Method of preparing a low density, nonflammable polyvinyl foam
composition
    41.
    发明授权
    Method of preparing a low density, nonflammable polyvinyl foam composition 失效
    制备低密度,不可燃聚乙烯泡沫组合物的方法

    公开(公告)号:US4477599A

    公开(公告)日:1984-10-16

    申请号:US439981

    申请日:1982-11-08

    Abstract: A method of preparing a foamable polyvinyl system resin composition which renders a non-flammable, high strength to weight ratio foam product comprises, reacting at least 0.05 parts by weight of an organic radical initiator per 1 part by weight of polyvinyl system resin with the components consisting essentially of (a) at least one polyvinyl system resin (b) 2-100 parts by weight of at least one inorganic filler per 1 part by weight of polyvinyl system resin (c) an effective amount of at least one blowing agent.

    Abstract translation: 一种制备可发泡聚乙烯系树脂组合物的方法,其使得不燃的高强度重量比的泡沫产品包括:使每1重量份聚乙烯基系树脂与至少0.05重量份的有机自由基引发剂与组分 基本上由(a)至少一种聚乙烯基系树脂(b)每1重量份聚乙烯基系树脂(c)2-100重量份的至少一种无机填料,有效量的至少一种发泡剂。

    Impregnation of porous articles
    43.
    发明授权
    Impregnation of porous articles 失效
    浸渍多孔制品

    公开(公告)号:US4147821A

    公开(公告)日:1979-04-03

    申请号:US790912

    申请日:1977-04-26

    Applicant: Peter D. Young

    Inventor: Peter D. Young

    Abstract: This invention relates to the impregnation of rigid porous articles, particularly metal castings. In its preferred form the impregnant is a liquid mixture of monofunctional (meth)acrylic ester and a relatively small proportion of polyfunctional (meth)acrylic ester to provide a cross linked product on curing and to facilitate washing of the casting with water and an emulsifier. A peroxy or other free radical catalyst such as AZBN is associated in the impregnant with an inhibitor such as a hydroquinone derivative so that curing can be effected at a temperature of 90.degree. C. within 3 to 15 minutes. Curing is preferably effected by immersion in a hot water bath.

    Abstract translation: 本发明涉及刚性多孔制品,特别是金属铸件的浸渍。 在其优选形式中,浸渍剂是单官能(甲基)丙烯酸酯和相对小比例的多官能(甲基)丙烯酸酯的液体混合物,以在固化时提供交联产物,并且便于用水和乳化剂洗涤铸件。 过氧或其它自由基催化剂如AZBN在浸渍剂中与抑制剂如氢醌衍生物缔合,使固化可在3〜15分钟内在90℃的温度下进行。 固化优选通过浸入热水浴中来实现。

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