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42 条记录 (耗时 0.032 秒)

    Melt processable poly(ester amide) capable of forming an anisotropic melt containing an aromatic moiety capable of forming an amide linkage
    7.
    发明授权
    Melt processable poly(ester amide) capable of forming an anisotropic melt containing an aromatic moiety capable of forming an amide linkage 失效
    能够形成含能够形成酰胺键的芳族部分的各向异性熔体的可熔融加工的聚（酯酰胺）

    公开(公告)号：US5508374A

    公开(公告)日：1996-04-16

    申请号：US487663

    申请日：1995-07-07

    申请人： Cherylyn Lee ,  Larry F. Charbonneau

    发明人： Cherylyn Lee ,  Larry F. Charbonneau

    IPC分类号： C08G69/44 ,  D01F6/82 ,  C08G63/02

    CPC分类号： C08G69/44

    摘要： A melt processable poly(ester-amide) which is capable of forming an anisotropic melt phase is provided. A poly(ester-amide) of the present invention may have recurring units of: (a) 4-hydroxybenzoyl moiety, (b) 6-oxy-2-naphthoyl moiety, (c) 4,4'-biphenol moiety, (d) terephthaloyl moiety, and (e) an aromatic moiety capable of forming an amide linkage in the proportions indicated. Preferably, the moiety capable of forming an amide linkage is derived from p-aminophenol, p-phenylenediamine, N-acetyl-p-aminophenol, etc. The resulting poly(ester-amide) is capable of undergoing melt-processing in the temperature range of from about 300.degree. to about 400.degree. C.

    摘要翻译： 提供能够形成各向异性熔融相的可熔融加工的聚（酯 - 酰胺）。 本发明的聚（酯 - 酰胺）可以具有重复单元：（a）4-羟基苯甲酰部分，（b）6-氧-2-萘甲酰基部分，（c）4,4'-联苯酚部分，（d ）对苯二酰部分，和（e）能够以所示比例形成酰胺键的芳族部分。 优选地，能够形成酰胺键的部分衍生自对氨基苯酚，对苯二胺，N-乙酰基对氨基苯酚等。所得聚（酯 - 酰胺）能够在温度范围内进行熔融加工 为约300℃至约400℃

    Preparation of aromatic copolyesters via in situ esterification with isopropenyl esters of an alkyl acid
    9.
    发明授权
    Preparation of aromatic copolyesters via in situ esterification with isopropenyl esters of an alkyl acid 失效
    通过用烷基酸的异丙烯基酯原位酯化制备芳族共聚酯

    公开(公告)号：US4395536A

    公开(公告)日：1983-07-26

    申请号：US322147

    申请日：1981-11-17

    申请人： Larry F. Charbonneau

    发明人： Larry F. Charbonneau

    IPC分类号： C08G63/06 ,  C08G63/60

    CPC分类号： C08G63/605 ,  C08G63/065

    摘要： Provided is a method for preparing aromatic copolyesters involving in situ esterification with an isopropenyl ester of an alkyl acid, e.g., isopropenyl acetate. The process comprises reacting the aromatic hydroxy monomers with an isopropenyl ester of an alkyl acid such as isopropenyl acetate in a polymerization vessel in order to esterify the hydroxy moieties, and then polymerizing the esterified hydroxy monomers with aromatic carboxylic acid monomers in the resultant esterification reaction medium to form the aromatic copolyester. Both the esterification and polymerization reactions can be effectively conducted in the same vessel without having to separate out and/or transfer the esterification products from a separate vessel as the polyester polymerization is conducted in the esterification reaction mixture. The esterification is generally carried out in the presence of an acid esterification catalyst, which is preferably neutralized upon completion of the esterification reaction with a suitable basic neutralizing agent, e.g., barium hydroxide.

    摘要翻译： 提供了一种制备芳族共聚酯的方法，其涉及用烷基酸的异丙烯基酯如乙酸异丙烯酯原位酯化。 该方法包括使芳族羟基单体与烷基酸的异丙烯基酯如乙酸异丙烯酯在聚合容器中反应以酯化羟基部分，然后在酯化反应介质中使酯化的羟基单体与芳族羧酸单体聚合 以形成芳族共聚酯。 在酯化反应混合物中进行聚酯聚合时，酯化反应和聚合反应都可以在相同的容器中有效进行，而不必从单独的容器中分离和/或转移酯化产物。 酯化反应通常在酸酯化催化剂的存在下进行，优选在用合适的碱性中和剂如氢氧化钡完成酯化反应时中和。