Patent SG-11201807182Y-A (SG)
Title: Method for improving ziegler-natta catalyst activity
Inventor: CANN KEVIN J
IPC: C08F110/02
Filed: 2017-02-28
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/151592 Al 8 September 2017 (08.09.2017) WIPO I PCT 1111111111111101110111111111110101111101110111111110111111111101011111111111110111111 (51) International Patent Classification: C08F 110/02 (2006.01) (21) International Application Number: PCT/US2017/019910 (22) International Filing Date: 28 February 2017 (28.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/301,894 1 March 2016 (01.03.2016) US (71) Applicant: UNIVATION TECHNOLOGIES, LLC [US/US]; 5555 San Felipe, Suite 1950, Houston, Texas 77056 (US). (72) Inventors: CANN, Kevin J.; 1375 Pinellas Bayway S41, Tierra Verde, Florida 33715 (US). AWE, Michael D.; 65 Baekeland Avenue, Middlesex, New Jersey 08846 (US). MARIOTT, Wesley R.; 2301 North Brazo sport Boulevard, B- 1811, Freeport, Texas 77541 (US). (74) Agent: HUEBSCH, Joseph C.; Brooks, Cameron & Huebsch, PLLC, 1201 Marquette Avenue South, Suite 400, Minneapolis, Minnesota 55403 (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, 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, 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)) W O 20 17 / 15 15 9 2 Al (54) Title: METHOD FOR IMPROVING ZIEGLER-NATTA CATALYST ACTIVITY (57) : The present disclosure provides a method for improving the activity of Ziegler-Natta (ZN) catalysts. The method in- cludes forming a modified precursor composition of a ZN catalyst by providing a precursor composition of the ZN catalyst for treat - ment with an aluminum alkyl compound in a liquid organic solvent. The precursor composition of the ZN catalyst includes at least one titanium compound. The at least one titanium compound in the precursor composition is treated with the aluminum alkyl com- pound in the liquid organic solvent, where the aluminum alkyl compound converts the at least one titanium compound in the pre- cursor composition into a modified state of the ZN catalyst. At least a portion of the aluminum alkyl compound not consumed in converting the at least one titanium compound in the precursor composition into the modified state of the ZN catalyst and reaction by-product compounds in the liquid organic solvent are removed to form the modified precursor composition of the ZN catalyst.