Patent SG-11201900553P-A (SG)
Title: Method for producing a water-soluble thermally-crosslinkable polymeric material
Inventor: CHIANG CHUNG-YUAN
IPC: C09D4/00
Filed: 2017-09-14
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 29 March 2018 (29.03.2018) WIPO I PCT omit °nolo olum loom im iflo oimIE (10) International Publication Number WO 2018/055488 Al (51) International Patent Classification: C09D 4/00 (2006.01) C08G 73/00 (2006.01) B29D 11/00 (2006.01) (21) International Application Number: PCT/IB2017/055573 (22) International Filing Date: 14 September 2017 (14.09.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/396,843 20 September 2016 (20.09.2016) US (71) Applicant: NOVARTIS AG [CH/CH]; Lichtstrasse 35, 4056 Basel (CH). (72) Inventors: CHIANG, Chung-Yuan; c/o Alcon Research, Ltd., 11460 Johns Creek Parkway, Johns Creek, Georgia 30097 (US). QIU, Yongxing; c/o Alcon Research, Ltd., 11460 Johns Creek Parkway, Johns Creek, Georgia 30097 (US). TALLAU, Kelly Kayi; c/o Alcon Research, Ltd., 11460 Johns Creek Parkway, Johns Creek, Georgia 30097 (US). DRIVER-SCOTT, Angela; c/o Alcon Research, Ltd., 11460 Johns Creek Parkway, Johns Creek, Georgia 30097 (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). Declarations under Rule 4.17: as to applicant's entitlement to apply for and be granted a patent (Rule 4.17(ii)) 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)) 1-1 00 00 I I - (54) Title: METHOD FOR PRODUCING A WATER-SOLUBLE THERMALLY-CROSSLINKABLE POLYMERIC MATERIAL 1 1 il f ) (57) : The invention is related to a cost-effective method for producing water-soluble thermally-crosslinkable hydrophilic polymeric materials. Resultant materials can fmd particular use in preparing a packaging solution used for packaging and autoclaving medical devices, especially contact lenses. Those packaging solutions are especially suitable for forming a relatively-thick and soft hydrogel coatings on contact lenses or medical devices according to an in-package-crosslinking (IPC) processes. The resultant non- el silicone hydrogel coatings can have a superior lubricity (a friction rating of 0) with minimized or no surface cracking.