TRICYANOHEXANE PURIFICATION METHODS
    35.
    发明公开

    公开(公告)号:US20230416192A1

    公开(公告)日:2023-12-28

    申请号:US18462780

    申请日:2023-09-07

    CPC classification number: C07C253/34

    Abstract: Provided herein are processes for purifying TCH in a feed stream, such as an adiponitrile process stream. The processes include a first separating step of separating the adiponitrile process stream to form a first overhead stream comprising low-boiling components and high-boiling components and a first bottoms stream comprising high-boiling components. The processes also include a second separating step of separating the first overhead stream in one or more distillation columns to form a lights stream comprising low-boiling components, a heavies stream comprising high-boiling components, and a TCH stream.

    POLYAMIDE ELASTOMERS WITH HIGH MELTING POINTS

    公开(公告)号:US20230365753A1

    公开(公告)日:2023-11-16

    申请号:US18315153

    申请日:2023-05-10

    CPC classification number: C08G69/28

    Abstract: A method of producing a polyamide elastomer comprising feeding a salt solution having a solids content of greater than or equal to 80% to a reactor having a phosphorous containing catalyst having a phosphorous level from 5 to 1000 part by million based on the total weight of the catalyst, feeding a polyether amine to the reactor, and reducing the pressure in the reactor once a target temperature is reached to polymerize the salt solution and the polyether amine to form the polyamide elastomer. The polyamide elastomer has particular uses as a cable tie and demonstrates improved cold-temperature applications while maintaining high strength, good flammability rating, and excellent processability.

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