专利号:US-2024368099-A1 优先权日:2022-01-18 标 题:Methods for the synthesis of di(hydroxymethyl)tetrahydrofuran and its application in polyesters and polyurethanes 发明人:SPIEGELBERG BRIAN; BRANDT ADRIAN; BECK HORST; KUX ALEXANDER; TIN SERGEY; DE VRIES JOHANNES GERARDUS 权利人:HENKEL AG & CO KGAA 摘要:The present invention relates to the synthesis of di(hydroxymethyl)tetrahydrofuran (DHMTHF) and the preparation of trans-enriched mixtures of DHMTHF. The invention further refers to polyester polyols which are obtained by reaction of cis/trans DHMTHF mixtures with a dicarboxylic acid. The invention further relates to polyurethanes and compositions containing a polyester polyol comprising DHMTHF, in particular to such polyurethane-containing (adhesive) compositions.
专利号:US-9724673-B2 优先权日:2011-06-30 标 题:Supported alkoxylated organotin reactant, preparation and use for heterogeneous-phase synthesis of tetrazoles 发明人:LE GROGNEC ERWAN; QUINTARD JEAN-PAUL; KERRIC GAELLE; CHRETIEN JEAN-MATHIEU; ZAMMATTIO FRANCOISE 权利人:LE GROGNEC ERWAN; QUINTARD JEAN-PAUL; KERRIC GAELLE; CHRETIEN JEAN-MATHIEU; ZAMMATTIO FRANCOISE; UNIV NANTES; CENTRE NAT RECH SCIENT 摘要:A supported alkoxylated organotin reactant, to the process for preparing same, to the use of such a reactant as a catalyst for heterogeneous-phase organic synthesis, and also to a process for heterogeneous-phase synthesis of 5-substituted or 1,5-disubstituted tetrazoles using such a reactant.
专利号:US-10428206-B2 优先权日:2015-07-02 标 题 :Process for the continuous synthesis of a modified diene elastomer 发明人:DORATO MARGARITA; FLESINSKI LIONEL 权利人:MICHELIN & CIE 摘要:A process for the continuous synthesis of a modified diene elastomer includes:n polymerization by n reactors r1 to rn equipped with an internal stirring system, the reactor r1 being fed by an input solution comprising a solvent, one or more monomers, an anionic polymerization initiator and a polar agent, one or more of the reactors being fed by reinjection of a purified solution comprising solvent and/or monomer(s), the number of dead chains in the output stream from the reactor rn is less than 30% of the number of living chains initiated in the reactor r1, the temperature of each reactor varying from 20° C. to 150° C.; and modification of the living diene elastomer obtained in the preceding stage and exhibiting a polydispersity index varying from 1.1 to 2, making it possible to introduce, into the elastomer, a functional group comprising at least one silicon atom directly connected to the elastomer chain.
专利号:US-2024383928-A1 优先权日:2021-07-30 标 题:Production of diorganotin dihalides 发明人:VINCENT ROBERT; ZIMMERMANN JARROD C 权利人:MERCK PATENT GMBH 摘要:The disclosed and claimed subject matter relates to the safe and efficient synthesis of diorganotin dihalide compounds of the formula R2SnX2 that as-synthesized are free of tetraalkyltin (R4Sn), trialkyltin halide (R3SnX) and monoalkyltin trihalide (RSnX3) species and of methods for their synthesis and use.
专利号:US-8329958-B2 优先权日:2004-07-02 标 题:Combinatorial synthesis of PEG oligomer libraries 发明人:RIGGS-SAUTHIER JENNIFER A; EKWURIBE NNOCHIRI N 权利人:RIGGS-SAUTHIER JENNIFER A; EKWURIBE NNOCHIRI N; BIOCON LTD 摘要:A simple chain-extending approach was established for the scale-up of the monoprotected monodisperse PEG diol materials. Reactions of THP-(OCH2CH2)n—OMs (n=4, 8, 12) with a large excess of commercially available H—(OCH2CH2)n—OH (n=1-4) under basic conditions led to THP-(OCH2CH2)n—OH (n=5-15). Similarly, Me-(OCH2CH2)n—OH (n=4-11, 13) were prepared from Me-(OCH2CH2)n—OMs (n=3, 7, 11). For the chain elongation steps, 40-80% yields were achieved through extraction purification. PEG oligomer libraries I and II were generated in 50-95% overall yields by alkylation or acylation of THP-(OCH2CH2)n—OH (n=1-15) followed by deprotection. Alkylation of Me-(OCH2CH2)n—OH (n=1-11, 13) with X—(CH2)m—CO2R (X=Br or OMs) and subsequent hydrolysis led to PEG oligomer library III in 30-60% overall yields. Combinatorial purification techniques were adapted to the larger-scale library synthesis. A total of 498 compounds, each with a weight of 2-5 g and a minimum purity of 90%, were synthesized.
专利号:WO-2023247609-A1 优先权日:2022-06-22 标题 :Process for the preparation of cyclohomogeranates 发明人:SCHELWIES MATHIAS; BRUNNER BERNHARD; PELZER RALF; LIST BENJAMIN; TURBERG MATHIAS; MITSCHKE BENJAMIN; DAS SAYANTANI; DE CHANDRA KANTA 权利人:BASF SE; STUDIENGESELLSCHAFT KOHLE GGMBH 摘要:The present invention relates to a process for the preparation of cyclohomogeranates. The invention relates to the synthesis of cyclohomogeranates from well available esters of homogeranic acid in only one step. The cyclohomogeranates prepared according to the process of the present invention can be used in the fragrance industry as intermediates or the compounds can be used as such as aroma compound.
摘要:Tchabanenko, K., Science of Synthesis Knowledge Updates, (2013) 1, 3. 摘要:Ramirez y Medina, I.-M.; Kipke, W.; Makow, J.; Staubitz, A., Science of Synthesis Knowledge Updates, (2020) 2, 43. 摘要:Hlina, J. A., Science of Synthesis Knowledge Updates, (2021) 1, 108. 摘要:Vrána, J.; Růžička, A., Science of Synthesis Knowledge Updates, (2021) 2, 27. 摘要:Hlina, J. A., Science of Synthesis Knowledge Updates, (2021) 1, 103.