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1. 发明授权

US06565784B1 Telecommunications cable composition process 有权
标题翻译：电信电缆组成过程
公开(公告)号：US06565784B1
公开(公告)日：2003-05-20
申请号：US09585698
申请日：2000-06-01
申请人： Mohamed Esseghir , Alex Kharazi , John Francis Wojdyla , Sean Gerard Duffy , Thomas Shiaw-Tong Lin
发明人： Mohamed Esseghir , Alex Kharazi , John Francis Wojdyla , Sean Gerard Duffy , Thomas Shiaw-Tong Lin
IPC分类号： B29C4700
CPC分类号： C08J3/201 , B29B7/007 , B29B7/88 , B29C47/0004 , B29C47/0016 , C08J2323/02 , H01B3/441
摘要： A process for the preparation of a composition useful in telecommunications jacketing comprising: (i) introducing a polyolefin into the first mixing zone of a melt/mixer having first and second mixing zones; (ii) introducing particulate carbon black per se or a premix of said carbon black and polyolefin into the first mixing zone, said carbon black being in an amount of about 2 to about 50 percent based on the weight of the polyolefin introduced into the first mixing zone; (iii) melting the polyolefin in the presence of the carbon black in the first mixing zone; (iv) mixing the carbon black and the molten polyolefin in the first mixing zone to provide a molten mixture; (v) passing the molten mixture from step (iv) into the second mixing zone; (vi) adding sufficient polyolefin to the molten mixture from step (v) to dilute the carbon black to a level of about 2 to about 3 percent by weight based on the weight of the total polyolefin in the melt/mixer; (vii) mixing the added polyolefin with the molten mixture in the second mixing zone to provide a molten mixture; (viii) about simultaneously with step (vii), venting the second mixing zone; (ix) recovering the mixture from step (vii); and (x) optionally, pelletizing the mixture from step (ix).
摘要翻译：一种制备用于电信护套的组合物的方法，包括：（i）将聚烯烃引入具有第一和第二混合区的熔体/混合器的第一混合区中;（ii）引入颗粒状炭黑本身或预混物所述炭黑和聚烯烃进入第一混合区，所述炭黑的量为引入第一混合区的聚烯烃的重量的约2-约50％;（iii）在（iv）将第一混合区中的炭黑和熔融聚烯烃混合以提供熔融混合物;（v）使来自步骤（iv）的熔融混合物进入第二混合区;（vi ）将足够的聚烯烃添加到来自步骤（v）的熔融混合物中以将炭黑稀释至基于熔体/混合器中总聚烯烃重量的约2至约3重量％的水平;（vii）将所加入的聚烯烃与（vii）大约与步骤（vii）同时排出第二混合区;（ix）回收步骤（vii）中的混合物;（vii）和（x）任选地，将步骤（ix）的混合物造粒。

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