Patent SG-11201807327X-A (SG)
Title: Shape memory polymer, formulation for, method of forming and device including the same
Inventor: CHOONG YU YING
IPC: C08F20/06
Filed: 2017-04-20
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property MD HIM 01E101011M HO 11111 0 I 011111111111111101110111110 HOED Organization International Bureau (10) International Publication Number (43) International Publication Date ......0\" WO 2017/188896 Al 02 November 2017 (02.11.2017) WIP0 I PCT (51) International Patent Classification: (72) Inventors: CHOONG, Yu Ying, Clarrisa; c/o Nanyang C08F 20/06 (2006.01) B33Y 70/00 (2015.01) Technological University, 50 Nanyang Avenue, Singapore B29C 61/06 (2006.01) B33Y 80/00 (2015.01) 639798 (SG). MALEKSAEEDI, Saeed; c/o Singapore In- C08F 2/48 (2006.01) B29C 67/00 (2017.01) stitute of Manufacturing Technology, 2 Fusionopolis Way, (21) International Application Number: #08-04, Innovis, Singapore 138634 (SG). ENG, Hengky; c/ o Singapore Institute of Manufacturing Technology, 2 Fu- PCT/SG2017/050223 sionopolis Way, #08-04, Innovis, Singapore 138634 (SG). (22) International Filing Date: SU, Pei-Chen; c/o Nanyang Technological University, 50 20 April 2017 (20.04.2017) Nanyang Avenue, Singapore 639798 (SG). (25) Filing Language: English (74) Agent: VIERING, JENTSCHURA & PARTNER LLP; P.O Box 1088, Rochor Post Office, Rochor Road, Singapore (26) Publication Language: English 911833 (SG). (30) Priority Data: (81) Designated States (unless otherwise indicated, for every 10201603355Q 27 April 2016 (27.04.2016) SG kind of national protection available): AE, AG, AL, AM, (71) Applicants: NANYANG TECHNOLOGICAL AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, UNIVERSITY [SG/SG]; 50 Nanyang Avenue, Singapore CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, 639798 (SG). AGENCY FOR SCIENCE, TECHNOL- DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, OGY AND RESEARCH [SG/SG]; 1 Fusionopolis Way, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, — #20-10, Connexis North Tower, Singapore 138632 (SG). 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, = (54) Title: SHAPE MEMORY POLYMER, FORMULATION FOR, METHOD OF FORMING AND DEVICE INCLUDING THE SAME FIG. IG = = HO ioo 0— =N r monomer = Acrylate \ = 102 FIG.1c Cross linker = = N 104 HO Pholonliator = N l G = 106 = Pholoabsorber = - 108 FIG. ID = L _. - ON Il • 4 111 4 11 H N , N (:: ` mob HC GC GC 0 1-1 0 (57) : A formulation for forming a shape memory polymer is disclosed. The formulation comprises an acrylate monomer such ---, as tert-butyl acrylate or tert-butyl methacrylate, a cross-linker such as di(ethylene glycol) diacrylate which forms cross-links with the N acrylate monomer, a photoinitiator such as BAPO which initializes the cross-linking upon exposure to light and a photoabsorber for 1-1 C controlling the rate of cross-linking. The concentration of the photoabsorber is from 0.1 -10 wt.% of the formulation. A method of ei forming the shape memory polymer, and a device comprising the polymer such as a suture, stent or a dental aligner is also disclosed. C [Continued on next page] WO 2017/188896 Al MIDEDIMOMOIDEIROIDEMOMMHHEIEROMEMOIMIE 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))