CAS: 4286-23-1; 4-(Prop-1-En-2-yl)Phenol

上下游产品

CAS号19546-14-6 2-tert-butyl-4-... | CAS号123-31-9 对苯二酚 | CAS号14151-63-4 4-[2-(4-羟基苯基)丙烷... | CAS号837-11-6 4-[2-(4-aminoph... | CAS号53718-26-6 1,1,3,3-tetrame... | CAS号5026-12-0 2'-羟基-2,4,4-三甲基黄烷 | CAS号63661-69-8 4-(2,4,4-trimet...

专利信息

专利号:US-4766254-A
优先权日:1987-10-05
标题 :Method for maximizing yield and purity of bisphenol A
发明人：FALER GARY R; CIPULLO MICHAEL J
权利人:GEN ELECTRIC
摘要:Product losses and color formation are sometimes encountered in the synthesis of bisphenol A from phenol and acetone in the presence of a cation exchange resin, particularly in the crude product stream from which bisphenol A has been separated via its phenol adduct. Such losses are suppressed and the crude product stream stabilized and decolorized by contact with an anion exchange resin.

专利号:US-6545187-B1
优先权日:2001-09-19
标 题 :Production of low-particulate bisphenol and use thereof in the manufacturing of polycarbonate
发明人：KISSINGER GAYLORD MICHAEL; CHEN FANG CHRISTINE; BLUBAUGH JAMES CRISTOPHER; NANCE DARLENE HOPE; STOKES EDWARD BRITTAIN; ORDONEZ JUAN RODRIGUEZ; QUINTANA JOSE M
权利人:GEN ELECTRIC
摘要:Low-particulate dihydric aromatic compounds such as bisphenol-A that can be used in the synthesis of low-particulate polycarbonates are prepared by introducing into a desorber column containing a non-aggregate packing material an adduct of bisphenol and phenol and optionally a stripping gas. The column is maintained at an operating temperature that is sufficiently high and an operating pressure that is sufficiently low such that the adduct is distilled. The stream of phenol and the stripping gas is recovered from the top of the column. A second stream containing bisphenol that is substantially free of added particulate matter is recovered from the bottom of the column. This purified stream of bisphenol-A can further be used in a method of producing optical-grade polycarbonate.

专利号:US-6255424-B1
优先权日:1997-11-25
标 题:Dendritic polymers and convergent method of synthesis
发明人：KNAUSS DANIEL M
权利人:COLORADO SCHOOL OF MINES
摘要:A convergent process for synthesizing dendritic polymers typically having an average of three or more generations of branching and a narrow polydispersity. Precursor segments with living ends are coupled via a coupling agent to form branched units, each unit having a single living end. Further reaction with the coupling agent results in formation of a dendritic structure. Reaction of the coupling agent is controlled, such as by slow addition to the reaction mixture over an extended time, to promote development of the dendritic structure. The coupling agent typically has at least two functional groups capable of reacting with the living ends in the reaction mixture. One of the groups is capable of reacting with a living end in an addition reaction such as a vinyl addition, ring opening, or group transfer reaction. Optionally, a monomer can be added with the coupling agent to form longer branches. The structures may be terminated with a suitable functional group or with a linear polymer chain. One or more of the dendritic structures may be incorporated into a larger molecule.

专利号:US-5919990-A
优先权日:1996-10-15
标题:Reclamation of bisphenol tars as feedstock in the synthesis of aminophenylhydroxphenylalkanes
发明人：LIKIBI PARFAIT J M
权利人:GEN ELECTRIC
摘要:The disclosure is of a process for recovering valuable by-products of the condensation of phenol and a ketone from a mother liquor obtained for example upon crystallization of a 1:1 adduct of phenol and bisphenol, said mother liquor containing phenol, bisphenol, isomers, contaminant by-products of the condensation reaction of phenol with the ketone and acidic impurities. The mother liquor is distilled/evaporated leaving a tarry residue, which is the feedstock for the process of the invention. The recovery comprises heating the feedstock with proportions of an arylamine salt, to extract the bisphenol-A values as aminophenylhydroxylphenyl-alkanes.

专利号:EP-0356070-A1
优先权日:1988-08-15
标题 :Synthesis of 4-acetoxystyrene oxide and related compounds
发明人：ASLAM MOHAMMAD
权利人:HOECHST CELANESE CORP
摘要:A method is provided of producing 4-acetoxystyrene oxide and substituted 4-acetoxystyrene oxides wherein at least one of the ring hydrogen atoms is substituted with a Câ‚? to Câ‚?â‚€ alkyl or alkoxy, amino, halogen or nitro, wherein 4-acetoxystyrene or the corresponding substituted 4-acetoxystyrene is epoxided with peracetic acid containing no more than a trace of a mineral acid or water. The invention also includes, as new compositions of matter, 3,5-dimethyl-4-acetoxystyrene oxide and 3,5-dibromo-4-acetoxystyrene oxide.

专利号:US-4538002-A
优先权日:1984-09-10
标 题:Process for the production of hydroxyanisole and alkylated hydroxyanisoles
发明人：COLVIN HOWARD A; MUSE JR JOEL; HOLLINGSHEAD WILLIAM S
权利人:GOODYEAR TIRE & RUBBER
摘要:There is disclosed a process for the production of alkylated hydroxyanisoles which consists of dehydrogenating para-isopropylphenol to para-isopropenylphenol which is then reacted with a methylating agent to yield para-isopropenylanisole which is then treated with acidic hydrogen peroxide to yield para-hydroxyanisole which is then treated with an alkylating agent to yield the alkylated hydroxyanisole. The process of this invention is especially useful for the synthesis of the food preservative butylated hydroxyanisole (BHA).