Bone replacement compound comprising poly(polypropylene fumarate)
    1.
    发明授权
    Bone replacement compound comprising poly(polypropylene fumarate) 有权
    包含聚(聚丙烯富马酸酯)的骨替代化合物

    公开(公告)号:US6124373A

    公开(公告)日:2000-09-26

    申请号:US289361

    申请日:1999-04-09

    摘要: A method for controlling the gel point of a bone cement containing poly(polypropylene fumarate), a cross-linking monomer, an initiator, an inorganic filler, and a radical initiator. The gel point is controlled by varying the molecular weight of the poly(polypropylene fumarate) while maintaining the weight average molecular weight (M.sub.w) of the poly(polypropylene fumarate) above 2000 and the polydispersity index of the poly(polypropylene fumarate) below 2. In a preferred embodiment, the molecular weight of the poly(polypropylene fumarate) greater than 4000, and more preferably greater than 5000.

    摘要翻译: 一种控制含有聚(聚丙烯富马酸盐),交联单体,引发剂,无机填料和自由基引发剂的骨水泥凝胶点的方法。 凝胶点通过改变聚(聚丙烯富马酸酯)的分子量来控制,同时保持聚(聚丙烯富马酸酯)的重均分子量(Mw)大于2000,聚(聚丙烯·富马酸酯)的多分散指数低于2。 在优选的实施方案中,聚(聚丙烯富马酸盐)的分子量大于4000,更优选大于5000。

    Synthesis of poly(propylene fumarate) by acylation of propylene glycol in the presence of a proton scavenger
    2.
    发明授权
    Synthesis of poly(propylene fumarate) by acylation of propylene glycol in the presence of a proton scavenger 有权
    在质子清除剂存在下,通过丙二醇酰化合成聚(丙烯酸富马酸酯)

    公开(公告)号:US06355755B1

    公开(公告)日:2002-03-12

    申请号:US09678816

    申请日:2000-10-04

    IPC分类号: C08F11800

    摘要: High molecular weight linear poly(propylene fumarate) having a relatively low polydispersity index by utilizing a relatively pure intermediate and a method for making same. Fumaryl chloride and propylene glycol are reacted in the presence of potassium carbonate. The potassium carbonate present in the reaction solution prevents the acid by-product from catalyzing reactions at the fumarate double bond. The bis(propyl fumarate) produced according to this technique can be transesterified using conventional processing steps to yield P(PF). The P(PF) produced from bis(propyl fumarate) produced according to the present method has a higher molecular weight and is purer than P(PF) produced using previously known techniques.

    摘要翻译: 通过利用相对纯的中间体具有相对低的多分散性指数的高分子量线性聚(富马酸丙烯酯)及其制备方法。 芳基氯和丙二醇在碳酸钾存在下反应。 存在于反应溶液中的碳酸钾防止酸副产物催化富马酸酯双键上的反应。 根据该技术生产的双(丙基富马酸酯)可以使用常规的加工步骤进行酯交换,得到P(PF)。 由本方法生产的双(丙基富马酸盐)产生的P(PF)具有较高的分子量,并且比使用先前已知技术产生的P(PF)更纯。