IMPROVED PROCESS FOR PRODUCING PELLETIZED POLYMER COMPOSITIONS |
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| 申请号 | US15318141 | 申请日 | 2014-06-12 | 公开(公告)号 | US20170129976A1 | 公开(公告)日 | 2017-05-11 |
| 申请人 | DOW GLOBAL TECHNOLOGIES LLC; | 发明人 | Brian W. Kolthammer; Michael J. Zogg, JR.; | ||||
| 摘要 | The instant invention provides an improved process for producing pelletized polymer compositions, and pelletized polymer compositions. The process for producing a pelletized polymer composition according to the present invention comprises: (1) polymerizing one or more alpha-olefins in one or more solution reactors thereby producing a molten polymer composition comprising one or more solvents; (2) removing at least a portion of said one or more solvents thereby forming a polymer composition having a low solvent content (typically less than 1,000 parts of solvent per million of polymer on a weight basis); (3) removing heat from said polymer composition having low solvent content to a temperature in the range of equal to or greater than the crystallization point of the polymer composition having low solvent content to less than or equal to a temperature in the range of from (the crystallization point of the polymer composition having low solvent content+20° C.) thereby forming a viscous polymer melt; and (4) pelletizing said viscous polymer melt via an underwater pelletizer thereby forming said pelletized polymer composition. | ||||||
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