PROCESSING AIDS FOR OLEFINIC WEBS, INCLUDING ELECTRET WEBS
申请人:Li Fuming B.
公开号:US20120090614A1
公开(公告)日:2012-04-19
Methods of preparing polymeric webs include hot melt blending of thermoplastic resins and processing aids. The process aids include hindered amine N-substituted succinimide oligomers. The webs prepared from the blends may be in the form of films or non-woven fibrous webs. Non-woven microfiber webs are useful as filtration media. Among the polymeric webs produced are electret webs. The processing aids also function as charge-enhancing additives for the electret webs.