Patent SG-11201907595S-A (SG)
Title: Method of making acrylic acid from lactic acid or lactide using molten salt catalysts
Inventor: ALBERT JAKOB
IPC: C07C57/04
Filed: 2018-03-07
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 13 September 2018 (13.09.2018) WIP0 I PCT 0111111010 0111 °nolo VIII OH mil nio oimIE (10) International Publication Number WO 2018/165283 Al (51) International Patent Classification: C07C 51/353 (2006.01) C07C 57/04 (2006.01) C07C 51/363 (2006.01) CO7C 53/19 (2006.01) CO7C 51/377 (2006.01) (21) International Application Number: PCT/US2018/021322 (22) International Filing Date: 07 March 2018 (07.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/467,964 07 March 2017 (07.03.2017) US 62/616,010 11 January 2018 (11.01.2018) US (71) Applicants: THE PROCTER & GAMBLE COMPANY [US/US]; One Procter & Gamble Plaza, Cincinnati, Ohio 45202 (US). FRIEDRICH ALEXANDER UNIVERSI- TAT ERLANGEN-NURNBERG [DE/DE]; Zentral Uni- versitatasverwaltung F2-Patentmanagement, Henkestrs 91, 91052 Erlangen (DE). (72) Inventors: ALBERT, Jakob; Friedrich-Alexander Uni- vistat Erlangen-Nurnberg, Schlossplatz 4, 91052 Erlan- gen (DE). WASSERSCHEID, Peter; Friedrich-Alexan- der Univistat Erlangen-Nurnberg, Schlossplatz 4, 91052 Erlangen (DE). TACCARDI, Nicola; Friedrich-Alexan- der Univistat Erlangen-Nurnberg, Schlossplatz 4, 91052 Erlangen (DE). NAGENGAST, Jens; Friedrich-Alexan- der Univistat Erlangen-Nurnberg, Schlossplatz 4, 91052 Erlangen (DE). KEHRER, Matthias; Friedrich-Alexan- der Univistat Erlangen-Nurnberg, Schlossplatz 4, 91052 Er- langen (DE). KADAR, Julian; Friedrich-Alexander Uni- vistat Erlangen-Nurnberg, Schlossplatz 4, 91052 Erlangen (DE). COLLIAS, Dimitris, Ioannis; One Procter & Gam- ble Plaza, Cincinnati, Ohio 45202 (US). (74) Agent: KREBS, Jay A.; c/o THE PROCTER & GAMBLE COMPANY, Global IP Services, One Procter & Gamble Plaza, C9, Cincinnati, Ohio 45202 (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, 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: METHOD OF MAKING ACRYLIC ACID FROM LACTIC ACID OR LACTIDE USING MOLTEN SALT CATALYSTS Step 1 Step 2 Step 3 LA or lactide ► t = 5 h 2-BrPA t = 3 h 3-BrPA t = 0.5 h Acrylic Acid — T — 120°C Catalyst: PIL (Br) T = 180°C Catalyst: IL (Br) T — 180°C No catalyst; TOA ► L I Acrylic Acid FIG. 1 el (57) : A method of making acrylic acid in liquid phase by contacting a feed stream containing lactic acid, lactide, or mixtures 0 thereof with a molten salt catalyst comprising a protic ionic liquid (PIL), which contains a bromide anion (Br-), is provided.