MC-Color PU
Two-Component Aliphatic Polyurethane Floor Coating for UV-Stable, Colour-Fast Interior and Exterior Concrete Surfaces
Authorized Project Distributor — MC-Bauchemie India | Space Arc Engineering, Ghaziabad
Product Overview
MC-Color PU is a two-component, solvent-borne, aliphatic polyurethane protective floor and surface coating from MC-Bauchemie that provides the UV stability, colour retention, and long-term exterior durability that aromatic epoxy systems (such as MC-Color E) cannot match when exposed to sunlight. The key distinction between aromatic epoxy and aliphatic polyurethane chemistry is UV performance: aromatic epoxy coatings contain benzene ring structures in the polymer backbone that undergo photochemical degradation when exposed to UV radiation (sunlight) — the degradation manifests as yellowing, chalking, and loss of surface gloss within weeks to months of exterior exposure. Aliphatic polyurethane coatings, by contrast, use an aliphatic (non-aromatic, straight-chain) diisocyanate hardener that does not contain UV-sensitive aromatic structures, and the cured polymer is essentially UV-transparent — it does not absorb UV radiation at the wavelengths that cause photodegradation, so the colour, gloss, and surface integrity are maintained for years of exterior exposure. This UV stability is the reason aliphatic polyurethane coatings are specified as topcoats over aromatic epoxy or polyurethane primers on all outdoor applications — vehicle bodies, aircraft, architectural cladding panels, and outdoor concrete — wherever long-term colour and gloss retention are required. For concrete applications in the Delhi NCR outdoor environment — where UV irradiance in May and June (the peak summer UV period) is among the highest in India (solar UVI of 10 to 12 in June in Delhi), and where concrete surfaces are exposed to combined UV, high temperature, thermal cycling, and monsoon rain — the choice between aromatic epoxy and aliphatic polyurethane for an outdoor concrete coating is clear: the aliphatic PU will retain its colour, gloss, and mechanical properties for 3 to 5 years without significant visual degradation, while the aromatic epoxy would yellow and chalk within 3 to 6 months. Space Arc Engineering supplies MC-Color PU for building contractors, infrastructure developers, facility managers, and exterior concrete protection specialists across Ghaziabad, Delhi NCR, Noida, and Uttar Pradesh.
Applications
- Exterior car park and parking deck concrete — UV-stable coloured coating for parking deck surfaces exposed to sunlight and weather
- Airport apron and taxiway edge marking — UV and abrasion-resistant marking paint for outdoor airport pavement concrete
- Exterior concrete wall and facade coating — UV-stable decorative and protective coating for exterior RCC walls, retaining walls, and concrete cladding
- Rooftop equipment pad and utility area coating — UV-resistant coating for rooftop concrete plant platforms and equipment bases
- Sports facility and outdoor court concrete — colour-fast, abrasion-resistant coating for outdoor basketball, tennis, and sports court concrete
- Epoxy floor topcoat — UV-stable aliphatic PU topcoat applied over MC-Color E or epoxy floor systems to provide colour stability in naturally lit areas
Key Advantages
- Aliphatic isocyanate chemistry — no aromatic rings, no UV-induced yellowing or chalking — colour and gloss stable for 3 to 5 years of outdoor exposure
- UV-stable colour retention — retains original colour with minimal DE colour shift even after extensive UV exposure in Delhi NCR summer
- Excellent abrasion and scratch resistance — hard polyurethane film resists mechanical wear from vehicle tyres, foot traffic, and weather abrasion
- Chemical resistance — resists oils, fuels, dilute cleaning agents, rainwater, and bird droppings — suitable for outdoor and exposed industrial surfaces
- Flexible cured film — polyurethane elasticity accommodates minor thermal movement in concrete substrate without surface cracking
- Available in full RAL colour range — including safety colours, RAL standard shades, and special mixed colours for colour-coding and architectural applications
Technical Data
| Type | Two-component aliphatic polyurethane protective coating — A (polyol) + B (aliphatic HDI isocyanate hardener) — solvent-borne |
| Application Thickness | 80 to 150 microns dry film thickness per coat — two coats recommended for full coverage and colour depth |
| Pot Life | 2 to 3 hours at 23 degrees C — longer at low temperature, shorter at high temperature — plan batch size for weather conditions |
| UV Stability | Excellent — aliphatic chemistry provides minimal yellowing and chalking under outdoor UV exposure — QUV accelerated weathering tested |
| Abrasion Resistance | Good — Taber abrasion (CS10, 1000g, 1000 cycles) loss below 50 mg — suitable for pedestrian and light vehicle surfaces |
| Conformance | EN 1504-2 (Surface Protection of Concrete Structures) — DIN EN ISO 11507 (UV resistance testing) |
Get a Quote
+91 9999155255 | info@space-arc.com | Space Arc Engineering, Sahibabad, Ghaziabad
Frequently Asked Questions
For a multi-storey car park being built in Noida with exposed upper deck concrete and enclosed lower levels, what floor coating system should the structural consultant or facility developer specify, and when is MC-Color PU preferred over MC-Color E epoxy paint?
