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    Polyphenylene sulfide polymer compositions and corresponding articles
    92.
    发明授权
    Polyphenylene sulfide polymer compositions and corresponding articles 有权

    公开(公告)号：US11180637B2

    公开(公告)日：2021-11-23

    申请号：US16619295

    申请日：2018-05-24

    申请人： SOLVAY SPECIALTY POLYMERS USA, LLC

    发明人： Emmanuel Anim-Danso ,  Alessandro Bongiovanni ,  Philippe Martin

    IPC分类号： C08K7/14

    摘要： Described herein are polyphenylene sulfide (“PPS”) polymer compositions including a low MFR PPS polymer and E-CR glass fibers. It was surprisingly discovered that the PPS polymer compositions had significantly improved retention of tensile strength and tensile elongation after water aging (“water aging performance”), relative to corresponding PPS polymer compositions having E glass fibers instead of the E-CR glass fibers. Moreover, it was also discovered that PPS polymer compositions including E-CR glass fibers in conjunction with a low MFR PPS polymer and a high MFR PPS polymer had unexpected synergies with respect to water aging performance, relative to corresponding polymer compositions including E-CR glass fibers and either a low MFR PPS polymer or a high MFR PPS. Due at least in part to the improved water aging performance, the PPS polymer compositions can be advantageously incorporated into application settings where the polymer composition is in contact with water. Examples include, but are not limited to, drinking water applications.

    END-CAPPED POLY(ARYL ETHER SULFONE) POLYMERS, POLY(ARYL ETHER SULFONE) BLOCK COPOLYMERS, AND CORRESPONDING SYNTHESIS METHODS
    98.
    发明申请
    END-CAPPED POLY(ARYL ETHER SULFONE) POLYMERS, POLY(ARYL ETHER SULFONE) BLOCK COPOLYMERS, AND CORRESPONDING SYNTHESIS METHODS 有权

    公开(公告)号：US20210139650A1

    公开(公告)日：2021-05-13

    申请号：US17043699

    申请日：2019-04-24

    申请人： SOLVAY SPECIALTY POLYMERS USA, LLC

    发明人： Joel POLLINO ,  Stéphane JEOL ,  Kelly D. BRANHAM ,  Matthew BOOHER

    IPC分类号： C08G75/23 ,  C08L77/02

    摘要： Described herein are end-capped poly(aryl ether sulfone) (“PAES”) polymers and corresponding synthesis methods. The end-capped PAES polymers are end-capped by functionalizing a PAES polymer with a halophthalic diialkyl ester end-capping agent. It was surprisingly discovered that the resulting dialkyl phthalate end-capped PAES polymers could be synthesized with significantly improved end-capping conversion rates, relative to end-capped PAES polymers directly functionalized with traditional phthalic anhydride end-capping agents. It was also surprisingly found that by heating the isopropyl phthalate end-capped PAES polymers, the polymers could be converted to the corresponding phthalic anhydride end-capped PAES polymers, yielding a more efficient synthetic route to phthalic anhydride end-capped PAES polymers.