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    Anhydrous routes to highly processable covalent network polymers and blends
    1.
    发明授权
    Anhydrous routes to highly processable covalent network polymers and blends 有权

    公开(公告)号：US11530288B2

    公开(公告)日：2022-12-20

    申请号：US16635710

    申请日：2019-09-06

    申请人： Mallinda

    发明人： Philip Taynton ,  Yingdong Luo ,  Heather Rubin ,  Denis Kissounko ,  Samuel Loob ,  Sarah Sadowski

    IPC分类号： C08G12/06 ,  B29C70/28 ,  C08J5/18 ,  C08L63/00 ,  C08J3/24 ,  C08L61/20

    摘要： The present invention generally relates to covalent network polymers prepared from an imine-linked oligomer and an independent crosslinker comprising reactive moieties selected from the group consisting of epoxy, isocyanate, bismaleimide, sulfide, polyurethane, anhydride, polyester and combinations thereof. The covalent network polymers disclosed herein are advantageously made by anhydrous reactions, which enables the highest known glass transition temperatures to date for this class of materials. Further, the disclosed covalent network polymers can be formed in continuous processes, such as additive manufacturing processes that produce three-dimensional objects or roll-to-roll processes that produce covalent network polymer films or fully cured prepreg in various size formats.

    Method of producing low viscosity phenol-modified aromatic hydrocarbon formaldehyde resin
    2.
    发明授权
    Method of producing low viscosity phenol-modified aromatic hydrocarbon formaldehyde resin 有权
    生产低粘度苯酚改性芳烃甲醛树脂的方法

    公开(公告)号：US07772331B2

    公开(公告)日：2010-08-10

    申请号：US11697315

    申请日：2007-04-06

    申请人： Masashi Ogiwara ,  Seiji Kita

    发明人： Masashi Ogiwara ,  Seiji Kita

    IPC分类号： C08G4/00 ,  C08G10/04 ,  C08G14/02 ,  C08G16/04 ,  C08G8/04 ,  C08L61/20

    CPC分类号： C08G8/28 ,  C08G8/30

    摘要： Provided is a method of producing a low viscosity phenol-modified aromatic hydrocarbon formaldehyde resin (C), including subjecting an aromatic hydrocarbon formaldehyde resin (A) and a phenol (B) to condensation reaction under the presence of an acid catalyst. The method includes: terminating, when a reaction mixture has a viscosity at 25° C. of 200 to 1,500 mPa·S, the condensation reaction by adding an inorganic basic compound and/or a tertiary amine compound having a boiling point of 300° C. or more; and distilling and removing the phenol (B) unreacted and a low boiling component after termination of the condensation reaction, whereby there can be produced a low viscosity phenol-modified aromatic hydrocarbon formaldehyde resin which is kept in a liquid state and contains small amounts of unreacted phenols, and in which increase in viscosity is small even after removal of low boiling components.

    摘要翻译： 本发明提供一种低粘度苯酚改性芳香族甲醛树脂（C）的制造方法，其特征在于，在酸催化剂的存在下，使芳香族甲醛树脂（A）和苯酚（B）进行缩合反应。 该方法包括：当反应混合物在25℃下的粘度为200〜1500mPa·S时，终止通过加入沸点为300℃的无机碱性化合物和/或叔胺化合物的缩合反应 。 或者更多; 并在缩合反应结束后蒸馏除去未反应的苯酚（B）和低沸点成分，由此可以制备保持液态的低粘度苯酚改性芳香族甲醛树脂，并含有少量未反应的 即使在除去低沸点组分之后，粘度的增加也很小。