Painting & Coating Industry (PCI) logo Powder coating summit logo
  • Sign In
  • Create Account
  • Sign Out
  • My Account
  • NEWS
  • PRODUCTS
  • MATERIALS
  • TECHNOLOGIES
  • RESOURCES
  • EVENTS
  • DIRECTORIES
  • EMAGAZINE
  • CONTACT
  • SIGN UP!
cart
facebook twitter linkedin youtube
  • NEWS
  • Latest News
  • Market Trends & Reports
  • Price Alerts
  • Subscribe to eNewsletters
  • Global Top 10/ PCI 25
  • Weekly Featured Article
  • COATLE Word Game
  • PRODUCTS
  • Product News
  • Must See Products and Services
  • MATERIALS
  • Additives
  • Resins/Polymers
  • Pigments
  • Equipment
  • Distributors
  • TECHNOLOGIES
  • Adhesives
  • Architectural Coatings
  • FINISHING
  • Industrial Coatings
  • Nanotechnology
  • Powder Coatings
  • Solventborne
  • Special Purpose Coatings
  • Sustainability
  • UV Coatings
  • Waterborne
  • FINISHING
  • Finishing News
  • Finishing Technologies
  • Finishing Equipment
  • Finishing Today
  • RESOURCES
  • Columns
  • Blogs
  • Coatings Supplier Handbook
  • Podcasts and Videos
  • PCI Store
  • Classifieds
  • eBooks
  • Sponsor Insights
  • White Papers
  • COATLE Word Game
  • Columns
  • Ask Joe Powder
  • Did you know?
  • Distribution Dive
  • Focus on Canada
  • Formulating With Mike
  • Innovation Insights
  • Moody's Coatings Conundrums
  • Powder Coating Perspectives
  • Target the Market
  • TiO2 Insider
  • Blogs
  • Editor's Viewpoint
  • Industry Insights
  • Podcasts and Videos
  • COAT-IT! Podcast
  • Videos/PCI TV
  • EVENTS
  • Coatings Trends & Technologies Summit
  • Paint and Coatings Academy
  • Webinars
  • Calendar of Events
  • Lifetime Achievement Award
  • DIRECTORIES
  • Buyer's Guide
  • Equipment Directory
  • Materials Directory
  • EMAGAZINE
  • Current Issue
  • eMagazine Archive
  • China Issue Archive
  • Editorial Advisory Board
  • CONTACT
  • Contact Us
  • Advertise
  • Subscribe to eMagazine
  • Subscribe to eNewsletters
Painting & Coating Industry (PCI) logo Powder coating summit logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Painting & Coating Industry (PCI) logo Powder coating summit logo
  • NEWS
    • Latest News
    • Market Trends & Reports
    • Price Alerts
    • Subscribe to eNewsletters
    • Global Top 10/ PCI 25
    • Weekly Featured Article
    • COATLE Word Game
  • PRODUCTS
    • Product News
    • Must See Products and Services
  • MATERIALS
    • Additives
    • Resins/Polymers
    • Pigments
    • Equipment
    • Distributors
  • TECHNOLOGIES
    • Adhesives
    • Architectural Coatings
    • FINISHING
      • Finishing News
      • Finishing Technologies
      • Finishing Equipment
      • Finishing Today
    • Industrial Coatings
    • Nanotechnology
    • Powder Coatings
    • Solventborne
    • Special Purpose Coatings
    • Sustainability
    • UV Coatings
    • Waterborne
  • RESOURCES
    • Columns
      • Ask Joe Powder
      • Did you know?
      • Distribution Dive
      • Focus on Canada
      • Formulating With Mike
      • Innovation Insights
      • Moody's Coatings Conundrums
      • Powder Coating Perspectives
      • Target the Market
      • TiO2 Insider
    • Blogs
      • Editor's Viewpoint
      • Industry Insights
    • Coatings Supplier Handbook
    • Podcasts and Videos
      • COAT-IT! Podcast
      • Videos/PCI TV
    • PCI Store
    • Classifieds
    • eBooks
    • Sponsor Insights
    • White Papers
    • COATLE Word Game
  • EVENTS
    • Coatings Trends & Technologies Summit
    • Paint and Coatings Academy
    • Webinars
    • Calendar of Events
    • Lifetime Achievement Award
  • DIRECTORIES
    • Buyer's Guide
    • Equipment Directory
    • Materials Directory
  • EMAGAZINE
    • Current Issue
    • eMagazine Archive
    • China Issue Archive
    • Editorial Advisory Board
  • CONTACT
    • Contact Us
    • Advertise
    • Subscribe to eMagazine
    • Subscribe to eNewsletters
  • SIGN UP!
Paint and Coatings AdditivesSpecial Purpose CoatingsWaterborne Coatings

Cleaning Up the Coatings Industry with New Anti-Microbial Technology

By James Rapley
pci0223-Microban-1334133003-v1-1170.jpg

frentusha, iStock / Getty Images Plus, via Getty Images

February 15, 2023

Public awareness surrounding cleanliness has grown rapidly over the last few years, and in our increasingly microbe-focused society, it’s more important than ever for coatings manufacturers to ensure they are doing all they can to help tackle microbial contamination and put their customers’ minds at rest.

