Highly crystalline polypropylene waxes
    2.
    发明申请
    Highly crystalline polypropylene waxes 审中-公开
    高度结晶的聚丙烯蜡

    公开(公告)号:US20090036619A1

    公开(公告)日:2009-02-05

    申请号:US12221234

    申请日:2008-07-31

    摘要: Polypropylene wax having a) a dropping or softening point determined by the ring/ball method of greater than 155° C., b) heats of fusion greater than 80 J/g and c) a DSC melting point of >155° C. The waxes of the invention are prepared by reaction of propylene with metallocene compounds at temperatures in the range from 40 to 140° C. and an olefin partial pressure in the range from 1 to 50 bar in the presence of a cocatalyst. They have a content of unsaturated chain ends of less than 10%. They can, for example, be modified by means of a free-radical grafting reaction with polar monomers and are, for example, suitable in unmodified form as dispersants for pigments, as additive in printing inks and surface coatings or toners or in modified form for producing aqueous dispersions or as bonding agents and compatibilizers in plastic compounds.

    摘要翻译: 聚丙烯蜡,其具有a)通过环/球法测定的滴定或软化点大于155℃,b)大于80J / g的熔融热,c)DSC熔点> 155℃。 在助催化剂存在下,通过丙烯与金属茂化合物在40〜140℃的温度和1〜50巴的烯烃分压反应制备本发明的蜡。 它们的不饱和链端含量小于10%。 它们可以例如通过与极性单体的自由基接枝反应进行改性,并且例如适合于未改性形式作为颜料的分散剂,作为印刷油墨和表面涂料或调色剂中的添加剂或以改性形式用于 生产水分散体或作为粘合剂和增塑剂在塑料化合物中。