Process for manufacturing medium and high molecular weight polyesters

    公开(公告)号:US09624342B2

    公开(公告)日:2017-04-18

    申请号:US12027233

    申请日:2008-02-06

    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.

    High Block, Tack and Scrub Resistant Coating Composition
    17.
    发明申请
    High Block, Tack and Scrub Resistant Coating Composition 审中-公开
    高块,耐粘结和耐磨涂层组合物

    公开(公告)号:US20160145460A1

    公开(公告)日:2016-05-26

    申请号:US15012240

    申请日:2016-02-01

    CPC classification number: C09D133/26 C09D5/00 C09D7/80

    Abstract: The present invention is directed to a coating composition or paint comprising a multistage latex with at least first and second stages, wherein the composition or paint is substantially free of volatile organic compounds (VOC) and capable of film formation even in the absence of coalescent agents. The base paint formulation is capable of being tinted at a point-of-sale (i.e. in-store) using a colorant composition of a type and quantity required to produce a paint of desired color and finish. The paints, show improved block resistance, scrub resistance and tack resistance.

    Abstract translation: 本发明涉及包含具有至少第一和第二阶段的多级胶乳的涂料组合物或涂料,其中所述组合物或涂料基本上不含挥发性有机化合物(VOC),并且即使在不存在聚结剂的情况下也能够成膜 。 基础油漆配方能够使用生产所需颜色和油漆的油漆所需的类型和数量的着色剂组合物在销售点(即在店内)着色。 油漆,显示改善的阻力,耐擦洗性和耐粘性。

    Sour Gas Resistant Coating
    20.
    发明申请
    Sour Gas Resistant Coating 审中-公开
    耐酸性涂层

    公开(公告)号:US20160024312A1

    公开(公告)日:2016-01-28

    申请号:US14875914

    申请日:2015-10-06

    Abstract: Coating compositions that include one or more epoxy resin compositions, one or more metal-containing compound and one or more curing agents are described. The compositions can be applied to steel substrates, including steel substrates such as steel pipe to resist attack by sour gas. When applied to a substrate and cured, these coating compositions demonstrate reduced permeability to hydrogen sulfide.

    Abstract translation: 描述包括一种或多种环氧树脂组合物,一种或多种含金属化合物和一种或多种固化剂的涂料组合物。 该组合物可以应用于钢基材,包括诸如钢管的钢基材以抵抗酸性气体的侵蚀。 当施加到基材上并固化时,这些涂料组合物显示出降低的硫化氢渗透性。

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