CAS: 513-81-5; 2,3-Dimethyl-1,3-Butadiene

上下游产品

pyridine diethyl ether 3-Methyl-3-buten-2-one Ketene 3,4,3',4'-tetramethyl-6,6'-oxalyl-bis-cyclohex-3-enecarboxylic acid (6-benzoyl-3,4-dimethylcyclohex-3-enyl)(phenyl)methanone (3aRS,7aSR)-5,6-dimethyl-3a,4,7,7a-tetrahydrobenzo[d][1,3]dioxol-2-one 4,5-dimethyl-4-cyclohexene-1,2-dicarboxylic acid anhydride

📜1,2-二甲基环丁烯 反应生成 2,3-二甲基-1,3-丁二烯
参考文献:Selective Isomerization Of Butadiene-Cyclobutene Systems Via Infrared Multiphoton Excitation
标题:Selective Isomerization Of Butadiene-Cyclobutene Systems Via Infrared Multiphoton Excitation
摘要:
DOI:10.1021/ja00402A064

专利信息

专利号:US-11926589-B2
优先权日:2019-07-09
标 题 :Process for the synthesis of non-racemic cyclohexenes
发明人：REISMAN SARAH; ROMBOLA MICHAEL; LADD CAROLYN L; MCLAUGHLIN MARTIN JOHN; ZUEND STEPHAN; GOETZ ROLAND
权利人:BASF CORP; CALIFORNIA INST OF TECHN
摘要:This invention relates to a process for the synthesis of a non-racemic cyclohexene compound of formula (I) by a Diels-Alder reaction of a compound of formula (II) with a compound of formula (III) wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 and Y have the meanings as defined in the description in the presence of a catalyst comprising at least one m-valent metal cation M m+ wherein the metal M is selected from Scandium (Sc), Yttrium (Y), Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium 15 (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu), Gallium (Ga) and Indium (In), and m is an integer of 1, 2 or 3, and a chiral ligand of the formula (IV) wherein R 10a , R 10b , R 10c , R 10d , R 10a′ , R 10b′ , R 10c′ , R 10d′ , Z and Z′ have the meanings as defined in the description.

专利号:US-11059914-B2
优先权日:2016-12-21
标题:Method for the continuous synthesis of a diene elastomer with lithium amide initiator
发明人：DIRE CHARLOTTE; DESSENDIER MARIE-HÉLÈNE
权利人:MICHELIN & CIE
摘要:A process for the continuous synthesis of a diene elastomer is provided. The synthesis is conducted by means of n reactors r1 to rn, considered to be continuous stirred-tank reactors, which are equipped with an internal stirring system. The reactors are arranged in series, n varying from 2 to 15, preferably from 2 to 9. The reactor r1 is fed by an input solution comprising a solvent, one or more monomer(s), an anionic polymerization initiator chosen from lithium amides and a polar agent. The conversion by weight C1 in the first reactor is less than 70%, and the total conversion by weight Cn at the outlet of the reactor rn is greater than or equal to 70%.

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-9809661-B2
优先权日:2012-07-02
标 题 :Process for continuous synthesis of a diene elastomer
发明人：DUSSILLOLS JEROME; KIENER PIERRE; PAROLA HELENE
权利人:MICHELIN & CIE; MICHELIN RECH TECH; MICHELIN RECH TECH
摘要:A process for the continuous synthesis of diene elastomers with a high degree of conversion is provided. The process includes simultaneously:n a) introducing continuously into a polymerization reactor containing a gas phase and equipped with at least one stirring rotor and a discharge device, at least i. one or more monomers, including at least one conjugated diene monomer, and ii. from 0% to 70% by mass of an organic solvent, calculated relative to the total mass of monomers and of solvent b) continuously polymerizing the monomer(s), c) stirring the polymerization medium via the continuous movement of at least one stirring rotor about a rotary axle, d) continuously discharging the elastomer paste, e) continuously conveying the discharged elastomer paste to a chopping device and chopping it into particles, f) removing solvent from the particles of the elastomer paste, and g) recovering diene elastomer.

专利号:US-5859268-A
优先权日:1996-04-09
标 题:Process for the synthesis of α, β-unsaturated esters
发明人：ANGELICI ROBERT J; SHIH KUO-CHEN
权利人:UNIV IOWA STATE RES FOUND INC
摘要:The present invention provides a process for the synthesis of an α,β-unsaturated ester from a mono-olefin-ester using Fe(CO) 5 .

专利号:US-7829624-B2
优先权日:2007-06-29
标题:One-pot synthesis of nanoparticles and liquid polymer for rubber applications
发明人：WARREN SANDRA
权利人:BRIDGESTONE CORP
摘要:A method for performing a one-batch synthesis of a blend of nanoparticles and liquid polymer includes polymerizing a first monomer and optionally a second monomer in a hydrocarbon solvent to form the liquid polymer. The polymerization is terminated before completion with a quenching agent. Then a charge of polymerization initiator, and a mixture of multiple-vinyl aromatic monomer and mono-vinyl aromatic monomer are added. This causes further polymerization whereby nanoparticles are formed in situ having a core including the multiple-vinyl aromatic monomer, and a shell including the first monomer or the first monomer and the second monomer. Liquid polymer/nanoparticle blends resulting from the method and rubber compositions incorporating the blends are also disclosed.