Beta-amino nitrile catalysts for polyurethane preparation
    1.
    发明授权
    Beta-amino nitrile catalysts for polyurethane preparation 失效
    用于聚氨酯制备的BETA-AMINO NITRILE催化剂

    公开(公告)号:US3925268A

    公开(公告)日:1975-12-09

    申请号:US36955673

    申请日:1973-06-13

    Abstract: Cellular urethane polymers essentially free of the strong, objectionable amine odor characteristic of N-ethylmorpholine, are provided by effecting the polyurethane forming reaction in the presence of beta-tert-amino nitriles. In view of their low residual odor and effectiveness in the catalysis of the waterisocyanate reaction, the beta-amino nitriles either alone or in combination with other tertiary amines, are used with particular advantage as direct replacements for N-ethyl-morpholine in the manufacture of water-blown flexible polyurethanes, both molded and free-rise, including high-resilience foam as well as foams stabilized with either organosilicone or silicon-free organic surfactants. Especially effective for the formation of flexible polyester foam stabilized with either type of surfactant are blends of the beta-amino nitrile catalyst such as, in particular, 3-(N,N-dimethylamino)propionitrile, with dimethylethanolamine or a bis(2-(N,N-dimethylamino)alkyl)-ether.

    Radiation crosslinked dinorbornene polymers
    6.
    发明授权
    Radiation crosslinked dinorbornene polymers 失效
    辐射交联的DINORBNENEN聚合物

    公开(公告)号:US3658669A

    公开(公告)日:1972-04-25

    申请号:US3658669D

    申请日:1968-09-13

    CPC classification number: C08J3/246 C07C271/12

    Abstract: Dinorbornene compounds, many of them novel, have been found to form polymers having a ladder structure. The dinorbornene compounds and dinorbornene polymers with other polymers such as the polyolefins, vinyl polymers, acrylic polymers, polyesters, polyamides, polyethers, polyureas, polyurethanes, natural polymers, etc., are readily crosslinked by irradiation.

    Abstract translation: 已经发现,其中许多是新型的降冰片烯化合物形成具有梯形结构的聚合物。 与其它聚合物如聚烯烃,乙烯基聚合物,丙烯酸聚合物,聚酯,聚酰胺,聚醚,聚脲,聚氨酯,天然聚合物等的二茚并二烯化合物和二氢降冰片烯聚合物通过照射容易交联。

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