CAS: 68-36-0; 1,4-Bis(Trichloromethyl)Benzene

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CAS号106-42-3 对二甲苯 | CAS号104-82-5 对甲基氯苄 | CAS号50-00-0 甲醛 | CAS号108-88-3 甲苯 | CAS号433-19-2 对二三氟甲苯 | CAS号7782-50-5 氯气 | CAS号320-55-8 1,4-二氯-2,5-双三氟甲基苯 | CAS号14815-86-2 Benzoyl chlorid... | CAS号433-19-2 对二三氟甲苯 | CAS号1962-74-9 Terephthalic ac... | CAS号2142-29-2 p-Xylene, .alph... | CAS号1818-96-8 1,4-Benzenedica... | CAS号18699-48-4 对苯二甲酸二异丁酯 | CAS号636-09-9 对苯二甲酸二乙酯 | CAS号13947-94-9 1-(氯二氟甲基)-4-(三氟甲基)苯 | CAS号2629-68-7 1,4-双[氯(二氟)甲基]苯

📜对二三氟甲苯置于三氯化铝体系中,化学反应生成 1,4-双(三氯甲基)苯
参考文献:Malichenko,B.F. Et Al.,Journal Of General Chemistry Of The Ussr,1967,Vol. 37,P. 1544-1547
标题:Malichenko,B.F. Et Al.,Journal Of General Chemistry Of The Ussr,1967,Vol. 37,P. 1544-1547

专利信息

专利号:US-6150499-A
优先权日:1998-01-06
标 题:Process for preparation of TFPX-dichloride
发明人：DOLBIER JR WILLIAM R; DUAN JIANXIN
权利人:SPECIALTY COATING SYSTEMS INC
摘要:A method for the synthesis of TFPX-dichloride is disclosed. The method involves reacting hexachloro-p-xylene with anhydrous HF in an inert organic solvent. The reaction is advantageous in that it produces relatively high yields of TFPX-dichloride, provides little waste, and is carried out as a simple, one-step process.

专利号:US-5677399-A
优先权日:1996-11-07
标题:Synthesis of macrocyclic polymers with group IIA and IIB metal cyclic organometallic initiators
发明人：HALL JAMES E
权利人:BRIDGESTONE CORP
摘要:The invention is a practical process for anionically synthesizing commercially significant quantities of macrocyclic polymers from polar and/or non-polar monomers by using Group IIA and IIB metal cyclic organometallic initiators. Activation of the ring metal atom results in anionic polymerization of the monomers by addition into the initiator ring at the bonds between the atom and its two adjacent carbon atoms, the metal atom acting as a bridge between the two living ends of the propagating chain. Coupling of the cyclic polymer living ends by coupling agents produces macrocyclic polymers that are stable in air and moisture and that exhibit desirable properties, such as low viscosities at high molecular weights. Such macrocyclic polymers provide enhanced polymer processability during molding, extruding and the forming of films. Macrocyclic polymers terminated with coupling agents that also provide functional groups may be compounded to produce vulcanizable elastomeric compounds and articles that exhibit reduced hysteresis properties.

专利号:US-6992231-B2
优先权日:2003-12-30
标 题 :Method for the preparation of α,α, α′,α′-tetrachloro-p-xylene
发明人：JONG SHEAN-JENG; LIN CHUN-HSU; SHIH MING-TE; CHANG CHUNG-CHIEN
权利人:CHUNG SHAN INST OF SCIENCE
摘要:A synthesis method of α,α,α′,α′-tetrachloro-p-xylene is disclosed. The method includes reacting terephthaldicarboxaldehyde with a mixture of SOCl 2 and dimethylformamide (DMF) to obtain a product mixture containing α,α,α′,α′-tetrachloro-p-xylene as a major product and 4-dichloromethyl benzaldehyde as a side product, which can be separated by silica column chromatography.

专利号:US-5422416-A
优先权日:1993-06-30
标题 :Process for the synthesis of polybenzazole polymers
发明人：SO YING H
权利人:DOW CHEMICAL CO
摘要:Described herein is a process for synthesizing polybenzazole polymers comprising: (a) contacting a bis(trihalomethyl) organic compound with a polyphosphoric acid under reaction conditions sufficient to convert at least about 25 mole percent of the trihalomethyl groups present to carboxylic acid or carboxylate groups, forming a reaction mixture thereby; and (b) contacting the reaction mixture with an aromatic compound having two o-amino-basic moieties under reaction conditions sufficient to form a polybenzazole polymer.

专利号:US-5936029-A
优先权日:1996-11-07
标 题:Macrocyclic polymers having low hysteresis compounded properties
发明人：HALL JAMES E
权利人:BRIDGESTONE CORP
摘要:The present invention provides a method of anionic synthesis of stable macrocyclic polymers that are compounded to form vulcanizable elastomeric compounds exhibiting reduced hysteresis properties. Cyclic organometallic compounds containing divalent metal atoms of Groups IIA and IIB of the Periodic System are employed as initiators of anionic polymerization of conjugated diene, vinyl aromatic and/or triene monomers. Coupling of the living ends of the resulting macrocyclic polymers or copolymers with a coupling agent or a coupling agent that is also a functionalizing agent results in stable macrocyclic polymers with improved hysteresis properties.

专利号:US-5700888-A
优先权日:1996-11-07
标 题 :Synthesis of macrocyclic polymers having low hysteresis compounded properties