CAS: 769-25-5; 2,4,6-Trimethylstyrene

上下游产品

1-mesitylethanol acetylene 1,3,5-trimethyl-benzene 2-(2,4,6-Trimethyl-phenyl)-ethyl-p-toluolsulfonat 2-(2,4,6-trimethylphenyl)oxirane ethylmesitylene 2-(1,2-dibromo-ethyl)-1,3,5-trimethyl-benzene 3-phenyl-5-(2,4,6-trimethyl-phenyl)-isoxazole

📜2',4',6'-三甲基苯乙酮置于吡啶,Lithium Aluminium Tetrahydride,三氯氧磷体系中,用 乙醚 作为反应溶剂,化学反应生成 2,4,6-三甲基苯乙烯
参考文献:Anderson,Sven; Carter,Robert E.; Drakenberg,Torbjoern,Acta Chemica Scandinavica. Series B: Organic Chemistry And Biochemistry,1984,Vol. 38,# 7,P. 579-596
标题:Anderson,Sven; Carter,Robert E.; Drakenberg,Torbjoern,Acta Chemica Scandinavica. Series B: Organic Chemistry And Biochemistry,1984,Vol. 38,# 7,P. 579-596

专利信息

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:WO-2018115169-A1
优先权日:2016-12-21
标题 :Method for continuous polymerisation of diene elastomer with lithium amide initiator
发明人：DESSENDIER MARIE-HÉLÈNE; DIRE CHARLOTTE; FAUVARQUE-NUYTTEN CLAIRE
权利人:MICHELIN & CIE
摘要:The invention relates to a method for continuous synthesis of a diene elastomer by means of n reactors r1 to rn, provided with an internal stirring system, assumed to be perfectly stirred, arranged in series, n ranging from 2 to 15, preferably from 2 to 9, the reactor r1 being supplied with an input solution comprising a solvent, one or more monomers, an anionic polymerisation initiator chosen among the lithium amides and a polar agent, one or more reactors r2 to rn optionally also being supplied by re-injection of a purified solution comprising solvent and/or one or more monomers and/or polar agent, the temperature of each reactor ranging from 20°C to 150°C, preferably ranging from 30°C to 120°C and being no lower than the temperature of the reactor that immediately precedes same, the temperature of the reactor rn being higher than the temperature of the reactor r1, the diene elastomer obtained having a polymolecularity index ranging from 1.1 to 1.7.

专利号:US-2004241251-A1
优先权日:2001-05-04
标 题:Random or block co-or terpolymers produced by using of metal complex catalysts
发明人：THIELE SVEN K H; MONROY VICTOR M; WILSON DAVID R
摘要:Random or block co- or terpolymers produced by using metal complex catalysts in a reaction of one conjugated diene monomer with one aromatic Random or block co- or terpolymers produced by using metomers with one aromatic α-olefin or terpolymers of one conjugated diene monomer with one aromatic α-olefin and one aliphatic α-olefin by using metal complexes comprising metals of group 3 to 10 of the Periodic System of the Elements in combination with activators and optionally a support material. More particularly the metal complexes used for the synthesis of co- or terpolymer are lanthanide metals. Even more particularly diene monomer(s) and aromatic α-olefin monomer(s) such as, but not limited to, butadiene and styrene or isoprene and styrene are copolymerized giving random or block copolymers or butadiene, styrene and isoprene are terpolymerized giving random or block terpolymers using metal complexes comprising lanthanide metals in combination with activators and optionally a support material. Preferably random co- or terpolymers are formed.

专利号:US-11525049-B2
优先权日:2017-03-29
标 题:Polar additive for the synthesis of copolymers of vinylaromatic monomer and conjugated diene monomer having high vinylaromatic and low vinyl contents
发明人：KOZAK RADOSLAW; BOGACZ ROBERT; WALENIA MALGORZATA; WEDA PAWEL
权利人:Synthos Sa; SYNTHOS DWORY 7 SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA SPOLKA JAWNA
摘要:The present invention relates to the use of N,N′,N″-substituted hexahydro-1,3,5-triazine in the anionic polymerization of conjugated diene monomer and vinylaromatic monomer. Use of this polar additive produces copolymers having both high vinylaromatic and low vinyl contents, while the blockiness of the vinylaromatic unit can be tailored.