专利号:US-4472568-A 优先权日:1981-11-12 标 题:Process for the preparation of polyamines from N-monoaryl-N',N'-dialkyl urea compounds and their use for the synthesis of polyurethanes 发明人:RASSHOFER WERNER; GROEGLER GERHARD 权利人:BAYER AG 摘要:This invention relates to an improved process for the preparation of aromatic polyamines containing urethane and/or biuret and/or urea and/or isocyanurate groups and preferably also ether groups by the hydrolysis of poly-N-monoaryl-N',N'-dialkyl urea compounds (1-aryl-3,3-dialkyl ureas). The ureas are obtained by the reaction of secondary aliphatic, cycloaliphatic or saturated heterocyclic amines with divalent to tetravalent isocyanate compounds containing isocyanate end groups attached to aromatic residues. The ureas correspond to the general formula: wherein R1, R2 denote alkyl or cycloalkyl groups, or together form a ring and A denotes a divalent to tetravalent residue attached to the ureas by aromatic groups. Hydrolysis is carried out in the presence of water and up to two equivalents of a base containing hydroxide ions and/or up to two equivalents of a compound containing tertiary amino groups, optionally in the presence of solvents. The use of the polyamines obtained by this process for the synthesis of polyurethanes is also described.
专利号:US-6500904-B1 优先权日:2001-11-02 标 题:High molecular weight poly(imide)s and methods of synthesis thereof 发明人:HAYES ROBERT F 权利人:GEN ELECTRIC 摘要:A method for the synthesis of high molecular weight poly(imide)s comprising coupling poly(imide) precursors having complementary functional groups and a weight average molecular weight of less than about 50,000 Daltons to form high molecular weight poly (imides)s having a weight average molecular weight greater than 50,000 Daltons.
专利号:US-2024123076-A1 优先权日:2021-02-08 标题:Unsaturated dendrimers compositions, related formulations, and methods of use thereof 发明人:LEE SANG M; SIEGWART DANIEL J 权利人:UNIV TEXAS 摘要:Described herein are novel lipid compositions comprising unsaturated dendrimers and methods of synthesis of unsaturated dendrimers. The lipid composition can comprise an ionizable cationic lipid, a phospholipid, and a selective organ targeting lipid. Also described herein are pharmaceutical formulations comprising an unsaturated dendrimer, a lipid composition, and a therapeutic agent. Further described in here are methods of mRNA delivery comprising a lipid composition and a therapeutic agent. Further described herein are high-potency dosage forms of a therapeutic formulated with a lipid composition.
专利号:US-6174956-B1 优先权日:1995-06-02 标题 :Synthesis of condensation polymers in densified fluids 发明人:KERSCHNER JUDITH LYNNE; JURELLER SHARON HARRIOTT; THOMAIDES JOHN SOCRATES; HUMPHREYS ROBERT WILLIAM; IOVINE CARMINE PHILLIP 权利人:NAT STARCH CHEM INVEST 摘要:A polyurethane polymer and method of preparing it is described. The process requires the combination of a soluble polyol with a di- or polyisocyanate under densified fluid conditions. The process to prepare a waterborne polyurethane involves the utilization of a polyol containing ionic or latent ionic groups which must undergo preneutralization before combining with the di- or polyisocyanate under densified fluid conditions. The resulting polyurethane is substantially free of an organic solvent.
专利号:US-8877977-B2 优先权日:2011-11-25 标题 :Synthesis of polyalkylenepolyamines having a low color index by homogeneously catalyzed alcohol amination in the presence of hydrogen 发明人:STRAUTMANN JULIA; SCHAUB THOMAS; HUEFFER STEPHAN; MAAS STEFFEN; PACIELLO ROCCO 权利人:STRAUTMANN JULIA; SCHAUB THOMAS; HUEFFER STEPHAN; MAAS STEFFEN; PACIELLO ROCCO; BASF SE 摘要:Process for the preparation of polyalkylenepolyamines by homogeneously catalyzed alcohol amination, in which aliphatic amino alcohols are reacted with one another or aliphatic diamines or polyamines are reacted with aliphatic diols or polyols with the elimination of water in the presence of a homogeneous catalyst and in the presence of hydrogen gas. Polyalkylenepolyamines obtainable by such processes and polyalkylenepolyamines comprising hydroxy groups, secondary amines or tertiary amines. Uses of such polyalkylenepolyamines as adhesion promoters for printing inks, adhesion promoters in composite films, cohesion promoters for adhesives, crosslinkers/curing agents for resins, primers for paints, wet-adhesion promoters for emulsion paints, complexing agents and flocculating agents, penetration assistants in wood preservation, corrosion inhibitors, immobilizing agents for proteins and enzymes.
专利号:US-2021332000-A1 优先权日:2014-12-19 标 题:Ethyl Benzyl Quaternary Amines of Amido Amines for Improved Antifungal properties 发明人:DALY THOMAS P 权利人:DALY THOMAS P 摘要:Ethylbenzyl chloride quats (EB quats) and their related salts. The synthesis of EB quats requires minimal capital requirements, produces products in good yields, without difficult to dispose of waste and in a cost-effective manner. The preferred embodiment of the invention is to perform a condensation reaction of a linear or branched, saturated or unsaturated fatty acid, of between 2 and 22 carbons with an amine that has either a primary amine and tertiary amine or a secondary amine and tertiary amine. An example is dimethylaminopropylamine (DMAPA). The amido amine that results from the condensation reaction described is then reacted with ethyl benzyl chloride (EBC) to produce the desired EB quat. Additional processing, such as ion exchange can be performed to eliminate the chlorine or substitute it for another anionic species, organic or inorganic.
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合成参考文献
摘要:D.E. Goldberg and W.C. Fernelius. J. Phys. Chem. 63, 1328 (1959).