Spurted polyolefin fibers with improved dispersibility in hydrocarbons, including hydrocarbon containing asphalt compositions and method for making the same
申请人:HERCULES INCORPORATED
公开号:EP0092917A1
公开(公告)日:1983-11-02
To an aqueous dispersion of spurted polyolefin pulp is added from about 1% to about 20%, preferably from about 2% to about 12%, by solid weight based on the weight of spurted polyolefin pulp, of an anionic latex containing a rubber or synthetic resin which is swellable in hydrocarbons. The latex is then precipitated onto the spurted polyolefin pulp with a suitable agent, preferably water-soluble calcium, magnesium, barium or aluminum salts or calcium or barium hydroxides. When the product is recovered, the resulting natural rubber or synthetic resin treated spurted polyolefin pulp is readily dispersible in hydrocarbons. Because of this, the pulp can be added to cutback asphalt to form viscous compositions which can be readily sprayed, brushed and trowled with minimal pulp separation problems.
在喷浆聚烯烃纸浆的水性分散液中,按喷浆聚烯烃纸浆重量的固体重量计,加入约 1%至约 20%,最好是约 2%至约 12%的阴离子胶乳,其中含有可在碳氢化合物中溶胀的橡胶或合成树脂。然后用适当的制剂,最好是水溶性的钙、镁、钡或铝盐或钙或钡氢氧化物,将胶乳沉淀到喷出的聚烯烃纸浆上。回收产品时,经过天然橡胶或合成树脂处理的喷浆聚烯烃纸浆很容易分散在碳氢化合物中。正因为如此,这种纸浆可以添加到切割后的沥青中,形成粘稠的组合物,这种组合物可以很容易地喷洒、刷涂和镘涂,而纸浆分离的问题却很小。