As well as providing assurance, controlling the growth of harmful microbes also has a significant effect on product lifetime and sustainability. How often is something thrown away because it no longer works or looks as it did originally? Frequently, belongings degrade not because of normal wear and tear, but because of microbes. Bacteria and fungi generate unsavory odors and unsightly stains, and may even break down the surface of an item if not kept in check. For products frequently exposed to moist and humid surroundings, the problem of irreversible damage can be much worse. Deterioration caused by microorganisms, therefore, discourages item reuse and leads to higher volumes of waste going to landfill, which has negative repercussions on the environment.


The Uphill Battle Against Surface Bacteria

Unfortunately, even regular surface cleaning with standard disinfectants is not enough to eradicate the microorganisms that cause premature degradation in the long term, as microbes can proliferate exponentially within a matter of minutes on an unprotected surface. What’s more, harsh cleaning chemicals can accelerate the disintegration of coatings even further. This makes built-in anti-microbial chemistries ideal, as incorporating these technologies into the very makeup of the coating provides long-lasting surface protection, even between cleanings.

Despite the benefits, adding anti-microbials into water-based coatings during manufacture also has several challenges. Historically, anti-microbial additives have been hard to incorporate and can cause aggregation and sedimentation during the mixing and dispersing process. This causes clouding and discoloration, rendering these formulations unsuitable for applications requiring completely transparent coatings, and making end products less visually attractive to consumers. Additionally, existing anti-microbials for water-based coatings tend to be unstable in UV light, making them inappropriate for outdoor uses and shortening their usable lifetime. Therefore, there is clearly a great need for highly effective built-in anti-microbials for water-based coatings that are easy to incorporate and that do not produce unwanted side effects.


A Fresh Solution for Water-Based Coatings

Microban has developed a new anti-microbial innovation for water-based coatings, LapisShield™. This novel technology offers sustainable solutions for deterring microbial growth, and it has been specifically designed to meet the needs of the coatings industry. It harnesses the power of sodium pyrithione, which works by disrupting a microbial cell’s internal enzymes, blocking its metabolic pathways, and creating an inhospitable environment where it cannot proliferate (Figure 1). The additive is completely free from heavy metals, giving it a more favorable regulatory status, and providing an alternative to the anti-microbials based on heavy metals.

An illustration showing how LapisShield works to control microbial growth around the clock.
FIGURE 1 » An illustration showing how LapisShield works to control microbial growth around the clock.

The product addresses problems that manufacturers face when incorporating anti-microbials into their coatings, and has advantages over traditional technologies. In regards to anti-bacterial and anti-fungal efficacy, the product inhibits bacterial growth by up to 99.99%, preventing mold and mildew growth on treated surfaces for the lifetime of the coating. Polyurethane and acrylic coatings containing the product have been tested for both Gram-negative (E. coli) and Gram-positive (Staphylococcus spp.) bacteria, and results showed that the untreated materials were unable to exceed the desired >2 log reduction (Figure 2). LapisShield also remains constantly active in the coating, working around the clock to inhibit microbial growth even between cleans.

Comparing the anti-microbial performance of polyurethane and acrylic coatings treated with LapisShield with untreated coatings.
FIGURE 2 » Comparing the anti-microbial performance of polyurethane and acrylic coatings treated with LapisShield with untreated coatings.

When adding traditional anti-microbials to water-based coatings, there is often an unavoidable negative impact on aesthetics, as dispersions can affect clarity or induce speckling. This may drive up scrap rates and make production prohibitively costly. A product that is clear and UV stable has minimal optical impact on the appearance of end products in comparison to other anti-microbials, which typically cause yellowing or other unwanted visual defects (Figure 3). An additive that remains clear after drying and avoids speckling, due to its water solubility, makes it ideal for integration into transparent and thin water-based coatings, as well as those applied to outdoor surfaces.

LapisShield has minimal optical impact on the appearance of end products in comparison to other anti-microbials, which can cause yellowing, speckling or clouding.
FIGURE 3 » LapisShield has minimal optical impact on the appearance of end products in comparison to other anti-microbials, which can cause yellowing, speckling or clouding.

