CAS: 2167-51-3; 4,4'-(1,4-Phenylenediisopropylidene)Bisphenol

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CAS号2948-46-1 二羟基-1,4-二异丙基苯 | CAS号108-95-2 苯酚

📜1,4-双(1-甲基-1-羟乙基)苯,苯酚置于盐酸体系中,化学反应 3.5H,以65%的收率获得α,α'-二(4-羟基苯基)-1,4-二异丙基苯
参考文献:新型对苯二酸苯并环芳基受体的合成与评价
标题:新型对苯二酸苯并环芳基受体的合成与评价
摘要:作为苯甲酸客体的潜在受体,合成了各自具有π电子富集部分和含有吡啶环的部分的新的二位环芳基主体分子.通过红外光谱,质子磁共振滴定实验和固态结构测定,探讨了潜在的分子受体与苯甲酸客体的络合作用.版权所有©2005 John Wiley&sons,Ltd.
Doi:10.1002/poc.981

专利信息

专利号:US-4404363-A
优先权日:1981-05-02
标题 :Separation of diphasic mixtures containing aromatic polyesters
发明人：FREITAG DIETER; SERINI VOLKER; GOOSSENS JOHN; BOTTENBRUCH LUDWIG; HUCKS UWE
权利人:BAYER AG
摘要:Diphasic mixtures obtained from the synthesis of aromatic polyesters by the diphasic interface process may be separated into an aqueous phase and an organic phase by the addition of selected compounds.

专利号:US-6596840-B1
优先权日:1999-07-19
标题 :Method for producing modified polycarbonates
发明人：KRATSCHMER SILKE; HUCKS UWE; BUNZEL LOTHAR
权利人:BAYER AG
摘要:A process for the synthesis of polycarbonate is disclosed. The process entails reacting in the presence of at least one phosphonium salt as catalyst, at least one diphenol, at least one carbonic acid diester, and at least one alkyl group-substituted phenol chain terminator. The chain terminator is introduced in free form or as a transesterifiable compound under the conditions of the synthesis. The polycarbonate thus produced is suitable for preparing a variety of molded articles.

专利号:US-9850345-B2
优先权日:2012-05-24
标题:Polycarbonate polyol compositions and methods
发明人：FARMER JAY J
权利人:SAUDI ARAMCO TECH CO
摘要:In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO 2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having one or more sites capable of initiating copolymerization of epoxides and CO 2 , wherein the chain transfer agent contains one or more masked hydroxyl groups. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups, a high percentage of carbonate linkages, and substantially all polycarbonate chains having hydroxyl end groups have no embedded chain transfer agent.

专利号:US-9809678-B2
优先权日:2008-09-08
标 题:Polycarbonate polyol compositions and methods
发明人：ALLEN SCOTT D; COATES GEOFFREY W; CHERIAN ANNA E; SIMONEAU CHRIS A; GRIDNEV ALEXEI A; FARMER JAY J
权利人:NOVOMER INC; SAUDI ARAMCO TECH CO
摘要:In one aspect, the present disclosure encompasses polymerization systems for the copolymerization of CO 2 and epoxides comprising 1) a catalyst including a metal coordination compound having a permanent ligand set and at least one ligand that is a polymerization initiator, and 2) a chain transfer agent having two or more sites that can initiate polymerization. In a second aspect, the present disclosure encompasses methods for the synthesis of polycarbonate polyols using the inventive polymerization systems. In a third aspect, the present disclosure encompasses polycarbonate polyol compositions characterized in that the polymer chains have a high percentage of —OH end groups and a high percentage of carbonate linkages. The compositions are further characterized in that they contain polymer chains having an embedded polyfunctional moiety linked to a plurality of individual polycarbonate chains.

专利号:US-12410280-B2
优先权日:2020-04-15
标 题:Synthesis, purification, and properties of ring-opened benzoxazine thermoplastic
发明人：ZHOU TIANLEI; YAO HAIQING; MIYAUCHI MASAHIKO
权利人:KANEKA CORP
摘要:A crosslinkable thermoplastic resin composition may include a polymer formed from the reaction between a bis-benzoxazine monomer and a bifunctional comonomer having phenol, amine, and/or thiol functional groups, wherein the polymer contains at least one crosslinkable group. A method of forming a crosslinkable thermoplastic resin composition may include reacting a bis-benzoxazine monomer and a bifunctional comonomer to form a polymer containing at least one crosslinkable group. A method of forming a cured thermoplastic resin may include curing the crosslinkable thermoplastic resin composition by applying an external stimulus.

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.