首页>
外国专利>
MALEINIZED POLYPROPYLENE WITH HIGH ACID NUMBER, HIGH MOLECULAR WEIGHT AND LOW COLOR
MALEINIZED POLYPROPYLENE WITH HIGH ACID NUMBER, HIGH MOLECULAR WEIGHT AND LOW COLOR
展开▼
机译:高酸值,高分子量和低色度的马来酸化聚丙烯
展开▼
页面导航
摘要
著录项
相似文献
摘要
A novel, continuous process for the manufacture of novel higher molecular weight and higher acid numbered maleated polypropylenes with lower color at higher efficiencies involving specified ratios of polypropylene, maleic anhydride, and free radical initiator is described. The novel maleated polypropylenes have an acid number greater than 4.5, a yellowness index color of no greater than 76, and a number average molecular weight of at least 20,000. The process entails continuously forming an intimate mixture of molten polypropylene and molten maleic anhydride at one end of a reactor, continuously introducing a free radical initiator, and continuously removing high acid number high molecular weight maleated polypropylene of low color from the opposite end of the reactor.
展开▼