Patent SG-11201901027W-A (SG)
Title: Process for the purification of the solvent deriving from the production of elastomeric blends
Inventor: GATTI GABRIELE
IPC: B01D15/00
Filed: 2016-08-11
Abstract: 4 (36a) (36c) (20) (13) ( 14) (39) V ( 38 ) 45 N- L (19) (39a) 1 1 :. (36b) (37) (36) (17 • (18) (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 15 February 2018 (15.02.2018) WIPO I PCT Iiiimmolimionotioloomolommomumomovill (10) International Publication Number WO 2018/029716 Al (51) International Patent Classification: BOlD 3/36 (2006.01) BOlD 3/00 (2006.01) BOlD 11/04 (2006.01) BOlD 3/14 (2006.01) BOlD 15/00 (2006.01) (21) International Application Number: PCT/IT2016/000195 (22) International Filing Date: 11 August 2016 (11.08.2016) (25) Filing Language: Italian (26) Publication Language: English (71) Applicants: VERSALIS S.P.A. [IT/IT]; Piazza Boldrini, 1, 200097 San Donato Milanese (MI) (IT). EVE RUBBER INSTITUTE CO., LTD. [CN/CN]; No. 43 Zhengzhou Rd. North District, Qingdao 266045 (CN). (72) Inventors: GATTI, Gabriele; c/o Versalis S.P.A., Piaz- za Boldrini, 1, 200097 San Donato Milanese (MI) (IT). WANG, Jiye; c/o EVE Rubber Research Institute Co., Ltd., No. 43 Zhengzhou Rd. North District, Qingdao 266045 (CN). CAVALLO, Claudio; c/o Versalis S.P.A., Piazza Boldrini, 1, 200097 San Donato Milanese (MI) (IT). SONG, Jianjun; c/o EVE Rubber Research Institute Co., Ltd., No. 43 Zhengzhou Rd. North District, Qingdao 266045 (CN). (74) Agent: MARTURANO, Pasqualino; Barzano' & Zanardo Milano S.p.A., Via Borgonuovo, 10, 20121 Milano (IT). (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, 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, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, (54) Title: PROCESS FOR THE PURIFICATION OF THE SOLVENT DERIVING FROM THE PRODUCTION OF ELAS- TOMERIC BLENDS (8) (15) ( 9 ) (30) 1. ( la) (31) D, L(32) (33) 0, (25) (27) (35) , (34a) - • -s \1 -4. (18a) (34b) A' Fig. 1 ( 7 ) 4 (6) (2) (1) ( 5 ) (22) (28 (23), L, (2 (26) N ct O cc O O (57) : Process for the purification of the solvent deriving from the production of an elastomeric blend comprising the following steps: • (a) optionally, subjecting said solvent to a pre-washing (2) in the presence of at least one acid or basic aqueous solution; • (b) feeding said solvent to a liquid-liquid separation column (7); • (c) feeding the stream leaving the head of said liquid-liquid separation column (7) to an azeotropic distillation column (21); • (d) feeding the stream withdrawn laterally (side-withdrawal) from said azeotropic distillation column (21) to an adsorption section (34a/b); Said process allows to obtain a polymer grade solvent having a quality suitable for being used indifferently and contemporaneously in various types of production plants of elastomeric (co)polymers, i.e. in plants wherein an anionic (co)polymerization is carried out, and also in plants wherein a Ziegler-Natta (co)polymerization is carried out. [Continued on next page] WO 2018/029716 Al IMEDIMOMMIDIRE10101011010HMOMMOVOE# 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))