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公开(公告)号:US20090156729A1
公开(公告)日:2009-06-18
申请号:US12391286
申请日:2009-02-24
申请人: Anthony G. Karandinos , Keith A. Nelson , Jean M. Tancrede , Kenneth Lewtas , Sudhin Datta , Charles Cozewith , Bruce A. Harrington , David J. Lohse , Olivier J.F. Georjon
发明人: Anthony G. Karandinos , Keith A. Nelson , Jean M. Tancrede , Kenneth Lewtas , Sudhin Datta , Charles Cozewith , Bruce A. Harrington , David J. Lohse , Olivier J.F. Georjon
IPC分类号: C09J123/00 , C09J123/10 , C08F255/02 , C08F10/14
CPC分类号: C09J123/10 , C08F210/06 , C08L23/10 , C08L2205/02 , C08L2314/06 , C08L2666/02 , C08L2666/04 , C09J123/14 , C08F210/14 , C08F2500/17 , C08F210/16 , C08F2500/12 , C08F2500/03
摘要: An adhesive blend is described that can include a semi-crystalline copolymer of propylene and at least one comonomer selected from the group consisting of ethylene and at least one C4 to C20 α-olefin, the copolymer having a weight average molecular weight (Mw) from about 15,000 to about 200,000; an melt index (MI) from about 7 dg/min to about 3000 dg/min as measured by ASTM D 1238(B), and a (Mw/Mn) of approximately 2. Various production processes are also described. Also described are adhesive compositions and methods for making adhesive compositions having polymers or polymer blends with melt flow rates (MFRs) equal to and above 250 dg/min. at 230 NC. Certain specific embodiments of the invention involve the use of a free radical initiator, e.g., a peroxide.
摘要翻译: 描述了粘合剂共混物,其可以包括丙烯和至少一种选自乙烯和至少一种C 4 -C 20α-烯烃的共聚单体的半结晶共聚物,所述共聚物的重均分子量(Mw) 约15,000至约20万; 通过ASTM D 1238(B)测量的约7dg / min至约3000dg / min的熔体指数(MI)和约2的(Mw / Mn)。还描述了各种制备方法。 还描述了粘合剂组合物和制备具有熔体流动速率(MFR)等于或高于250dg / min的聚合物或聚合物共混物的粘合剂组合物的方法。 在230 NC。 本发明的某些具体实施方案涉及使用自由基引发剂,例如过氧化物。