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Antimicrobial Transparent Coating for Surfaces and Surrounding Air

Technology Overview

Antibacterial coatings are rapidly emerging as a primary component of the global mitigation strategy of bacterial pathogens. The team has developed a transparent antimicrobial coating that can be applied on a number of surfaces without tarnishing their aesthetic appearance.

Unlike other antimicrobial coatings, this technology uses a special in-situ technique for metal oxide nanoparticles to form while the coating is being applied. As a result, the nanoparticles protrude out of the coating matrix, resulting in a higher particle exposure. The antibacterial mechanism is governed by a photocatalytic reaction by forming reactive oxygen species (ROS). Most importantly, this technology eradicates microorganisms on the coating applied surface as well as in the surrounding air. 

Technology Features & Specifications

  • Composition: Metal-oxide based active component in PU or alkyd resin mediums
  • Coating appearance: (i) transparent, clear coating, (ii) opaque coating
  • Microbial inhibition in the surrounding air: 100% reduction after 5 hours [Settle plate method according to the 1/1/1 scheme (Pasquarella et al.)]
  • Microbial inhibition on surface (ISO 22196:2011 / JIS Z 2801): >99% for clear coating; >99.99% for opaque coating
  • Durability of the coating is estimated to be up to 6 months (subject to varying ambient conditions)
  • Abrasion rating 25 (ASTM D968)
  • Applicable on wood, stainless steel and plastics (PP, PET, PVC)
  • Coating thickness: spray coating: 10-20 µm; brush coating: 40-60 µm

Potential Applications

This coating can be applied in many market segments such as:

  • Hotels
  • Supermarkets
  • Hospitals
  • Office spaces
  • Public places
  • Residential
  • Airport interior
  • Food and pharmaceutical storage centers
  • Plastic and stainless steel household items (switches, claddings, etc.)

Market Trends and Opportunities

According to a report by Markets and Markets, the antimicrobial coatings market is projected to reach USD 4.2 billion by 2021, at a CAGR of 12.1% from 2016 to 2021. Increased demand in indoor air / HVAC and medical application segments, followed by favourable government regulation is attracting the global antimicrobial coatings manufacturers to invest in this market. Increasing awareness in developing countries also presents an opportunity for market players.

Customer Benefits

  • Provides protection against harmful microorganisms on surfaces and the surroundings
  • Effective under visible light conditions
  • No health hazards compared to other silver-based antimicrobial coatings
  • Coating can be transparent, protecting the aesthetic appearance of surfaces
  • Easy manufacturing process and application process

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