The chemistry is designed to seamlessly integrate into any water-based coating formulation, including anti-fingerprint and anti-smudge formulations, as it is easy to incorporate, mix, and disperse. Improper mixing often leads to clumping, non-uniformity, and coating defects that influence yield. Standard coating processes such as spraying, roll-to-roll, dip, and others can be used to apply the final treated coating to a range of surfaces, including wood, metal, polymers, and glass (See Images 1-4).

Treated acrylic coating on aluminum.
Treated acrylic coating on aluminum.
Untreated acrylic coating on aluminum.
Untreated acrylic coating on aluminum.
Treated PU coating on wood.
Treated PU coating on wood.
Untreated PU coating on wood.
Untreated PU coating on wood.

These capabilities go a long way towards improving the overall manufacturability of anti-microbial coatings, and minimizing their impact on product yields. Coating batches treated with LapisShield can also easily be stored for future use, and repeatedly opened without reducing coating pot life or causing permanent settling. This prevents unnecessary waste and optimizes resource use for more environmentally friendly coatings manufacturing.


A More Sustainable Future

This versatile technology is already registered with the U.S. Environmental Protection Agency and the EU Biocidal Products Regulation, making it available for coatings manufacturers operating in numerous markets across the world. LapisShield makes the large-scale, high-throughput, cost-efficient production of anti-microbial water-based coatings accessible to a wide range of sectors. It offers long-lasting and effective protection against the detrimental effects of microbes for a whole host of goods, without compromising on aesthetics, functionality, or shelf-life during storage. This chemistry holds much promise for extending the lifetime of water-based coatings and coated products, consequently promoting reusability, contributing to waste reduction, and supporting crucial sustainability goals.

KEYWORDS: antimicrobial coatings water-based paints

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

James Rapley, Product Development Engineer, Microban® International, Charlotte, NC

Recommended Content

JOIN TODAY
to unlock your recommendations.

Already have an account? Sign In

  • PCI-0724-Global10-Feature-1440.png

    2024 Global Top 10: Top Paint and Coatings Companies

    Who ranks on top? PCI’s annual ranking of the top 10...
    Paint and Coating Market Reports
    By: Courtney Bassett
  • PCI-0724-PCI25-Feature-1440.png

    2024 PCI 25: Top Paint and Coatings Companies

    PCI's annual ranking of the top 25 North American paint...
    Paint and Coating Market Reports
    By: Courtney Bassett
  • pci1022-Kinaltek-Lead-1170.jpg

    A Novel Pigment Production Technology

    Following an extensive R&D program that demonstrated...
    Paint and Coating Pigments
    By: Jawad Haidar and Nitin Soni
You must login or register in order to post a comment.

Bridget Steele
February 27, 2024
These features significantly enhance the anti-microbial coatings' manufacturability while reducing mario games their effect on product yields.

Report Abusive Comment

Manage My Account
  • eMagazine
  • eNewsletter
  • Online Registration
  • Subscription Customer Service

The Coatings Minute: Print Returns with PCI’s New Showcase Issue

The Coatings Minute: Print Returns with PCI’s New Showcase Issue

The Coatings Minute: Why Industry News Matters More Than Ever

The Coatings Minute: Why Industry News Matters More Than Ever

CTT Registration Now Open

CTT Registration Now Open

The Coatings Minute: Your Inside Look at PCInnovations

The Coatings Minute: Your Inside Look at PCInnovations

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the PCI audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of PCI or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • Modern arapartment complex painted in bright colors.
    Sponsored byEPS - Engineered Polymer Solutions

    Architectural Polymers Leading the Way in Coatings Innovation

  • paint sprayer in a workshop
    Sponsored byallnex

    Enabling Performance and Compliance: allnex Introduces a New Line of VOC Exempt Solvent-Borne Resins

Popular Stories

BASF SE Logo

BASF Reportedly Eyes Exit from Coatings

No. 7 BASF Coatings

BASF Comments on Potential Sale of Coatings Business

Modern arapartment complex painted in bright colors.

Architectural Polymers Leading the Way in Coatings Innovation



PCI Buyers Guide

Submit a Request for Proposal (RFP) to suppliers of your choice with details on what you need with a click of a button

Start your RFP

Browse our Buyers Guide for manufacturers and distributors of all types of coatings products and much more!

