MONOMER RECOVERY PROCESS
    3.
    发明申请

    公开(公告)号:US20220088503A1

    公开(公告)日:2022-03-24

    申请号:US17424841

    申请日:2020-02-04

    摘要: A process for recovering monomers and solvent present in a waste stream including the steps of: (a) providing a waste feed stream containing monomers, solvent and impurities; (b) subjecting the waste feed stream of step (a) to a separation process under conditions for separating the monomers and solvent from the impurities of the waste stream; (c) recovering the monomers and solvent in one or more streams; and (d) passing the one or more of the monomer and solvent streams from step (c) to further processing.

    Storage Stable Polyol Composition for Polyurethane Elastomers
    5.
    发明申请
    Storage Stable Polyol Composition for Polyurethane Elastomers 审中-公开
    聚氨酯弹性体的储存稳定多元醇组合物

    公开(公告)号:US20160264712A1

    公开(公告)日:2016-09-15

    申请号:US15029082

    申请日:2014-11-25

    摘要: A polyurethane reaction system includes an isocyanate component having at least one polyisocyanate and an isocyanate-reactive component having a storage stable polyol component that is a single phase liquid mixture at 23° C. including a first polyether polyol and a second polyether polyol. The first polyether polyol is included in an amount from 20 wt % to 90 wt %, based on total weight of the polyol component, is a glycol based polyoxypropylene-polyoxyethylene polyether polyol having number average molecular weight from 1500 g/mol to 1975 g/mol, and has a polyoxyethylene content from 26 wt % and 34 wt % based on a total weight of the first polyether polyol. The second polyether polyol is included in an amount from 10 wt % to 80 wt %, based on total weight of the polyol component, has a number average molecular weight from 750 g/mol to 4000 g/mol, and has a melting point higher than 23° C.

    摘要翻译: 聚氨酯反应体系包括具有至少一种多异氰酸酯和异氰酸酯反应性组分的异氰酸酯组分,所述异氰酸酯组分具有储存稳定的多元醇组分,该组分为23℃的单相液体混合物,包括第一聚醚多元醇和第二聚醚多元醇。 基于多元醇组分的总重量,第一聚醚多元醇的含量为20重量%至90重量%,是数均分子量为1500g / mol至1975g / mol的二醇基聚氧丙烯 - 聚氧乙烯聚醚多元醇, 并且基于第一聚醚多元醇的总重量具有26重量%和34重量%的聚氧乙烯含量。 基于多元醇成分的总重量,第二聚醚多元醇的含量为10重量%〜80重量%,数均分子量为750g / mol〜4000g / mol,熔点越高 比23℃

    Macromer and Process for Making Polymer Polyols
    10.
    发明申请
    Macromer and Process for Making Polymer Polyols 有权
    大分子单体和制备聚合物多元醇的方法

    公开(公告)号:US20150274952A1

    公开(公告)日:2015-10-01

    申请号:US14429154

    申请日:2013-09-23

    IPC分类号: C08L25/12 C08J9/12 C08J9/00

    摘要: Polymer polyols are made by polymerizing an ethylenically unsaturated monomer in a continuous polyol phase. The polymerization is stabilized with a macromer or a pre-formed polymer made by polymerizing or copolymerizing the macromer. The macromer is a random polymer of propylene oxide and ethylene oxide in defined ratios, which also contains polymerization carbon-carbon double or triple bond. Polymer polyols made in the process exhibit little viscosity rise when blended with water. Flexible polyurethane foam made from the polymer polyol exhibits excellent hardness, have good surface characteristics and, when pigmented, exhibit good, uniform coloration.

    摘要翻译: 聚合物多元醇通过在连续多元醇相中聚合烯属不饱和单体制备。 用大分子单体或通过聚合或共聚大分子单体制备的预形成聚合物稳定聚合。 大分子单体是一定比例的环氧丙烷和环氧乙烷的无规聚合物,其还含有聚合碳 - 碳双键或三键。 当与水混合时,在该方法中制备的聚合物多元醇几乎没有粘度上升。 由聚合物多元醇制成的柔性聚氨酯泡沫体显示出优异的硬度,具有良好的表面特性,并且当着色时表现出良好的均匀着色。