Patent SG-11201807983P-A (SG)
Title: Hydrophobic polyethylene membrane for use in venting, degassing, and membrane distillation processes
Inventor: CHOI WAI
IPC: B01D71/26
Filed: 2017-03-17
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property —, Organization 11111111011110111010101111101011111011101111011011101011111011111101111011111 International Bureau .... .51 j (43) International Publication Date ..... ..or::,,, (10) International Publication Number WO 2017/161241 Al 21 September 2017 (21.09.2017) WIP0 I P C T (51) International Patent Classification: (74) Agents: SZYMANSKI, Brian, E. et al.; Entegris, Inc., BOLD 71/26 (2006.01) 129 Concord Road, Building 2, Billerica, MA 01821 (US). (21) International Application Number: (81) Designated States (unless otherwise indicated, for every PCT/US2017/022913 kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (22) International Filing Date: BZ, 17 March 2017 (17.03.2017) DO, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (25) Filing Language: English HN, KP, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (26) Publication Language: English MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, (30) Priority Data: NI, 62/310,378 18 March 2016 (18.03.2016) US RU, TH, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, (71) Applicant: ENTEGRIS, INC. [US/US]; 129 Concord ZA, ZM, ZW. Road, Building 2, Billerica, MA 01821 (US). (84) Designated States (unless otherwise indicated, for every (72) Inventors: CHOI, Wai, Ming; 1569 Commonwealth Av- kind of regional protection available): ARIPO (BW, GH, enue, West Newton, MA 02465 (US). JABER, Jad, Ali GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, Jaber; 226 Hudson Road, Sudbury, MA 01776 (US). TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, GOEL, Vinay, Goel; 129 Concord Road, Building 2, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, Billerica, MA 01821 (US). KALYANI, Vinay; 129 Con- DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, cord Road, Building 2, Billerica, Massachusetts 01821 LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, = (US). DENNIS, Anthony; 129 Concord Road, Building 2, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, Billerica, MA 01821 (US). GW, KM, ML, MR, NE, SN, TD, TG). [Continued on next page] = = Title: HYDROPHOBIC POLYETHYLENE MEMBRANE FOR USE IN (54) VENTING, DEGASSING, AND MEMBRANE DIS - = — TILLATION PROCESSES = ,. ,.‘% ‘ • k • & ., \w ' an • .e • ,, • . •%„%', '` • = (57) : Described is a polyethylene mem- brane and in particular an ultra-high molecular , weight polyethylene membrane that provides a high air permeability and is hydrophobic. The membranes — = = : \ , • ' s \\. . ' , . ,, •. .\\\.; ` \ . , s sk' .\\\`'-' '* , , , • \ 4 • have small pores and are suitable for sterilization by exposure to gamma radiation. The membranes can be \ ‘‘ ,• k ' \ \" \\`‘‘ k ' s:''t\"„\ made by methods that involve one or more of stretching the membrane and grafting hydrophobic monomers onto the membrane surface. A perfluorin- = = = ::\\:\ .., \ .A.* . N •‘ - '''' .. • • k\ . •X \.\\ \ \' , '% ' V‘ ' as ated monomer, such perfluoro-n-octyl acrylate, an c be grafted to one or more surfaces of the mem- brane. The membranes have a high flow rate com- = \\ zo -,, . ,t, A \\\ ,,,, ,.. ' \'` • • s\ \ s ' • \ :., „ ,, - pared to unstretched or engrafted membranes. , `- t*k, .., *A. , ',N. N. %.,,, \ ;,,,.\\„ .k.,:s. , .. ,., •': \ \ s \\I ' ' \ ''-‘ Il ' .4 . \ .. ,-1 : \\ ,‘ • s t. _ • - •'k'' ' ''' \"'' \ ,\ N \,,,,,, \ • ,,,,,, * 71' ei .' , , , „V‘ ;;; : ;,,, .,\"ia \ k4, ''' 2.02 , ,616 [qv m. ' % ,, P.N. .,:.:‘ s ' ''S;V4t•,., ...,„, s •A, eVb HPN x.1.4 mrit ;apQt Det ` — '40 OPin — ' Il 2 07 30 PM 15 0 1 , ' i5OCC SL7 r -, m 54O3 uli Y. 12,5 FYI's, i 40 ETD , sIdel Il --...., FIG. 1B IN Il 0 ei 0 WO 2017/161241 Al 1#11101M01101DION0101011111111H11111010E10111111011110111111 Published: — with international search report (Art. 21(3))