Patent SG-11201907244S-A (SG)
Title: Processes for reducing the loss of catalyst activity of a ziegler-natta catalyst
Inventor: SMITH EDWARD
IPC: C08F2/00
Filed: 2017-12-13
Abstract: IPARTIALLY REFRIGERATED' SLOPE . -.51 KG/KG/HR UNREFRIGEP,ATED SLOPE = -1.0 KW/WI/RR FT - — ..... - - ., • • -4-... --„, ---- -\",... 3450 2200 3200 2440 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 16 August 2018 (16.08.2018) WIP0 1 PCT ill mu °million °nolo VIII mil oil DII imio oimIE (10) International Publication Number WO 2018/147931 Al (51) International Patent Classification: C08F 10/00 (2006.01) C08F 2/00 (2006.01) (21) International Application Number: PCT/US2017/065969 (22) International Filing Date: 13 December 2017 (13.12.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/455,764 07 February 2017 (07.02.2017) US (71) Applicant: EXXONMOBIL CHEMICAL PATENTS INC. [US/US]; 5200 Bayway Drive, Baytown, TX 77520 (US). (72) Inventors: SMITH, Edward, F.; 3231 Allen Parkway, #6102, Houston, TX 77019 (US). VAUGHAN, George, A.; 4930 Braesvalley, Houston, TX 77096 (US). AWE, Mike; 271 Barclay Court, Langhorne, PA 19047 (US). SOLLEN, James, R.; 7673 Sunset Dr., Plympton-Wyoming, Ontario ON 1J6 (CA). COOKE, Ronald, N.; 1254 Ridgewood Dri- ve, Sarnia, Ontario N7V 3R1 (CA). RAJPUT, Sateesh, K; 306 Bradford Drive, Sarnia, Ontario N7S 5K3 (CA). ALI, Ahmed, H.; 4300 Dacoma Street, Houston, TX 77092 (US). (74) Agent: ARECHEDERRA III, Leandro et al.; ExxonMo- bil Chemical Company, Law Department, P.O. Box 2149, Baytown, TX 77522-2149 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (54) Title: PROCESSES FOR REDUCING THE LOSS OF CATALYST ACTIVITY OF A ZIEGLER-NATTA CATALYST Productivity vs Thermal Age 100 Thermal Asp (hrs) 1-1 FIGURE 1 1-1 01 N 71- (57) : A process for reducing the loss of catalyst activity of a Ziegler-Natta catalyst is provided. The process includes preparing a Ziegler-Natta (ZN) catalyst by contacting the ZN catalyst with at least one aluminum alkyl compound to produce a reduced ZN catalyst and storing and/or transporting the reduced ZN catalyst for at least 20 days at a temperature of 25°C or less. The reduced ZN 0 catalyst may be used for polymerizing polyolefin polymers. C [Continued on next page] WO 2018/147931 Al MIDEDIMOMMIONE10130101EIHMIIIHIMEMOIMIE GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3))