# US 10,370,471 B2 · Process to form oil containing ethylene-based polymers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,471 B2 - Document ID: US10370471B2 - Status: Granted - Kind: B2 - Application number: 15/521,843 - Filed: 2015-12-18 - Published: 2017-11-02 - Granted: 2019-08-06 - Earliest claimed: 2014-12-29 - Assignees: Dow Global Technologies LLC - Applicants: Dow Global Technologies LLC - Inventors: Thomas W. Karjala; Jorge Rubalcaba; Edward O. Madenjian; Curvel Hypolite; Pradeep Jain - Web page: https://patentgrep.com/patent/US10370471B2 ## CPC - C08F 210/18: with non-conjugated dienes, e.g. EPT rubbers - B01J 19/18: Stationary reactors having moving elements inside (B01J19/08, B01J19/26 take precedence) - B01J 19/2455: {provoking a loop type movement of the reactants (tubular loop-type reactors B01J19/2435; loop reactors having moving elements inside B01J19/1868)} - C08F 2/01: characterised by special features of the polymerisation apparatus used - C08F 2/04: Polymerisation in solution (C08F2/32 takes precedence) - C08F 6/00: Post-polymerisation treatments (C08F8/00 takes precedence; of conjugated diene rubbers C08C) - C08F 6/003: {from polymer solutions, suspensions, dispersions or emulsions without recovery of the polymer therefrom} - C08F 10/02: Ethene - C08J 11/02: of solvents, plasticisers or unreacted monomers - C08L 23/16: Ethylene-propylene or ethylene-propylene-diene copolymers - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract The invention provides a process to form a composition comprising at least one ethylene-based polymer and at least one oil, said process comprising the following: polymerizing a mixture comprising ethylene, and optionally one or more comonomers, in a reactor system, comprising at least one reactor and at least one mixer, located downstream from the reactor, to form the ethylene-based polymer; and wherein the oil is added to the ethylene-based polymer upstream of the mixer. The invention also provides a reactor system for a process to form a composition comprising at least one ethylene-based polymer and at least one oil, said reactor system comprising at least one reactor, at least one mixer, and an oil feed into the ethylene-based polymer, and wherein the oil feed is located after the reactor and before the mixer. ## Claims ### Claim 1 A process to form a composition comprising at least one ethylene-based polymer and at least one oil, said process comprising the following: polymerizing a mixture comprising ethylene, and optionally one or more comonomers, in a reactor system, comprising at least one reactor and at least one mixer, located downstream from the reactor, to form the ethylene-based polymer; wherein the oil is added to the ethylene-based polymer upstream of the mixer, the oil has a volatile fraction, at 400° C. and atmospheric pressure, of less than or equal to 2.0 wt %, based on the total weight of the oil, the mixture further comprises a polymerization solvent, the reactor system comprises a line for recycled polymerization solvent, the recycled polymerization solvent is re-introduced into the at least one reactor, and the difference between the temperature of the oil and the temperature of at least one reactor (Toil−Treactor) is from 50° C. to 150° C. ### Claim 2 (depends on 1) The process of claim 1, wherein the mixer is a static mixer. ### Claim 3 (depends on 1) The process of claim 1, wherein the polymerization is a solution polymerization. ### Claim 4 (depends on 1) The process of claim 1, wherein the at least one reactor is a continuous stirred tank reactor or a Loop reactor. ### Claim 5 (depends on 1) The process of claim 1, wherein the reactor system comprises two reactors. ### Claim 6 (depends on 5) The process of claim 5, wherein the reactor system comprises a stirred tank reactor followed by a Loop reactor. ### Claim 7 (depends on 1) The process of claim 1, wherein the ethylene-based polymer is an ethylene/α-olefin interpolymer. ### Claim 8 (depends on 7) The process of claim 7, wherein the ethylene/α-olefin interpolymer is an ethylene/α-olefin/diene interpolymer. ### Claim 9 A process to form a composition comprising at least one ethylene-based polymer and at least one oil, said process comprising the following: polymerizing a mixture comprising ethylene, and optionally one or more comonomers, in a reactor system, comprising at least one reactor and at least one mixer, located downstream from the reactor, to form the ethylene-based polymer; wherein the oil is added to the ethylene-based polymer upstream of the mixer; and the difference between the temperature of the oil and the temperature of at least one reactor (Toil−Treactor) is from 50° C. to 150° C. ### Claim 10 (depends on 9) The process of claim 9, wherein: the oil has a volatile fraction, at 400° C. and atmospheric pressure, less than or equal to, 2.0 wt %, based on the total weight of the oil, the mixture further comprises a polymerization solvent, the reactor system comprises a line for recycled polymerization solvent, and the recycled polymerization solvent is re-introduced into the at least one reactor. ### Claim 11 (depends on 9) The process of claim 9, wherein the reactor system comprises two reactors. ### Claim 12 (depends on 9) The process of claim 9, wherein the ethylene-based polymer is an ethylene/α-olefin interpolymer.