reaction products from the reaction mixture, and optionally washing the used catalyst by non-aqueous solvent, and if desired, iv. reusing the used catalyst directly with or without drying for the subsequent reaction batch avoiding step (i), is disclosed.
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