Method for producing tetrahydrofuran-copolymer
    1.
    发明专利
    Method for producing tetrahydrofuran-copolymer 审中-公开
    生产四氢呋喃共聚物的方法

    公开(公告)号:JP2005179673A

    公开(公告)日:2005-07-07

    申请号:JP2004363611

    申请日:2004-12-15

    CPC classification number: C08G65/20 C08G65/34

    Abstract: PROBLEM TO BE SOLVED: To provide a method for copolymerizing THF with an α, ω-diol in the presence of heteropolyacid, more economically, at a higher polymerization conversion, and more accurately in control of average-molecular weight.
    SOLUTION: The method for continuously producing tetrahydrofuran-copolymer comprises copolymerizing tetrahydrofuran with an α, ω-diol in a reaction cascade in the presence of a heteropolyacid and a telogen, wherein the telogen and/or the α, ω-diol are added in the first reactor of the cascade and water is distilled away from at least one reactor to outside the polymerization reaction.
    COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 待解决的问题:为了提供在杂多酸存在下,更经济地,更高的聚合转化率,更准确地控制平均分子量的THF与THF,THF的共聚方法。 解决方案:连续生产四氢呋喃共聚物的方法包括在杂多酸和脱氨基的存在下,在反应级联中使四氢呋喃与α,ω-二醇共聚,其中前体和/或α,ω-二醇是 加入到级联的第一反应器中,并将水从至少一个反应器蒸馏除去聚合反应。 版权所有(C)2005,JPO&NCIPI

    METHOD FOR THE PRODUCTION OF TETRAHYDROFURAN COPOLYMERS
    4.
    发明申请
    METHOD FOR THE PRODUCTION OF TETRAHYDROFURAN COPOLYMERS 审中-公开
    用于生产四氢呋喃的共聚物

    公开(公告)号:WO2004087787A3

    公开(公告)日:2005-01-06

    申请号:PCT/EP2004003345

    申请日:2004-03-30

    CPC classification number: C08G65/20 C08G2650/08 C08G2650/68

    Abstract: The invention relates to a method for single-step production of polyoxyalkylene glycols by copolymerization of THF and neopentyl glycol in the presence of a heteropoly acid, characterized in that the overall amount of all impurities of general formula (I), wherein R and R represent hydrogen when R is an oxyformyl or isopropionate radical, R represents hydrogen and R represents hydroxy when R is an isopropyl radical and R represents hydrogen when R and R together represent an OCH2-C(CH3)-CH2 radical, in the neopentyl glycol is less than 1000 ppm.

    Abstract translation: 本发明是一种用于单级制备聚氧化烯二醇的通过THF和在杂多酸的存在下的新戊二醇的共聚发现,其特点是在一个过程,在通式(I)的所有杂质的总量,其中R <1>和R <2 意味着>氢,当R <3>是Oxyformyl-或Isopropionatrest,R <2>的羟基<1>是氢并且R,当R <3>表示异丙基团和R <1>是氢,当R <2> 且R <3>一起形成-OCH 2 C(CH 3)-CH 2残基,新戊基二醇是小于1000ppm。

    5.
    发明专利
    未知

    公开(公告)号:DE50303129D1

    公开(公告)日:2006-06-01

    申请号:DE50303129

    申请日:2003-09-04

    Applicant: BASF AG

    Abstract: Process for preparation of mono- or diesters of tetrahydrofuran homo- or copolymer by polymerisation of tetrahydrofuran in the presence of at least one telogen and/or comonomers using an acid catalyst where the polymerisation reactor is started with a mixture of polytetrahydrofuran, its mono- or diester and /or tetrahydrofuran copolymer, tetrahydrofuran, optionally a copolymer and at least one carboxylic acid and/or a carboxylic acid anhydride is new.

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