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己二酸置于乙醇,对甲苯磺酸体系中,化学反应 8.0H,以1988 G的收率获得己二酸二乙酯
参考文献:具有陈皮香气的化合物及其制备方法和日用香精
标题:具有陈皮香气的化合物及其制备方法和日用香精
摘要:本发明涉及一种具有陈皮香气的化合物及其制备方法和日用香精.上述具有陈皮香气的化合物具有如下结构式:上述具有陈皮香气的化合物的分子量较传统的陈皮香化合物的分子量更大,且具有更好的留香性能,留香时间持久.另外,上述具有陈皮香气的化合物能够用于柑橘类香精中,提升柑橘类香精的天然感和厚重感,在香精的体香和尾香中具有非常好表现.

专利信息

专利号:US-5359016-A
优先权日:1993-03-29
标 题 :Process for the synthesis of styrene-isoprene rubber
发明人：HSU WEN-LIANG; HALASA ADEL F; MATRANA BARRY A
权利人:GOODYEAR TIRE & RUBBER
摘要:The subject invention relates to a technique for synthesizing rubbery copolymers of styrene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire tread rubber compounds. By utilizing these styrene-isoprene rubbers in tire treads, tires having improved wet skid resistance can be built without sacrificing rolling resistance or tread wear characteristics. This invention more specifically discloses a process for the synthesis of styrene-isoprene rubbers which comprises copolymerizing isoprene monomer and styrene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) an alkyl tetrahydrofurfuryl ether modifier, wherein the molar ratio of the modifier to the lithitium initiator is within the range of 2:1 to 40:1. The subject invention further discloses a process for the synthesis of styrene-isoprene rubbers which comprises copolymerizing isoprene monomer and styrene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) 2,2-ditetrahydrofurylpropane as a modifier, wherein the molar ratio of the modifier to the lithium initiator is within the range of 1:1 to 40:1.

专利号:US-3891594-A
优先权日:1972-04-07
标题:Direct synthesis of composite materials
发明人：TAYLOR LYNN J
权利人:TAYLOR LYNN J
摘要:There is disclosed an in situ process for the preparation of a composite material consisting essentially of an organic polymer or copolymer having dispersed therein an inorganic oxide or mixture of oxides, said process comprising the simultaneous or sequential synthesis of the organic polymer from at least one non-polymeric organic precursor and of the inorganic oxide or oxide mixture derived from at least one inorganic-oxide precursor.

专利号:US-3817911-A
优先权日:1972-04-07
标 题 :Direct synthesis of composite materials
发明人：TAYLOR L
权利人:TAYLOR L
摘要:THERE IS DISCLOSED AN IN SITU PROCESS FOR THE PREPARATION OF A COMPOSITE MATERIAL CONSISTING ESSENTIALLY OF AN ORGANIC POLYMER OR COPOLYMER HAVING DISPERSED THEREI AN INORGANIC OXIDE OR MIXTURE OF OXIDES, SAID PROCESS COMPRISING THE SIMULTANEOUS OR SEQUENTIAL SYNTHESIS OF THE ORGANIC POLYMER FROM AT LEAST ONE NON-POLYMERIC ORGANIC PRECUROR AND OF THE INORGANIC OXIDE OR OXIDE MIXTURE DERIVED FROM AT LEAST ONE INORGANIC-OXIDE PRECURSOR.

专利号:US-3960805-A
优先权日:1974-04-19
标 题:Direct synthesis of organic polymer-inorganic oxide composites
发明人：TAYLOR LYNN JOHNSTON
权利人:TAYLOR LYNN JOHNSTON
摘要:There is disclosed an in situ process for the preparation of a composite material consisting essentially of an organic polymer or copolymer having dispersed therein an inorganic oxide or mixture of oxides, said process comprising the simultaneous or sequential synthesis of the organic polymer from at least one non-polymeric organic precursor and of the inorganic oxide or oxide mixture derived from at least one inorganic-oxide precursor.

专利号:US-5336739-A
优先权日:1992-04-06
标题:Alkyl tetrahydrofurfuryl ethers as anionic polymerization modifier in the synthesis of rubbery polymer
发明人：HSU WEN-LIANG; HALASA ADEL F; MATRANA BARRY A
权利人:GOODYEAR TIRE & RUBBER
摘要:It has been unexpectedly discovered that various compounds, such as alkyl tetrahydrofurfuryl ethers, can be used to modify anionic polymerizations of conjugated diene monomers. These modifiers can be used to polymerize isoprene monomer into high 3,4-polyisoprene at excellent polymerization rates. This is in contrast to the modifiers such as tetramethylethylene diamine which are typically used to modify such polymerizations. This invention more specifically discloses a process for the synthesis of 3,4-polyisoprene which comprises polymerizing isoprene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) a modifier which is an alkyltetrahydrofurfuryl ether selected from the group consisting of ethyltetrahydrofurfuryl ether, propyltetrahydrofurfuryl ether, and butyltetrahydrofurfuryl ether. In the practice of this invention, the utilization of ethyltetrahydrofurfuryl ether is highly preferred since its use results in faster polymerization rates and higher vinyl contents in the resultant polymer.

专利号:US-5448003-A
优先权日:1992-04-06
标题:Synthesis of rubbery polymer using anionic polymerization modifier
发明人：HSU WEN-LIANG; HALASA ADEL F; MATRANA BARRY A
权利人:GOODYEAR TIRE & RUBBER
摘要:It has been unexpectedly discovered that various compounds, such as alkyl tetrahydrofurfuryl ethers, can be used to modify anionic polymerizations of conjugated diene monomers. These modifiers can be used to polymerize isoprene monomer into high 3,4-polyisoprene at excellent polymerization rates. This is in contrast to the modifiers such as tetramethylethylene diamine which are typically used to modify such polymerizations. This invention more specifically discloses a process for the synthesis of 3,4-polyisoprene which comprises polymerizing isoprene monomer in an organic solvent in the presence of a catalyst system which is comprised of (a) a lithium initiator and (b) an alkyltetrahydrofurfuryl ether modifier, wherein the alkyl group in the alkyltetrahydrofurfuryl ether modifier contains from 6 to about 10 carbon atoms. In the practice of this invention, the utilization of alkyltetrahydrofurfuryl ethers having alkyl groups which contain from 6 to 10 carbon atoms, such as hexyltetrahydrofurfuryl ether, is highly preferred since their use does not results in the creation of odor problems.