利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

731 条记录 (耗时 0.026 秒)

    SPECIFIC METHOD FOR PREPARING BIOBASED POLYESTERS
    43.
    发明申请
    SPECIFIC METHOD FOR PREPARING BIOBASED POLYESTERS 有权

    公开(公告)号：US20170306087A1

    公开(公告)日：2017-10-26

    申请号：US15509498

    申请日：2015-09-10

    申请人： Arkema France

    发明人： Frank Cogordan ,  Herve W. Ozeray ,  Alain F. Riondel

    IPC分类号： C08G63/91 ,  C08G63/85 ,  C08G63/672

    CPC分类号： C08G63/916 ,  C08G63/668 ,  C08G63/672 ,  C08G63/85

    摘要： The present invention relates to a method for preparing a linear or branched hydroxylated and/or carboxylated polyester resin that is free of unsaturated fatty acids, comprising reacting an acid component with an alcohol component, said acid component comprising at least one C4 to C6 polycarboxylic acid or anhydride, and at least one C8 to C54 polycarboxylic acid or anhydride, and said alcohol component comprising at least one biobased polyol having a functionality of at least 2 bearing a 1,4:3,6-dianhydrohexitol unit, and at least one of two polyols b2) and b3).

    A Method for Stabilizing a Condensed Phase Composition Including a Cyclic Ester in a Process of Manufacturing a Polyester or of Lactide
    45.
    发明申请
    A Method for Stabilizing a Condensed Phase Composition Including a Cyclic Ester in a Process of Manufacturing a Polyester or of Lactide 审中-公开

    公开(公告)号：US20170240700A1

    公开(公告)日：2017-08-24

    申请号：US15510917

    申请日：2015-08-19

    申请人： Sulzer Chemtech AG

    发明人： Liborio Ivano Costa ,  Hans-Peter Brack ,  Francesca Tancini ,  Yingchuan Yu

    IPC分类号： C08G63/85 ,  C08G63/08

    CPC分类号： C08G63/78 ,  C08G63/08 ,  C08G63/85 ,  C08G63/90

    摘要： A method for stabilizing a condensed phase composition in a process of manufacturing a polyester from cyclic ester monomer comprising the steps of devolatilizing a reaction mixture, which contains i) at least one polymerizable cyclic ester, ii) at least one catalyst and optionally at least one initiator, to produce a vapor stream and a molten residue, wherein the vapor stream includes mainly i) the at least one polymerizable cyclic ester and ii) the at least one catalyst and/or the at least one initiator and/or a reaction product or a residue of the at least one catalyst and/or the at least one initiator and condensing the vapor stream to form the condensed phase composition, wherein at least one polymerization inhibitor is added as stabilizer to the reaction mixture and/or to the condensed phase composition in an amount so that the degree of conversion of the polymerizable cyclic ester in the condensed phase composition is not more than 15%, wherein the degree of conversion is 100▪ (c0−CF)/c0, wherein c0 is the initial concentration of the cyclic ester in the condensed phase composition obtained by the condensation of the vapor stream and CF is the concentration of the cyclic ester in the condensed phase composition after addition of 150 ppm of tin octoate as catalyst and of 100 mmol/kg of ethyl-hexanol as initiator to the condensed phase composition and a subsequent heat treatment of condensed phase composition under inert atmosphere conditions for 12 hours at 160° C.

    METHOD FOR SYNTHESIZING POLY(BUTYLENE ADIPATE-CO-TEREPHTHALATE)
    46.
    发明申请
    METHOD FOR SYNTHESIZING POLY(BUTYLENE ADIPATE-CO-TEREPHTHALATE) 有权
    用于合成聚（丁二酸 - 三 - 庚酸）的方法

    公开(公告)号：US20160376403A1

    公开(公告)日：2016-12-29

    申请号：US15263322

    申请日：2016-09-12

    申请人： Nanjing University

    发明人： Hong LI ,  Quanxing ZHANG ,  Xiangqian SUN ,  Yunlong XU ,  Wei HUANG ,  Aimin LI

    IPC分类号： C08G63/87 ,  C08G63/85 ,  C08G63/80

    CPC分类号： C08G63/87 ,  C08G63/183 ,  C08G63/80 ,  C08G63/85

    摘要： A method for synthesizing poly(butylene adipate-co-terephthalate) by combination of melt and solid state polycondensation using an organic guanidine as a main catalyst. The ternary catalyst system includes a main catalyst, a first cocatalyst, and a second cocatalyst. The main catalyst is organic guanidine; the first cocatalyst is titanate ester or zirconate ester; and the second cocatalyst is metallic oxide. The method includes: 1) adding 1,4-butanediol (BDO), adipic acid (AA), terephthalic acid (TA), and a ternary catalyst system to a reaction still; conducting an oligo-polycondensation to yield a oligomer having the weight average molecular weight (Mw) of between 3.0×103 and 4.0×103; allowing the oligomer to perform a melt polycondensation (MP) to yield a prepolymer with medium Mw of between 1.5×104 and 3.0×104; and 2) crushing the solid prepolymer into granules of 30-40 meshes, and then allowing the granules to undergo solid state polycondensation to yield the final PBAT product.

    摘要翻译： 使用有机胍作为主要催化剂，通过熔融和固态缩聚的组合来合成聚（丁二酸 - 对苯二甲酸丁二醇酯）的方法。 三元催化剂体系包括主催化剂，第一助催化剂和第二助催化剂。 主要催化剂为有机胍; 第一助催化剂是钛酸酯或锆酸酯; 第二助催化剂是金属氧化物。 该方法包括：1）将1,4-丁二醇（BDO），己二酸（AA），对苯二甲酸（TA）和三元催化剂体系加入反应釜中; 进行低聚缩聚，得到重均分子量（Mw）为3.0×10 3〜4.0×10 3的低聚物; 允许低聚物进行熔融缩聚（MP）以产生中等Mw为1.5×10 4和3.0×10 4之间的预聚物; 和2）将固体预聚物粉碎成30-40目的颗粒，然后使颗粒进行固态缩聚以产生最终的PBAT产物。