Process for the preparation of thermoplastic poly(hydroxy ethers)
    9.
    发明授权
    Process for the preparation of thermoplastic poly(hydroxy ethers) 失效
    制备热塑性聚(羟基醚)的方法

    公开(公告)号:US5401814A

    公开(公告)日:1995-03-28

    申请号:US135712

    申请日:1993-10-13

    IPC分类号: C08G59/62 C08G59/68 C08G65/28

    CPC分类号: C08G59/688 C08G59/621

    摘要: Poly(hydroxy ethers) are prepared by reacting a dihydric phenol with a diepoxide in the presence of a catalyst selected from the group consisting of bis(trihydrocarbylphosphoranylidene)ammonium salt, bis[tris(dihydrocarbylamino)phosphoranylidene]ammonium salt, and tetrakis[tris(dihydrocarbylamino)phosphoranylideneamino]phosphonium salt. The reaction between the dihydric phenol and the diepoxide is conducted in an ether or hydroxy ether solvent at a temperature sufficiently high to produce a poly(hydroxy ether). Polymers prepared by the new process are more highly branched than those produced by known methods.

    摘要翻译: 聚(羟基醚)通过二选苯酚与二环氧化物在选自双(三烃基亚正膦基)铵盐,双[三(二烃基氨基)亚正膦基]铵盐和四[三 二烃基氨基)正膦亚基氨基]鏻盐。 二羟基酚和二环氧化物之间的反应在足够高的温度下在醚或羟基醚溶剂中进行以产生聚(羟基醚)。 通过新方法制备的聚合物比通过已知方法制备的聚合物分枝得多。

    Epoxy resins containing phosphonium catalysts
    10.
    发明授权
    Epoxy resins containing phosphonium catalysts 失效
    含有鏻催化剂的环氧树脂

    公开(公告)号:US4933420A

    公开(公告)日:1990-06-12

    申请号:US248509

    申请日:1988-09-23

    申请人: Ha Q. Pham Loan A. Ho

    发明人: Ha Q. Pham Loan A. Ho

    IPC分类号: C08G59/42 C08G59/62 C08G59/68

    摘要: Epoxide compounds and phenolic compounds are reacted in the presence of phosphonium compounds represented by the formula .crclbar.Z'R.sup.1 R.sup.2 R.sup.3 P.sym.-Z-P.sym.R.sup.1 R.sup.2 R.sup.3 Z'.crclbar. wherein each R.sup.1, R.sup.2 and R.sup.3 is independently an aromatic group or an inertly substituted aromatic group; Z is --(C(R.sup.4).sub.2).sub.a --; each R.sup.4 is independently hydrogen or a hydrocarbyl group containing from 1 to about 20 carbon atoms; Z' is any suitable anion and a has a value of at least 4.