PROCESS FOR MANUFACTURING MEDIUM AND HIGH MOLECULAR WEIGHT POLYESTERS
    2.
    发明申请
    PROCESS FOR MANUFACTURING MEDIUM AND HIGH MOLECULAR WEIGHT POLYESTERS 审中-公开
    制造中高分子量聚酯的方法

    公开(公告)号:WO2009100235A1

    公开(公告)日:2009-08-13

    申请号:PCT/US2009/033241

    申请日:2009-02-05

    CPC classification number: C08G63/81

    Abstract: Medium and high molecular weight polyester polymers are prepared in syrup form from an ester oligomer. The oligomer is converted to the polymer by polycondensation at elevated pressure and elevated temperature in a nonreactive carrier capable of forming an azeotrope with water. The ester oligomerization or polycondensation reactions desirably are monitored using a non-viscometric technique. The process has a rapid cycle time. The syrup contains the polymer and nonreactive carrier, and may more conveniently be used to make initially non-solid products such as polyester coatings than is the case when employing pelletized solid polyester resins.

    Abstract translation: 中等和高分子量聚酯聚合物由糖浆形式由酯低聚物制备。 通过在能与水形成共沸物的非反应性载体中在升高的压力和升高的温度下缩聚将低聚物转化成聚合物。 酯低聚或缩聚反应期望使用非粘度技术监测。 该过程具有快速的循环时间。 糖浆含有聚合物和非反应性载体,与使用造粒的固体聚酯树脂的情况相比,可以更方便地用于制备最初的非固体产品如聚酯涂层。

    BLOCKED ISOCYANATE CROSSLINKER SOLUTION
    9.
    发明申请
    BLOCKED ISOCYANATE CROSSLINKER SOLUTION 审中-公开
    阻塞异氰酸酯交联剂溶液

    公开(公告)号:WO2005058998A1

    公开(公告)日:2005-06-30

    申请号:PCT/US2004/041361

    申请日:2004-12-10

    Abstract: A low viscosity blocked isocyanate solution can be made by reacting together a polymeric isocyanato compound and propylene glycol, or a polymeric primary or secondary amine and propyl carbonate. The resulting beta-hydroxypropyl urethane polymer can be combined with propylene glycol monomethyl ether as a reducing solvent to form a pourable high-solids solution with good flow properties at room temperature. The solution has lower viscosity than is obtained using ethylene glycol as a blocking agent or using several non-HAPS reducing solvents that are similar to propylene glycol monomethyl ether. The solution can readily be combined with electrodepositable paint ingredients to form a curable coating composition.

    Abstract translation: 低粘度封端的异氰酸酯溶液可以通过使聚合异氰酸酯化合物和丙二醇,或聚合的伯或仲胺和碳酸丙酯反应而制备。 所得的β-羟丙基氨基甲酸酯聚合物可与丙二醇单甲醚作为还原溶剂组合以形成在室温下具有良好流动性的可倾倒的高固含量溶液。 该溶液的粘度低于使用乙二醇作为封闭剂或使用几种类似于丙二醇单甲醚的非HAPS还原溶剂。 该溶液可以容易地与可电沉积的涂料成分组合以形成可固化的涂料组合物。

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