CAS: 5384-21-4; 4,4'-Methylenebis(2,6-Dimethylphenol)

上下游产品

CAS号50-00-0 甲醛 | CAS号576-26-1 2,6-二甲基苯酚 | CAS号527-60-6 2,4,6-三甲酚 | CAS号4397-14-2 4-(羟甲基)-2,6-二甲基苯酚 | CAS号107-18-6 烯丙醇 | CAS号95-48-7 邻甲酚 | CAS号45952-56-5 3,5-dimethyl-4-... | CAS号7205-91-6 氯甲基苯硫醚 | CAS号2423-71-4 2,6-二甲基-4-硝基苯酚 | CAS号527-61-7 2,6-二甲基对苯醌 | CAS号2786-80-3 2,6-dimethyl-4-... | CAS号1125-51-5 3,4-dibromo-2,6... | CAS号65962-45-0 4-[(4-amino-3,5... | CAS号59079-37-7 4-[(4-hydroxy-3...

📜2,4,6-三甲酚置于盐酸,Potassium Nitrososulfonate,Sodium Acetate体系中,用 丙酮 作为反应溶剂,化学反应生成 4,4'-亚甲基双(2,6-二甲苯酚)
参考文献:Magnusson,R.,Acta Chemica Scandinavica (1947),1964,Vol. 18,P. 759-768
标题:Magnusson,R.,Acta Chemica Scandinavica (1947),1964,Vol. 18,P. 759-768

专利信息

专利号:US-8394912-B2
优先权日:2009-12-22
标 题 :Process and apparatus for the preparation of polycarbonate
发明人：DOEBERT FRANK; STREMMEL ANDREAS; BIEDRON CHRISTOPH; LAUE STEPHAN; RECHNER JOHANN; HAGEN TORSTEN; BRUYNSEELS FRANK; QUAEYHAEGENS FRANK; DECLOEDT JOHAN; VAN DORST PAUL; ARNDT UWE; EYNDE JOHAN VANDEN; TRACHT URSULA; KOENIG THOMAS; LIESENFELDER ULRICH
权利人:DOEBERT FRANK; STREMMEL ANDREAS; BIEDRON CHRISTOPH; LAUE STEPHAN; RECHNER JOHANN; HAGEN TORSTEN; BRUYNSEELS FRANK; QUAEYHAEGENS FRANK; DECLOEDT JOHAN; VAN DORST PAUL; ARNDT UWE; EYNDE JOHAN VANDEN; TRACHT URSULA; KOENIG THOMAS; LIESENFELDER ULRICH; BAYER MATERIALSCIENCE AG
摘要:The invention relates to a process for the pretreatment of material surfaces in order to minimize the interaction between polycarbonate and metal and, in the processing and synthesis of polycarbonate, to obtain a high-quality polymer which in particular does not become discolored and is free of insoluble constituents.

专利号:US-8309655-B2
优先权日:2009-12-22
标题 :Methods for the preparation of a poly(arylene ether) polysiloxane multiblock copolymer, multiblock copolymers produced thereby, and associated compositions and articles
发明人：KAMALAKARAN RADHA; SRINIVASAN VEERARAGHAVAN; CHOWDHURY RAJESH; KARAMBELKAR VIVEK VASANT
权利人:KAMALAKARAN RADHA; SRINIVASAN VEERARAGHAVAN; CHOWDHURY RAJESH; KARAMBELKAR VIVEK VASANT; SABIC INNOVATIVE PLASTICS IP
摘要:A poly(arylene ether)-polysiloxane multiblock copolymer is prepared by the reaction of a hydroxy-diterminated poly(arylene ether), a hydroxyaryl-diterminated polysiloxane, and an aromatic diacid chloride. This synthesis overcomes disadvantages of known syntheses of poly(arylene ether)-polysiloxane block copolymers. The poly(arylene ether)-polysiloxane multiblock copolymer is useful for improving the melt processability of poly(arylene ether) compositions.

专利号:US-4338429-A
优先权日:1979-07-13
标 题 :Process for working up polycarbonates
发明人：SERINI VOLKER; GOOSSENS JOHN; BOTTENBRUCH LUDWIG; FREITAG DIETER
权利人:BAYER AG
摘要:The present invention relates to a process for working up alkaline two-phase mixtures which have been obtained in the synthesis of polycarbonates by the two-phase boundary process, characterized in that for the separation of the alkaline two-phase mixture into an organic phase and an aqueous phase, the mixture is supplied with shearing energy and/or added are one or more cationic emulsifying agents and/or dispersing agents and/or in that, for the separation of the acidified two-phase mixture into an organic phase and an aqueous phase, the mixture is supplied with shearing energy and/or added are one or more cationic emulsifying agents and/or dispersing agents and/or in that the organic phase which was separated off after the acidification is washed with water to which one or more water-soluble, organic anionic compounds have been added.

专利号:US-6716933-B2
优先权日:2001-07-19
标题:Working up of polymer synthesis solutions
发明人：ALEWELT WOLFGANG; EBERT WOLFGANG; FRITZ THOMAS; JAHN DIRK; WESTERNACHER STEFAN; BRUYNSEELS FRANK; RECHNER JOHANN
权利人:BAYER AG
摘要:The present invention relates to a process for working up solutions of polymers in organic solvents contaminated by alkaline constituents, using homogeneously soluble acids, especially by the introduction of an acid gas, and subsequent washing, and to the polymers so obtainable, which are distinguished by the fact that, on treatment with moist heat (sterilisation), only few defects caused by decomposition are formed, to the use thereof in the production of extrudates and molded specimen, and to the extrudates and molded specimen produced from those polymers themselves.

专利号:CA-1215395-A
优先权日:1983-05-19
标题:Synthesis of bis (4-hydroxy-dialkylphenyl) sulfide

专利号:US-12043573-B2
优先权日:2011-06-17
标题:Adhesion promoters and gel-modifiers for olefin metathesis compositions
发明人：WANG LI-SHENG; STEPHEN ANTHONY R; BOOTHE PAUL W; SCHULZE TESSA; GIARDELLO MICHAEL A; TRIMMER MARK S; CRUCE CHRISTOPHER J; MOTAMEDI FARSHAD J; EDGECOMBE BRIAN
权利人:MATERIA INC
摘要:This invention relates to compositions and methods for improving the adhesion of resin compositions to substrate materials, pre-treating substrate materials to improve the adhesion of resin compositions to the substrate materials, and/or controlling gel formation of resin compositions. More particularly, the invention relates to compositions and methods for improving the adhesion of ring opening metathesis polymerization (ROMP) compositions to substrate materials using adhesion promoters containing isocyanate groups in a resin composition. The invention also relates to methods for improving the adhesion of resin compositions to substrate materials by pre-treating substrate materials with adhesion promoters containing isocyanate groups. The invention further relates to a method of providing a gel-modified ROMP composition, in which a hydroperoxide is added to a ROMP polymerizable resin composition in order to control gel formation of the polymerizing resin. An improved ROMP composition is further disclosed, comprising a cyclic olefin, a ROMP metathesis catalyst, an adhesion promoter, and an added hydroperoxide gel modifier. The polymer products produced via ROMP reactions of the invention may be utilized for a wide range of materials and composite applications. The invention has utility in the fields of catalysis, organic synthesis, and polymer and materials chemistry and manufacture.