Patent SG-11201909033P-A (SG)
Title: Crosslinked polymer membranes and methods of their production
Inventor: VAUGHN JUSTIN TYLER
IPC: B01D53/22
Filed: 2018-05-03
Abstract: Denseskin'Hayer • ;,4, 10gm JEOL 11,50D 3.0kV ED SEM 1111) 64enni Porous substructure Dense \"skin\" lay. , Porous substructul (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 08 November 2018 (08.11.2018) WIPO I PCT omit VIII °nolo oloionmEH 110 111110 oimIE (10) International Publication Number WO 2018/204580 Al (51) International Patent Classification: BOlD 67/00 (2006.01) BOlD 71/16 (2006.01) BOlD 53/22 (2006.01) BOlD 71/78 (2006.01) (21) International Application Number: PCT/US2018/030793 (22) International Filing Date: 03 May 2018 (03.05.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/501,363 04 May 2017 (04.05.2017) US (71) Applicant (for all designated States except US): SAUDI ARABIAN OIL COMPANY [SA/SA]; 1 Eastern Avenue, Dhahran, 31311 (SA). (72) Inventors; and (71) Applicants (for US only): VAUGHN, Justin Tyler [US/US]; c/o Aramco Services Company, 400 Technolo- gy Square, Cambridge, Massachusetts 02139 (US). SUN- DELL, Benjamin James [US/US]; c/o Aramco Services Company, 400 Technology Square, Cambridge, Massachu- setts 02139 (US). (74) Agent: LYON, Charles E. et al.; Choate, Hall & Ste- wart LLP, Two International Place, Boston, Massachusetts 02110 (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, (54) Title: CROSSLINKED POLYMER MEMBRANES AND METHODS OF THEIR PRODUCTION FIG. 8 O cc O 00 O C (57) : Described in the present application are methods of producing silane-crosslinked polymer membranes at moderate tem- peratures using acid catalysts that, in certain embodiments, result in membranes with unexpectedly high permeabilities and selectivities. In certain embodiments, grafting and crosslinking of the silanes occur by immersing a preformed membrane in a solution comprising a silane and an acid catalyst. Alternatively, in certain embodiments, grafting of silanes to a polymer occurs in the presence of acid catalyst in solution and subsequent casting and drying produces crosslinked membranes. In certain embodiments, an acid catalyst is a weak acid catalyst. Also described in the present application are asymmetric crosslinked polymer membranes with porous layers. In certain embodiments, crosslinked cellulose acetate membranes have permeability up to an order of magnitude greater than the permeability of unmodified cellulose acetate membranes. The membranes have porous layers with a high porosity due to their processing in moderate [Continued on next page] WO 2018/204580 Al MIDEDIM011010EIRDERI00101011111111111111111111110111110111111111111 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). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(11)) as to the applicant's entitlement to claim the priority of the earlier application (Rule 4.17(iii)) Published: with international search report (Art. 21(3)) with amended claims (Art. 19(1)) conditions.