Find Suppliers

Events

September 3, 2025

Coatings Trends & Technologies Summit

The Coatings Trends & Technologies (CTT) Summit is an annual conference for both liquid and powder coatings formulators and manufacturers to discuss innovations in coatings technology. This event combines high-quality technical presentations, a resource-rich exhibit hall, and dedicated networking opportunities to connect scientific minds, foster innovation, and cultivate game-changing new ideas!

January 1, 2030

Webinar Sponsorship Information

For webinar sponsorship information, visit www.bnpevents.com/webinars or email webinars@bnpmedia.com.

View All Submit An Event

Poll

Longest-running laboratory experiment

What is the longest-running laboratory experiment?
View Results Poll Archive

Products

CTT Summit Short Courses (Live 9/3/25)

Coatings Trends & Technologies Summit is expanding its offerings with four short courses. These short courses will offer an extensive day of interactive learning.

See More Products
pci  webinar april 2025

PCI CASE EBOOK

Related Articles

  • Photo showing a large, one-story building with white roof.

    Constructing Cleaner Roofing with Anti-Microbial Additives

    See More
  • pci0820-NEI-1095605928-900.jpg

    From Concept to Implementation: Anti-Ice Coating Technology for the Aerospace Industry

    See More
  • Market Reports 2.jpg

    New Anti-Microbial Coatings Market Report Released

    See More

Related Products

See More Products
  • organic coatings.jpg

    Organic Coatings: Science and Technology, 4th Edition

  • Kevin-Biller-PC-BOOK.jpg

    Powder Coatings - Foundation for the Novice Formulator (ebook)

  • durability.jpg

    Increasing the Durability of Paint and Varnish Coatings in Building Products and Construction 1st Edition

See More Products

Events

View AllSubmit An Event
  • September 3, 2025

    Coatings Trends & Technologies Summit

    The Coatings Trends & Technologies (CTT) Summit is an annual conference for both liquid and powder coatings formulators and manufacturers to discuss innovations in coatings technology. This event combines high-quality technical presentations, a resource-rich exhibit hall, and dedicated networking opportunities to connect scientific minds, foster innovation, and cultivate game-changing new ideas!
View AllSubmit An Event
×

Keep the info flowing with our eNewsletters!

Get the latest industry updates tailored your way.

JOIN TODAY!
  • RESOURCES
    • Advertise
    • Contact Us
    • Directories
    • Store
    • Want More
  • SIGN UP TODAY
    • Create Account
    • eMagazine
    • eNewsletters
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey & Sample
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • Youtube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2025. All Rights Reserved BNP Media.

Design, CMS, Hosting & Web Development :: ePublishing

Painting & Coating Industry (PCI) logo Powder coating summit logo
search
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Painting & Coating Industry (PCI) logo Powder coating summit logo
  • NEWS
    • Latest News
    • Market Trends & Reports
    • Price Alerts
    • Subscribe to eNewsletters
    • Global Top 10/ PCI 25
    • Weekly Featured Article
    • COATLE Word Game
  • PRODUCTS
    • Product News
    • Must See Products and Services
  • MATERIALS
    • Additives
    • Resins/Polymers
    • Pigments
    • Equipment
    • Distributors
  • TECHNOLOGIES
    • Adhesives
    • Architectural Coatings
    • FINISHING
      • Finishing News
      • Finishing Technologies
      • Finishing Equipment
      • Finishing Today
    • Industrial Coatings
    • Nanotechnology
    • Powder Coatings
    • Solventborne
    • Special Purpose Coatings
    • Sustainability
    • UV Coatings
    • Waterborne
  • RESOURCES
    • Columns
      • Ask Joe Powder
      • Did you know?
      • Distribution Dive
      • Focus on Canada
      • Formulating With Mike
      • Innovation Insights
      • Moody's Coatings Conundrums
      • Powder Coating Perspectives
      • Target the Market
      • TiO2 Insider
    • Blogs
      • Editor's Viewpoint
      • Industry Insights
    • Coatings Supplier Handbook
    • Podcasts and Videos
      • COAT-IT! Podcast
      • Videos/PCI TV
    • PCI Store
    • Classifieds
    • eBooks
    • Sponsor Insights
    • White Papers
    • COATLE Word Game
  • EVENTS
    • Coatings Trends & Technologies Summit
    • Paint and Coatings Academy
    • Webinars
    • Calendar of Events
    • Lifetime Achievement Award
  • DIRECTORIES
    • Buyer's Guide
    • Equipment Directory
    • Materials Directory
  • EMAGAZINE
    • Current Issue
    • eMagazine Archive
    • China Issue Archive
    • Editorial Advisory Board
  • CONTACT
    • Contact Us
    • Advertise
    • Subscribe to eMagazine
    • Subscribe to eNewsletters
  • SIGN UP!