CAS: 77-40-7; 4,4'-(Butane-2,2-Diyl)Diphenol

上下游产品

CAS号78-93-3 甲乙酮 | CAS号108-95-2 苯酚 | CAS号4461-41-0 2-氯-2-丁烯 | CAS号2211-70-3 2-chlorobut-1-ene | CAS号99-71-8 4-仲丁基苯酚 | CAS号17255-98-0 4-but-2-en-2-yl... | CAS号108-95-2 苯酚 | CAS号99-28-5 2,6-二溴-4-硝基苯酚 | CAS号89-72-5 邻仲丁基苯酚 | CAS号2316-50-9 Phenol,2-bromo-... | CAS号94315-49-8 4-[2-(4-hydroxy... | CAS号6292-20-2 Cyclohexanol,4-... | CAS号108-93-0 环己醇

专利信息

专利号:US-4529823-A
优先权日:1984-04-02
标 题 :Purification of bisphenol-A
发明人：MENDIRATTA ASHOK K
权利人:GEN ELECTRIC
摘要:This invention is directed to a method of purifying crude bisphenol-A by crystallization with agitation in phenolic water having less than 30 weight percent phenol. The crystals obtained have a morphology similar to that of aqueous crystallized bisphenol-A with a significantly higher degree of purity than crystals obtained from an aqueous crystallization. The use of an organic solvent, foreign to the bisphenol-A synthesis reaction, for either washing or crystallization can be avoided and only small quantities of phenol and water are required when providing pure bisphenol-A for polycarbonate synthesis by this process.

专利号:WO-2023038267-A1
优先权日:2021-09-13
标 题 :Monomer composition for synthesis of recycled plastic, method for preparing same, and recycled plastic and molded product using same

专利号:US-2023093326-A1
优先权日:2020-06-19
标 题 :Polyester Carbonates on the Basis of Cycloaliphatic Diacids, 1,4:3,6-Dianhydrohexitol and Specific Amounts of an Additional Aliphatic Dihydroxy Compound
发明人：MEYER ALEXANDER; SCHULZ LUKAS FABIAN; PFINGST THOMAS
权利人:COVESTRO DEUTSCHLAND AG
摘要:The present invention relates to a process for preparing a polyester carbonate on the basis of cycloaliphatic diacids and at least one 1,4:3,6-dianhydrohexitol and at least one additional aliphatic dihydroxy compound, to the polyester carbonate prepared according to the process and to a molding compound and a molding body containing the polyester carbonate. The process according to the invention is a direct synthesis, in which all structural elements forming the subsequent polyester carbonate are present as monomers already in the first process step. It is characterized in that a specific ratio of 1,4:3,6-dianhydrohexitol and the at least one additional aliphatic dihydroxy compound is advantageous.

专利号:US-4033982-A
优先权日:1974-10-16
标 题 :3,4,5-Trithiapolycyclo compounds and derivatives
发明人：HAY ALLAN S
权利人:GEN ELECTRIC
摘要:A process for the preparation of 3,4,5-trithiapolycyclo compounds is described which comprises the reaction of sulfur with bicyclo[2.2.1]hept-2-ene compounds carried out in the presence of (1) a phenol, and (2) a base. The process can be carried out either in the absence or presence of an inert organic solvent. The trithiapolycyclic compounds produced by this process are useful as monomers in the synthesis of polymers which can be employed as additives for lubricants, to produce effective coatings on solid substrates, or to produce fibers and films.

专利号:EP-3169658-A1
优先权日:2014-07-15
标题 :Synthesis of bisphenols

专利号:US-7674934-B2
优先权日:2004-08-05
标题:Stabilizers for use in NVP synthesis
发明人：HOEFER FRANK; BRAND ALEXANDRA; BOETTCHER ARND; BAUMANN KATRIN; VOGELSANG REGINA
权利人:BASF AG
摘要:A process for preparing N-alkenyl compounds by reacting the corresponding NH compounds with alkynes in the liquid phase in the presence of a catalyst, wherein the reaction is carried out in the presence of at least one stabilizer, and the use of stabilizers for increasing the selectivity in a process for preparing N-alkenyl compounds by reacting the corresponding NH compounds with alkynes in the liquid phase in the presence of a catalyst.