A multi-storey car park in Noida presents a range of concrete floor environments — from fully exposed upper roof deck to enclosed lower basement levels — each requiring a different floor coating specification optimised for the exposure conditions, traffic loading, and durability requirements. The coating choice between MC-Color PU aliphatic polyurethane and MC-Color E aromatic epoxy should be made level by level based on the UV exposure and aesthetic life expectancy requirements. Upper roof deck (fully exposed, UV and weather exposed): the upper parking deck concrete is exposed to full Delhi NCR sunlight (UV irradiance UVI 10 to 12 in peak summer), rain, thermal cycling (surface temperature from 8 degrees C in winter to 65 degrees C in peak summer), vehicular tyre loads, and bird droppings. For this level, MC-Color PU is the unambiguous choice: the aliphatic polyurethane chemistry provides the UV stability required to maintain colour and surface integrity over 3 to 5 years without maintenance recoating. MC-Color E applied to the exposed roof deck would chalk and discolour within 3 to 6 months, giving a poor appearance and requiring frequent recoating. In addition to UV stability, the exposed deck also needs a waterproofing or deck coating system to prevent rainwater infiltration into the concrete and through the deck into the levels below — a MC-Color PU coating alone at 150 to 300 microns DFT is a surface paint, not a waterproofing membrane, and may not provide adequate waterproofing for long-term deck integrity. For the fully exposed upper deck where waterproofing is a structural requirement (to protect the deck concrete and the levels below from water ingress), the specification should be: epoxy or PU waterproofing membrane (2 to 3 mm MC-Floor PU or similar polyurethane traffic membrane) plus a UV-stable aliphatic PU topcoat (MC-Color PU) for UV protection and aesthetics. Intermediate covered decks (covered but open-sided — indirect UV, weather exposure): covered but open-sided car park decks receive indirect UV and occasional wind-blown rain, but not direct solar radiation. On these levels, the concrete is not water-critical (covered) and the UV exposure is indirect and reduced. MC-Color E aromatic epoxy is acceptable on these levels if recoating every 2 to 3 years is planned, or MC-Color PU can be specified for a longer maintenance interval of 4 to 6 years. If budget permits, MC-Color PU on all covered levels is the more cost-effective long-term choice (fewer recoatings over the car park design life). Enclosed basement levels (no UV, controlled environment): in the fully enclosed basement parking levels, there is no UV exposure. MC-Color E aromatic epoxy provides adequate performance — the colour retention and surface gloss of MC-Color E in UV-free interior environments is acceptable for many years. MC-Color E is more cost-effective than MC-Color PU per square metre installed, so specifying MC-Color E on enclosed basement levels (where UV stability is irrelevant) and MC-Color PU on exposed and semi-exposed levels provides the optimum balance of performance and cost across the car park. Ramp concrete: ramped access sections are subjected to high point loads from vehicle tyres during turning and reversing manoeuvres (combined vertical and lateral tyre forces), high abrasion from tyre scrubbing, and exposure to engine oil, fuel, and washing water. A thicker, higher-performance coating — MC-Floor PU (polyurethane floor system) at 2 to 3 mm rather than the thin MC-Color PU or MC-Color E at 100 to 300 microns — provides the mechanical durability needed for ramp wear zones. Perimeter drain channels: concrete drainage channels on each deck level require a seamless, watertight, chemical-resistant lining — MC-Flex 1K polyurethane membrane or MC-Floor PU system applied to the channel concrete provides an appropriate lining. Space Arc Engineering provides car park deck waterproofing and floor coating specification support, and supplies MC-Color PU, MC-Color E, MC-Floor PU, and MC-Flex 1K for car park construction and renovation projects across Delhi NCR, Ghaziabad, Noida, and Uttar Pradesh.
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Space Arc Engineering is an Authorized Project Distributor for MC-Bauchemie India serving Delhi NCR, Ghaziabad, Noida and Uttar Pradesh.
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