发明名称 |
Polyethylene film having improved barrier properties and methods of making same |
摘要 |
A polymeric resin having a density of greater than about 0.960 g/cc, a melt index of from about 1.3 g/10 min. to about 2.8 g/10 min., a zero shear viscosity of from about 1×104 Pa*s to about 1×105 Pa*s, a recoverable shear parameter of from about 220 to about 370, and a CY-a parameter of from about 0.155 to about 0.200. A polymeric resin having an initial tension defined by the equation IT≧−1.67*(MI)+b where b is 5.17 and a percent decrease in the extrusion pressure of the resin of about 30% when compared to polymer resin of similar melt index prepared with a catalyst that has not undergone an activation comprising an oxidation, reduction, oxidation sequence wherein the resin when formed into a film has a moisture vapor transmission rate of from about 0.21 g.mil/100 in2/day to about 0.33 g.mil/100 in2/day. |
申请公布号 |
US8852748(B2) |
申请公布日期 |
2014.10.07 |
申请号 |
US200912394636 |
申请日期 |
2009.02.27 |
申请人 |
Chevron Phillips Chemical Company LP |
发明人 |
Sukhadia Ashish M.;McDaniel Max P.;Cymbaluk Ted;Krishnaswamy Rajendra K.;Szmutko Lawrence |
分类号 |
C08F210/00;C08F110/02;B32B27/08;C08J5/18 |
主分类号 |
C08F210/00 |
代理机构 |
Conley Rose, P.C. |
代理人 |
Conley Rose, P.C. ;Carroll Rodney B.;Huseman Cheryl L. |
主权项 |
1. A polymeric resin having a density of greater than 0.960 g/cc, a melt index of from about 1.3 g/10 min. to about 2.8 g/10 min., a zero shear viscosity of from about 1×104 Pa*s to about 1×105 Pa*s, a recoverable shear parameter of from about 220 to about 370, a CY-a parameter of from about 0.155 to about 0.200 and a ratio of HLM/MI of from greater than about 50 to about 70, wherein the resin when formed into a film has a moisture vapor transmission rate of from about 0.21 g.mil/100 in2/day to about 0.33 g.mil/100 in2/day. |
地址 |
The Woodlands TX US |