WO 2025/057181 A1

A gypsum plaster composition and a method of manufacturing the same

(22) 30.08.2024

(43) 20.03.2025

(57) The present application provides a gypsum plaster composition, comprising 25 to 75 % of gypsum plaster; 25 to 75 % of filler; 0,005 to 0,1 % of retarder; 0.015 to 0.1 % of heat resistant accelerator; 0.05 to 0,5 % of modified cellulose ether; 0.05 to 3 % of re-dispersible polymer; and 0 to 0.5 % of coloring agent. Such a gypsum plaster composition exhibits improved direct adhesion on a reinforced cement concrete (RCC) surface. Further the application also provides a method of manufacturing a gypsum plaster composition and method of applying the same.

(71) S. Balakrishnan (IN), Saint-Gobain India Pvt. Ltd. (Research & Development) Tharamani, Chennai-600 113, Tamil Nadu (IN)

(84) ARIPO (13W, CV, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SC, 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, ME, 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).

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