Since 1970
Since 1970
Indofil MC 401 | High-Performance Acrylic Emulsion for Flexible Cementitious Coatings
Indofil MC 401 is a premium, plasticizer-free acrylic-styrene copolymer emulsion explicitly engineered to modify hydraulic binders and flexible cementitious compositions. Delivering an exceptional 56% active solids profile, this aqueous, anionic dispersion imparts outstanding elongation, crack-bridging capabilities, and water resistance to cement mortars. With superior adhesion to old concrete and masonry, as well as excellent aging and light stability, it is the ideal binder for high-performance two-component waterproofing systems, flexible adhesive mortars, and flat roof coatings.
Product Overview
Indofil MC 401 is an industrial-grade, high-solids aqueous acrylic-styrene copolymer dispersion engineered specifically for the modification of hydraulic binders, cementitious mortars, and bitumen emulsions. Formulated without plasticizers, this anionic emulsion exhibits exceptional compatibility with cement matrices, transforming rigid mortars into highly flexible, elastomeric membranes.
Upon curing, Indofil MC 401 develops a clear, tacky, and highly elastic film that provides a superior energy barrier against water ingress while accommodating structural movements. It is the premier choice for formulators developing advanced, two-component ($2\text{K}$) flexible waterproofing systems capable of bridging hairline cracks on flat roofs, balconies, and distressed concrete structures.
Exceptional Elongation & Crack Bridging: Imparts elastomeric properties to standard cementitious mortars, allowing the cured coating to stretch and bridge structural cracks under mechanical stress.
High Active Solids Content: Features a high solid delivery ($56 \pm 1\%$), allowing formulators to achieve high-build, robust coatings with excellent film formation thickness.
Tenacious Wet & Dry Adhesion: Ensures a permanent, high-strength bond when applied to challenging substrates, including aged concrete, brickwork, and existing masonry surfaces.
Advanced Chemical & Weathering Resistance: Provides superior resistance to alkaline hydrolysis, environmental aging, and UV light degradation, ensuring long-term structural durability.
Bitumen Compatibility: Blends seamlessly with bitumen emulsions, making it highly versatile for formulating premium modified bituminous flat roof coatings and granular aggregate binders.
Flexible Waterproofing Slurries: Two-component ($2\text{K}$) elastomeric waterproofing membranes for flat roofs, wet areas, and water retaining structures.
Adhesive Mortars: Flexible, high-adhesion hydraulic mortars for laying large-format tiles and natural stone over demanding substrates.
Formulation Guidance: Generally, a modification ratio of 20% – 30% polymer solids based strictly on the dry weight of the cement yields optimum waterproofing and flexibility. Supplementary ingredients such as silica flour, calcium carbonate (chalk), ground quartz, and defoamers should be incorporated based on specific performance targets.
| Parameter | Specification |
| Product Nature | Aqueous, Anionic, Plasticizer-Free Acrylic-Styrene Copolymer |
| Visual Appearance | Milky white emulsion |
| Solid Content | 56.0 ± 1.0 % |
| pH Value (As Such) | 7.0 – 8.5 |
| Viscosity (Brookfield LVF # 1/60 @ 25°C) | 500 – 1500 cps |
| Specific Gravity @ 30°C | 1.03 ± 0.2 |
| Film Test (250-micron, ambient temp) | Clear, free from bits, tacky |
Industrial Packaging: Supplied in heavy-duty 245 kg HDPE containers, optimized for bulk manufacturing and robust transport protection.
Storage Guidelines: Non-flammable and non-combustible. Must be stored in a cool environment under shade. Keep tightly closed and completely protected from direct sunlight exposure to maintain emulsion stability.
Shelf Life: Stable for up to 12 months from the date of manufacturing when kept in its original, unopened packaging under recommended storage conditions.