Patent SG-11201804739T-A (SG)
Title: Process for purification of methyl methacrylate
Inventor: WORLEY WILLIAM G
IPC: C07C67/54
Filed: 2016-12-07
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -' Organization International Bureau rest0) (43) International Publication Date ..... ....rel 22 June 2017(22.06.2017) WIPO I PCT (10) WO International 111111111111311111111111111111111111111111111111111111111111111111111311111111111111111 2017/105955 Publication Al Number (51) International Patent Classification: (72) Inventors: WORLEY, William G.; 1900 Tidal Road, CO7C 67/39 (2006.01) CO7C 6 9 / 5 4 (2006.01) Deer Park, TX 77536 (US). HOY, Stacy W.; 1254 En- CO7C 67/54 (2006.01) clave Parkway, Suite 2901-B3, Houston, TX 77077 (US). (21) International Application Number: (74) Agent: CRIMALDI, Kenneth; Dow Global Technologies PCT/US2016/065324 LLC, 2040 Dow Center, Midland, Michigan 48674 (US). (22) International Filing Date: (81) Designated States (unless otherwise indicated, for every 7 December 2016 (07.12.2016) kind of national protection available): AE, AG, AL, AM, (25) Filing Language: English 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, (26) Publication Language: English DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, (30) Priority Data: KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, 62/269,458 18 December 2015 (18.12.2015) US MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, (71) Applicants: ROHM AND HAAS COMPANY [US/US]; OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, 100 Independence Mall West, Philadelphia, PA 19106 SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, (US). DOW GLOBAL TECHNOLOGIES LLC TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, [US/US]; 2040 Dow Center, Midland, MI 48674 (US). ZW. [Continued on next page] Title: PROCESS FOR PURIFICATION METHYL METHACRYLATE (54) OF (57) : A for methyl methacrylate by feeding a process purifying FIGURE 1 product mixture comprising methanol, methyl methacrylate and alkali metal salts thereof, methacrolein, water and heavy byproducts to a distillation column having least 15 The hydrocarbon enter the at trays. product mixture and a C 6 -C 7 distillation column above the middle of the distillation column. An overhead 3stream comprising C6-C7 hydrocarbon, methacrolein, methanol, water and 0 methyl methacrylate and a bottoms stream comprising water, methyl methac- rylate and its alkali metal salt and heavy byproducts are removed from the ea column. 5 111 .4t 11111 un in CT\ in 0 10 1-1 IN 1-1 0 ei O WO 2017/105955 Al MIDEDIMOMOIDEIR0101301011MIHEMERVOIMIE (84) Designated States (unless otherwise indicated, for every SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, kind of regional protection available): ARIPO (BW, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, GH, SZ, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, Published: RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, CZ, IT, RS, DE, — LT, SE, with international search report (Art. 21(3))