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    ONE-COMPONENT ADHESIVE COMPOSITIONS
    1.
    发明申请
    ONE-COMPONENT ADHESIVE COMPOSITIONS 审中-公开

    公开(公告)号：WO2020131729A1

    公开(公告)日：2020-06-25

    申请号：PCT/US2019/066592

    申请日：2019-12-16

    Applicant: STEPAN COMPANY

    Inventor： O'BRIEN, Michael, E. ,  KAPLAN, Warren A. ,  WESTFALL, Jennifer S.

    IPC: C08G59/42 ,  C08G59/62 ,  C09J163/00

    Abstract: One-component (1 K) adhesive compositions ("PEEP" compositions) and a process for making them are disclosed. A polyepoxide is reacted with a polyether polyol composition, a polyester polyol composition, or both in the presence of a heat-activated Lewis acid catalyst at a temperature within the range of 100°C to 220°C for a time effective to cure the adhesive. The compositions are storage-stable under ambient conditions. Compared with conventional epoxy compositions, the 1 K PEEP compositions offer improved room temperature lap shear strength, better resilience, and higher elongation. The 1 K PEEP systems deliver a desirable balance of physical and mechanical properties while avoiding polyisocyanates and polyamine crosslinkers.

    ISOCYANATE-MODIFIED POLYESTER-EPOXIDE POLYMER COMPOSITIONS
    4.
    发明公开
    ISOCYANATE-MODIFIED POLYESTER-EPOXIDE POLYMER COMPOSITIONS 审中-公开

    公开(公告)号：EP4166587A1

    公开(公告)日：2023-04-19

    申请号：EP22212857.1

    申请日：2017-08-08

    Applicant: Stepan Company

    Inventor： KAPLAN, Warren A. ,  WESTFALL, Jennifer S.

    IPC: C08G18/00 ,  C08G18/42 ,  C08G18/18 ,  C09D175/06 ,  C08L75/06 ,  C09J175/06 ,  C08G18/76 ,  C08G18/58

    Abstract: Isocyanate-modified polyester-epoxide polymer (i-PEEP) compositions are disclosed. The i-PEEP compositions comprise a reaction product of a polyepoxide compound, a polyisocyanate, and a polyester polyol composition. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.2 to 2. The i-PEEP index as defined herein is within the range of 100 to 200. The i-PEEP composition has a T g within the range of -30°C to 35°C. Low- and elevated-temperature processes catalyzed by bases or Lewis acids for making the i-PEEP compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for coatings, elastomers, adhesives, sealants, and other valuable products is assembled from readily available starting materials without reliance on the polyamines typically used to cure epoxy systems.

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