Patent SG-11201808677P-A (SG)
Title: Light-weight & high strength non-asbestos corrugated fiber cement roofing sheets manufactured by autoclave method
Inventor: SATYANARAYANA D
IPC: C04B28/04
Filed: 2017-11-20
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 1 11111 1011111 11 111111 0111 11111 11111 1111 1 0 111 11111 11111 11111 0111 viii 111111111 0 11 1111 Organization --- -- International Bureau (10) International Publication Number (43) International Publication Date .......°\" WO 2019/069315 Al 11 April 2019 (11.04.2019) WIP0 I PCT (51) International Patent Classification: C04B 28/04 (2006.01) (21) International Application Number: PCT/IN2017/050541 (22) International Filing Date: 20 November 2017 (20.11.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 201741035233 05 October 2017 (05.10.2017) IN (71) Applicant. HIL LIMITED (FORMERLY HYDER- ABAD INDUSTRIES LIMITED) [IN/IN]; SLN Termi- nus, 7th Floor, Near Botanical Garden, Gachibowli, Hyder- abad 500032 (IN). (72) Inventor: SATYANARAYANA, D.; Head R & D, Hil Limited (formerly Hyderabad Industries Limited), Erragad- da, Sanatahnagar, Hyderabad 500018 (IN). 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. (81) 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). (84) . Published: — with international search report (Art. 21(3)) — with amended claims (Art. 19(1)) Il -.0 !C kin 11 (54) Title: LIGHT-WEIGHT & HIGH STRENGTH NON-ASBESTOS CORRUGATED FIBER CEMENT ROOFING SHEETS f . ) MANUFACTURED BY AUTOCLAVE METHOD 0 . 1 0 (57) : Light weight & high strength non-asbestos corrugated fiber cement roofing sheets by autoclave method. A light weight ---- and high strength non-asbestos conugated fiber cement roofing sheets comprising, Portland cement, pozzolonic material, fibrous rein- Il forcing material, bentonite clay and additives wherein said fibrous reinforcing material is a combination of plurality of fibers having 8 to O 20% of cellulose fiber, 0 to 3% of modified PET fibers and 0 to 6% other fibers optionally containing 0 to 3% rock wool/modified rock el wool, organic fiber like jute, bamboo and mineral fibers selected from wollastonite modified or unmodified, sepiolite and mineral fiber. C