Patent SG-11201908452X-A (SG)
Title: Clay-polyacrylate composites suspension via in situ polymerization
Inventor: LI XU
IPC: C08K3/34
Filed: 2018-03-14
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 20 September 2018 (20.09.2018) WIPO I PCT ~~~~~~~~~~~~~ 011101010VIIIOH olo omoimoimmoliflo Hs (10) International Publication Number WO 2018/169490 Al (51) International Patent Classification: CO9D 133/04 (2006.01) C08F 2/18 (2006.01) C08L 33/06 (2006.01) C08K 3/34 (2006.01) C08K 9/06 (2006.01) (21) International Application Number: PCT/SG2018/050115 (22) International Filing Date: 14 March 2018 (14.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 10201702064P 14 March 2017 (14.03.2017) SG (71) Applicant: AGENCY FOR SCIENCE, TECHNOLO- GY AND RESEARCH [SG/SG]; 1 Fusionopolis Way, #20-10 Connexis North Tower, Singapore 138632 (SG). (72) Inventors: LI, Xu; c/o Institute of Materials Research & Engineering, 2 Fusionopolis Way, Innovis, #08-03, Sin- gapore 138634 (SG). ZHANG, Yu; c/o Institute of Ma- terials Research & Engineering, 2 Fusionopolis Way, In- novis, #08-03, Singapore 138634 (SG). TAN, Ming Yan; c/o Institute of Materials Research & Engineering, 2 Fu- sionopolis Way, Innovis, #08-03, Singapore 138634 (SG). WONG, Siew Yee; c/o Institute of Materials Research & Engineering, 2 Fusionopolis Way, Innovis, #08-03, Singa- pore 138634 (SG). ZHANG, Xi Kui; c/o Institute of Mate- rials Research & Engineering, 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634 (SG). (74) Agent: VIERING, JENTSCHURA & PARTNER LLP; P.O. Box 1088, Rochor Post Office, Rochor Road, Singa- pore 911833 (SG). = (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). Published: — with international search report (Art. 21(3)) 1-1 O 71- 1-1 00 1-1 O C (54) Title: CLAY-POLYACRYLATE COMPOSITES SUSPENSION VIA IN SITU POLYMERIZATION (57) : The present disclosure relates to a clay-polyacrylate composite comprising layers of clay intercalated with polyacry- late, wherein the layers of clay comprises at least one organosilane coupling agent comprising an acrylate moiety; and wherein the polyacrylate comprises a first acrylate monomer and a second acrylate monomer having different solubility. A surfactant-free method of synthesizing the said clay-polyacrylate composite and a method for coating are also provided. In a preferred embodiment, the first acrylate monomer is a hydrophilic acrylate monomer, e.g. 2-hydroxyethyl acrylate, and the second acrylate monomer is a hydrophobic acrylate monomer, e.g. 2-ethylhexyl acrylate. The clay-acrylate composite can be used for forming a barrier coating, which exhibits low water and low oxygen permeability.