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1. (WO2019083715) SELECTIVELY TRANSITIONING POLYMERIZATION PROCESSES
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/083715 International Application No.: PCT/US2018/054906
Publication Date: 02.05.2019 International Filing Date: 09.10.2018
IPC:
C08F 210/02 (2006.01) ,C08F 2/01 (2006.01) ,C08F 2/34 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
210
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
02
Ethene
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2
Processes of polymerisation
01
characterised by special features of the polymerisation apparatus used
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2
Processes of polymerisation
34
Polymerisation in gaseous state
Applicants:
UNIVATION TECHNOLOGIES, LLC [US/US]; 5555 San Felipe, Suite 1950 Houston, TX 77056, US
Inventors:
LIU, Bo; US
GOODE, Mark G.; US
Agent:
PURCHASE, Claude; US
Priority Data:
62/578,05827.10.2017US
Title (EN) SELECTIVELY TRANSITIONING POLYMERIZATION PROCESSES
(FR) TRANSITION SÉLECTIVE DE PROCESSUS DE POLYMÉRISATION
Abstract:
(EN) A method of selectively transitioning a polymerization process making an ethylene/alpha-olefin copolymer in such a way that melt elasticity of the copolymer is substantially changed without changing comonomer and without substantially changing density of the copolymer. A method of compensating a reactor temperature-induced change in melt elasticity with an inverse change in H2/C2 gas molar ratio. Also, use of process control variable(s) to selectively change the melt elasticity.
(FR) L'invention concerne un procédé de transition sélective d'un processus de polymérisation pour fabriquer un copolymère d'éthylène/alpha-oléfine, de sorte que l'élasticité à l'état fondu du copolymère soit sensiblement modifiée sans changer de comonomère, et sans changement sensible de la densité du copolymère. L'invention concerne un procédé de compensation d'un changement induit par la température du réacteur sur l'élasticité à l'état fondu, par une inversion du rapport molaire de H2/C2 gazeux. L'invention concerne également l'utilisation d'une ou de plusieurs variable(s) de commande de processus pour modifier sélectivement l'élasticité à l'état fondu.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)