Patent SG-11201811040T-A (SG)
Title: A process for purifying propylene oxide
Inventor: TELES JOAQUIM HENRIQUE
IPC: C07D301/32
Filed: 2017-07-19
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 25 January 2018 (25.01.2018) W I PO I PCT omit °nolo omm loom!! Immo oimIE (10) International Publication Number WO 2018/015434 Al (51) International Patent Classification: C07D 301/32 (2006.01) (21) International Application Number: PCT/EP2017/068227 (22) International Filing Date: 19 July 2017 (19.07.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16180305.1 20 July 2016 (20.07.2016) EP (71) Applicants: BASF SE [DE/DE]; Carl-Bosch-Str. 38, 67056 Ludwigshafen am Rhein (DE). DOW GLOBAL TECHNOLOGIES LLC [US/US]; 2040 Dow Center, Midland, MI 48674 (US). (72) Inventors: TELES, Joaquim H.; Philipp-Hirsch-Str. 4, 67165 Waldsee (DE). KRAMP, Marvin; Lindenhof- str. 104, 68163 Mannheim (DE). MUELLER, Christ- ian; Neckarpromenade 25/188, 68167 Mannheim (DE). WOERZ, Nicolai Tonio; Viktoriaplatz 1, 64293 Darm- stadt (DE). METZEN, Bernd; Grfiner Ring 6, 67593 Westhofen (DE). KELLER, Tobias; Pfaffenbergstrasse 3, 67663 Kaiserslautern (DE). RIEDEL, Dominic; Richard- Weber-StraBe 20, 68623 Lampertheim (DE). SCHEL- LING, Heiner; Am Bueschel 9a, 67273 Bobenheim am Berg (DE). WEBER, Markus; Ruppertsberger Str. 7, 67117 Limburgerhof (DE). URBANCZYK, Daniel; Darm- staedter Str. 86, 64347 Griesheim (DE). PARVULESCU, Andrei-Nicolae; Hauptstrasse 74, 67152 Ruppertsberg (DE). WEGERLE, Ulrike; St.-Bonifatius-Str. 11, 67550 Worms (DE). MUELLER, Ulrich; Am Stecken 14a, 67435 Neustadt (DE). WEIDENBACH, Meinolf; Kehdingertor- swall 3, 21682 Stade (DE). WITZL, Werner; Konigsmark- strasse 11, 21682 Stade (DE). (74) Agent: ALTMANN, Andreas; HERZOG FIESSER & PARTNER PATENTANWALTE PARTG MBB, Isartor- platz 1, 80331 Muenchen (DE). (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, 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)) = (54) Title: A PROCESS FOR PURIFYING PROPYLENE OXIDE (57) : The present invention is related to a process for purifying propylene oxide, comprising (i) providing a stream SO comprising propylene oxide, acetonitrile, water, and an organic compound comprising a carbonyl group -C(=0)-, wherein said organic compound comprising a carbonyl group -C(=0)- comprises one or more of acetone and propionaldehyde; (ii) separating propylene oxide from the stream SO by distillation, comprising (11.1) subjecting the stream SO to distillation conditions in a first distillation unit, obtaining a gaseous top stream S1 c which is enriched in propylene oxide compared to the stream SO, a liquid bottoms stream Sla which is enriched in acetonitrile and water compared to the stream SO, and a side stream S lb comprising propylene oxide which is enriched in the carbonyl compound compared to the stream SO; (11.2) reacting the carbonyl compound comprised in the side stream S lb with an organic compound comprising an amino group -NH2 obtaining a reaction product of the organic compound comprising a carbonyl group and the organic compound comprising an amino group; (11.3) separating propylene oxide from the reaction product of the organic compound comprising a carbonyl group and the organic compound comprising an amino group in a second distillation unit, obtaining a gaseous top stream S3a which is enriched in propylene oxide and a liquid bottoms stream S3b which is enriched in the O reaction product of the organic compound comprising a carbonyl group and the organic compound comprising an amino group; (11.4) 00 introducing the top stream S3a which is enriched in propylene oxide propylene oxide into the first distillation unit. O C