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HEARST® RD 503M is a redispersible polymer powder produced by spray-drying special water-based emulsion, mostly based on vinyl acetate and ethylene. It dissolves in water easily and quickly forms emulsion.
Type | HEARST -503M | Key Properties | -Supply high flexibility - Increase adhesion strength - Improves workability - Improve water proofing of mortar - Reduce water absorption |
Polymer composition | VAC/E | ||
Protective colloid | Polyvinyl alcohol (PVA) | ||
Appearance | White powder, freely | ||
Solid content | ≥98.0% | ||
Ash content | 11% ±2 | ||
Stacking density | 400-600 g/L | Application Range | - Skim coat (Putty) - No Shrink Grout - EIFS system mortar - Tile adhesive/ Tile joint filler - Self-leveling mortar |
Average particle size | ~80 μm | ||
pH Value | 5.0-8.0 | ||
Glass transition | 3℃ | ||
Minimum film-forming T | 0℃ |


Shandong Hearst Building Material Co.,Ltd is located in Yucheng City, 40kms from Ji’nan, the provincial capital of Shandong. It is a national high-tech enterprise with research, development, production, sales and technical services. The company has a fixed assets over than 100 billion Yuan, and an area of 50,000m2, while construction area 26,000m2. The company currently has 106 employees, including 60 different kinds of technicians, and 22 of them with senior professional titles.
Relies on strong financial strength, the company imported full set industry-leading level production line and testing equipment from Germany, created the production base which matches the foreign advanced technology requirements, and established the Hearst new building materials research and development center. With annual output 16,000MTS, Hearst has become one of the largest redispersible polymer powder manufacturers in China. The company not only has advanced technology, highly automated production equipment, but also first grade testing equipment and professional experienced business personnel, which guarantees good and stable quality products and best technical suggestions to the clients.









A. Standard Packing of Redispersible Polymer Powder/RDP: In 25kg paper bags inner with PE bags
B. Big Bag or other special packages are possible on request.
Store it in a cool, dry place below 30°C and protected against humidity and pressing, since the goods is thermoplastic, storage time should not exceed six months.

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