# US 7,071,276 B2 · Process to produce polymers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,071,276 B2 - Document ID: US7071276B2 - Status: Granted - Kind: B2 - Application number: 10/319,393 - Filed: 2002-12-13 - Published: 2003-08-28 - Granted: 2006-07-04 - Earliest claimed: 1998-12-30 - Assignees: Phillips Petroleum Company - Inventors: Max P. McDaniel; Elizabeth A. Benham; Al R. Wolfe - Web page: https://patentgrep.com/patent/US7071276B2 ## CPC - C08F 10/00: Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond - C08F 10/02: Ethene - C08F 210/16: Copolymers of ethene with alpha-alkenes, e.g. EP rubbers - C08F 2410/04: Dual catalyst, i.e. use of two different catalysts, where none of the catalysts is a metallocene - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract A process to produce ethylene polymers is provided. ## Claims ### Claim 1 A composition comprising an ethylene polymer having a polydispersity (Mw/Mn) greater than about 40, a high load melt index (HLMI) from about 5 to about 15 grams per ten minutes, a shear ratio (HLMI/MI) greater than about 400, and a density from 0.945 to 0.955 grams per cubic centimeter, wherein the ethylene polymer is an ethylene homopolymer or a copolymer of ethylene and an α-olefin having from 4 to about 16 carbon atoms per molecule. ### Claim 2 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than 50. ### Claim 3 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than 60. ### Claim 4 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a pent test greater than about 500 hours. ### Claim 5 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a density from 0.947 to 0.953 grams per cubic centimeter. ### Claim 6 (depends on 5) The composition of claim 5, wherein the ethylene polymer has a pent test greater than 1000 hours. ### Claim 7 (depends on 6) The composition of claim 6, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than 50. ### Claim 8 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a density from 0.948 to 0.951 grams per cubic centimeter. ### Claim 9 (depends on 8) The composition of claim 8, wherein the ethylene polymer has a pent test greater than 2000 hours. ### Claim 10 (depends on 9) The composition of claim 9, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than 60. ### Claim 11 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a HLMI from 8 to 13 grams per ten minutes. ### Claim 12 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a shear (HLMI/MI) ratio greater than 500. ### Claim 13 (depends on 1) The composition of claim 1, wherein the α-olefin has from 4 to about 8 carbon atoms per molecule. ### Claim 14 (depends on 1) The composition of claim 1, wherein the α-olefin has from 4 to about 6 carbon atoms per molecule. ### Claim 15 (depends on 1) The composition of claim 1, wherein the olefin is 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, or 1-octene. ### Claim 16 (depends on 1) The composition of claim 1, wherein the ethylene polymer has a HLMI from 8 to 13 grams per ten minutes, a density from 0.948 to 0.951 grams per cubic centimeter, and a pent test greater than 2000 hours. ### Claim 17 (depends on 6) The composition of claim 6, wherein the ethylene polymer has a shear ratio (HLMI/MI) greater than 500. ### Claim 18 (depends on 16) The composition of claim 16, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than 60. ### Claim 19 A composition comprising an ethylene polymer having a high load melt index (HLMI) from about 2 to about 20 grams per ten minutes, a shear ratio (HLMI/MI) greater than about 400, and a density from 0.945 to 0.955 grams per cubic centimeter, wherein the ethylene polymer is an ethylene homopolymer or a copolymer of ethylene and an olefin having from 4 to about 16 carbon atoms per molecule. ### Claim 20 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than about 40. ### Claim 21 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than 50. ### Claim 22 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a polydispersity (Mw/Mn) greater than 60. ### Claim 23 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a pent test greater than about 500 hours. ### Claim 24 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a density from 0.947 to 0.953 grams per cubic centimeter. ### Claim 25 (depends on 24) The composition of claim 24, wherein the ethylene polymer has a pent test greater than 1000 hours. ### Claim 26 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a density from 0.948 to 0.951 grams per cubic centimeter. ### Claim 27 (depends on 26) The composition of claim 26, wherein the ethylene polymer has a pent test greater than 2000 hours. ### Claim 28 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a HLMI from about 5 to about 15 grams per ten minutes. ### Claim 29 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a HLMI from 8 to 13 grams per ten minutes. ### Claim 30 (depends on 19) The composition of claim 19, wherein the ethylene polymer has a shear ratio (HLMI/MI) greater than 500. ### Claim 31 (depends on 19) The composition of claim 19, wherein the olefin is 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, or 1-octene. ### Claim 32 A composition comprising an ethylene polymer having a density from 0.945 to 0.955 grams per cubic centimeter, a shear ratio (HLMI/MI) greater than about 300, a high load melt index (HLMI) from about 2 to about 20 grams per ten minutes, and a pent test greater than about 500, wherein the ethylene polymer is an ethylene homopolymer or a copolymer of ethylene and an olefin having from 4 to about 16 carbon atoms per molecule. ### Claim 33 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a density from 0.947 to 0.953 grams per cubic centimeter. ### Claim 34 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a density from 0.948 to 0.951 grams per cubic centimeter. ### Claim 35 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a HLMI from about 5 to about 15 grams per ten minutes. ### Claim 36 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a HLMI from 8 to 13 grams per ten minutes. ### Claim 37 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a shear ratio (HLMI/MI) greater than 400. ### Claim 38 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a shear ratio (HLMI/MI) greater than 500. ### Claim 39 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a pent test greater than 1000 hours. ### Claim 40 (depends on 32) The composition of claim 32, wherein the ethylene polymer has a pent test greater than 2000 hours. ### Claim 41 (depends on 32) The composition of claim 32, wherein the olefin is 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, or 1-octene. ### Claim 42 (depends on 1) A pipe comprising the ethylene polymer of claim 1. ### Claim 43 (depends on 19) A pipe comprising the ethylene polymer of claim 19. ### Claim 44 (depends on 32) A pipe comprising the ethylene polymer of claim 32.