Invention Grant
- Patent Title: Ethylene-based polymers with low hexane extractables and low densities
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Application No.: US15737474Application Date: 2016-06-16
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Publication No.: US10730973B2Publication Date: 2020-08-04
- Inventor: Otto J. Berbee , Cornelis F. J. Den Doelder , Stefan Hinrichs , Teresa P. Karjala , John O. Osby
- Applicant: Dow Global Technologies LLC
- Applicant Address: US MI Midland
- Assignee: Dow Global Technologies LLC
- Current Assignee: Dow Global Technologies LLC
- Current Assignee Address: US MI Midland
- Agency: Quarles & Brady LLP
- International Application: PCT/US2016/037809 WO 20160616
- International Announcement: WO2016/209706 WO 20161229
- Main IPC: C08F110/02
- IPC: C08F110/02 ; C08F2/38 ; C08F4/38

Abstract:
Ethylene-based polymers comprising the following properties: (A) a density less than 0.9190 g/cc; (B) a hexane extractable level that meets the following equation: hexane extractable level ≤A+B [log(12)], where A=2.65 wt %, and B—0.25 wt %[log (dg/min)]; based on total weight of the ethylene-based polymer; (C) a G′ (at G″=500 Pa, 1 70° C.) that meets the following equation: G′≥C+D [log(12)], where C=150 Pa, and D=−60 Pa/[log(dg/min)]; and (D) a melt index (12) from 0.7 to 20 dg/min; are made in high pressure tubular process that comprises at least three reaction zones with the peak polymerization temperature of the first reaction zone ≥320° C. and the peak polymerization temperature of the last reaction zone ≤290° C.
Public/Granted literature
- US20190002606A1 Ethylene-Based Polymers with Low Hexane Extractables and Low Densities Public/Granted day:2019-01-03
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