专利号:US-4627968-A 优先权日:1984-09-10 标 题 :Synthesis of crystalline aluminosilicate with alkylurea or alkylthiourea 发明人:KAI TADASHI 权利人:ASAHI CHEMICAL IND 摘要:In the synthesis of a crystalline aluminosilicate by heating an aqueous mixture containing a silica source, an alumina source and an alkali metal source, at least one compound selected from lower alkylureas and lower alkylthioureas is permitted to co-exist with the mixture.
专利号:US-9809565-B2 优先权日:2013-07-05 标 题 :Formation of chiral 4-chromanones using chiral pyrrolidines in the presence of ureas or thioureas 发明人:LETINOIS ULLA; NETSCHER THOMAS; ACKERMANN STEPHAN 权利人:DSM IP ASSETS BV 摘要:The present invention relates to a synthesis of chromanones or chromanes in a stereospecific matter in view of the 2-position in the chromanone or chromane ring. It has been found that this synthesis is particularly possible in the presence of a chiral compound of formula of a specific type and of at least one urea or thiourea.
专利号:US-8734846-B2 优先权日:2008-06-16 标 题 :Methods for the preparation of targeting agent functionalized diblock copolymers for use in fabrication of therapeutic targeted nanoparticles 发明人:ALI MIR M; HRKACH JEFF; ZALE STEPHEN E; ALVAREZ DE CIENFUEGOS LUIS 权利人:BIND BIOSCIENCES INC 摘要:This application provides nanoparticles and methods of making nanoparticles using pre-functionalized poly(ethylene glycol)(also referred to as PEG) as a macroinitiator for the synthesis of diblock copolymers. Ring opening polymerization yields the desired poly(ester)-poly (ethylene glycol)-targeting agent polymer that is used to impart targeting capability to therapeutic nanoparticles. This “polymerization fromâ€? approach typically employs precursors of the targeting agent wherein the reactivity of functional groups of the targeting agent is masked using protecting groups. Also described is a “coupling toâ€? that utilized the poly(ethylene glycol)-targeting agent conjugate where the targeting agent remains in its native un-protected form. This method uses “orthogonalâ€? chemistry that exhibit no cross reactivity towards functional groups typically found within targeting agents of interest.
专利号:WO-2014118073-A1 优先权日:2013-01-29 标 题 :Polysulfide polyols, their production and use in the synthesis of polyurethanes 发明人:BALBO BLOCK MARCO; RHUDY KEVIN; FLECKENSTEIN CHRISTOPH 权利人:BASF SE 摘要:The present invention relates to sulfur containing polyols, a process for their production by reaction of at least one unsaturated alcohol A with elemental sulfur, wherein the unsaturated alcohol A has only one carbon-carbon double bond-unsaturation per molecule. The sulfur containing polyols are used in the production of polyurethanes, in particular rigid foam polyurethanes, for high-temperature pipe insulation applications.
专利号:US-11753355-B2 优先权日:2019-05-01 标 题:Base oil synthesis via ionic catalyst oligomerization and waterless separation of the oligomerization catalyst 发明人:LACHEEN HOWARD STEVEN; TIMKEN HYE-KYUNG CHO 权利人:CHEVRON USA INC 摘要:Described herein is a base oil synthesis via ionic catalyst oligomerization further utilizing a hydrophobic process for removing an ionic catalyst from a reaction mixture with a silica gel composition, specifically a reaction mixture comprising an oligomerization reaction to produce PAO utilizing an ionic catalyst wherein the ionic catalyst is removed post reaction.
专利号:US-2008004415-A1 优先权日:2004-05-03 标题 :Non-linear optically active molecules, their synthesis, and use 发明人:MCGINNISS VINCENT D; RISSER STEVEN M; DROTLEFF ELIZABETH; JIANG EDWARD; SPAHR KEVIN B 权利人:OPTIMER PHOTONICS INC 摘要:In one aspect, the present invention provides a hyperpolarizable organic chromophore. The chromophore is a nonlinear optically active compound that includes a Ï€-donor conjugated to a Ï€-acceptor through a Ï€-electron conjugated bridge. In other aspects of the invention, donor structures and acceptor structures are provided. In another aspect of the invention, a chromophore-containing polymer is provided. In one embodiment, the chromophore is physically incorporated into the polymer to provide a composite. In another embodiment, the chromophore is covalently bonded to the polymer, either as a side chain polymer or through crosslinking into the polymer. In other aspects, the present invention also provides a method for making the chromophore, a method for making the chromophore-containing polymer, and methods for using the chromophore and chromophore-containing polymer.
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