Patent SG-11201804675Y-A (SG)
Title: Concentrated photoactive, neutral titanium dioxide sol
Inventor: KERROD JULIE
IPC: C01G23/053
Filed: 2016-12-09
Abstract: Title: CONCENTRATED PHOTOACTWE, NEUTRAL TITANIUM DIOXIDE SOL 0 /0 NOx reduction of naturally weathered sols on concrete coated at 109/m*2 TiO2 70 60 50 40 30 20 10 0 test (1`\"4412-12,,, 0 0,, 'Sy, ca . 4 -* concentrated sols FIG. 1 (57) : The present disclosure relates to methods of preparing sols of titanium dioxide nanoparticles that are photoactive, neutral, and in a substantially concentrated foiin. The methods particularly provide for concentrated sols in light of washing and dewatering under low cation concentrations and utilizing rapid peptizing through addition of the filter case to the peptizing agent. Concentrated acid may be utilized to maintain high TiO 2 concentration while still avoiding precipitation of the colloidal Ti0 2 . Con- centrated photoactive, neutral titanium dioxide sols are also provided as well as compositions thereof and photoactive coatings formed therewith. (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau 111111111M 11111111111111111111111111111111111111111111111111111111111111R111111111111111 (10) International Publication Number WO 2017/098473 Al WIPO I PCT (43) International Publication Date 15 June 2017 (15.06.2017) 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, 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: (51) International Patent Classification: CO1G 23/04 (2006.01) BO1J 13/00 (2006.01) BOM 37/03 (2006.01) CO1G 23/047 (2006.01) BOM 37/04 (2006.01) CO1G 23/053 (2006.01) (21) International Application Number: PCT/IB2016/057507 (22) International Filing Date: 9 December 2016 (09.12.2016) Filing Language: English (25) (26) (30) English Publication Language: Priority Data: 62/265,530 10 December 2015 (10.12.2015) US (71) Applicant: CRISTAL USA INC. [US/US]; 20 Wight Av- enue, Suite 150, Hunt Valley, Maryland 21030 (US). (72) Inventors: KERROD, Julie; 1 Mount Royale Close, Ul- ceby Lincolnshire DN39 6RX (GB). WAGSTAFF, An- thony; 57 Doncaster Road, Gunness, Scunthorpe Lin- colnshire DN15 8TG (GB). (74) Agent: CAGLE, Ryan W.; Womble Carlyle Sandridge & Rice, LLP, Attn: Patent Docketing, P.O. Box 7037, At- lanta, Georgia 30357-0037 (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, as to applicant's entitlement to apply for and be granted a patent (Rule 4.170) 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)) W O 20 17 /098 47 3 Al