Polyurethanes from dialkyl diaminobenzenes and processes therefor
    2.
    发明授权
    Polyurethanes from dialkyl diaminobenzenes and processes therefor 失效
    来自二烷基二氨基苯的聚氨酯及其工艺

    公开(公告)号:US4526905A

    公开(公告)日:1985-07-02

    申请号:US612965

    申请日:1984-05-23

    摘要: Dialkyl diamines for use with polyols and polyisocyanates in cast elastomer and reaction injection molding polyurethane processes. The dialkyl diamines are prepared by nitration and reduction of dialkylbenzenes or alkylation of meta-phenylenediamine. The chain extenders have the following structure: ##STR1## where R.sub.1 is C.sub.1 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl and R.sub.2 is C.sub.2 -C.sub.6 alkyl or C.sub.3 -C.sub.6 cycloalkyl.Contrary to the teachings of the prior art the novel diamines have surprisingly good reaction times to form polyurethanes with excellent physical properties. Furthermore, little or no mold release is required in RIM and other processes using the chain extenders of the invention.

    摘要翻译: 用于浇铸弹性体中的多元醇和多异氰酸酯的二烷基二胺和反应注塑聚氨酯工艺。 二烷基二胺通过硝化和还原二烷基苯或间苯二胺的烷基化来制备。 扩链剂具有以下结构:其中R 1是C 1 -C 6烷基或C 3 -C 6环烷基,R 2是C 2 -C 6烷基或C 3 -C 6环烷基。 与现有技术的教导相反,新型二胺具有令人惊奇的良好反应时间以形成具有优异物理性能的聚氨酯。 此外,在使用本发明的扩链剂的RIM和其它方法中,很少或不需要脱模。

    Compositions for surface cleaning in aerosol applications
    3.
    发明授权
    Compositions for surface cleaning in aerosol applications 失效
    用于气溶胶应用中表面清洁的组合物

    公开(公告)号:US06258770B1

    公开(公告)日:2001-07-10

    申请号:US09151822

    申请日:1998-09-11

    IPC分类号: C11D750

    摘要: When certain weight ratios of certain flammable additive components (an ether and an epoxyalkane) are blended in n-propyl bromide, the components can actually function as flame retardants or flame suppressants when the resulting cleaning composition is used in aerosol applications. The proportions of the additives used are small; yet suitably effective stabilization against metallic corrosion is achieved even at mildly elevated temperatures.

    摘要翻译: 当某些可燃添加剂组分(醚和环氧烷烃)的某些重量比混合在正丙基溴中时,当所得清洁组合物用于气溶胶应用时,组分实际上可用作阻燃剂或阻燃剂。 所用添加剂的比例小; 即使在温和升高的温度下也能实现对金属腐蚀的适当有效的稳定化。