Ever toil with a mouldy wall that needs repainting? Biocides have been used in paints and coatings as preservatives. Biocide additives have been designed to keep bacteria from spoiling paint during storage, or to keep fungi, algae, moss or lichen from growing on and under the applied paint. Other coatings, adhesives and sealants may also contain biocides.
Insufficient preservation of paints and surface coatings can lead to contamination, microbial growth, paint deterioration and adverse effects. The addition of biocides as in-can preservatives can help to protect against these negative performance characteristics.
Biocidal systems are designed for the specific use of the paint, adhesive or coating. When applied to a surface, the biocide-paint controls the formation of biofilm on the surface;thus inhibiting initial attachment of a variety of microbial species and higher organisms.
A new market for “hygienic coatings” has evolved from higher standards of microbial control required in hospitals, food processing establishments, pharmaceutical manufacturing plants, public sports facilities, etc.
Previously a number of chemicals may have been found in performance paints and coatings
including inorganic metallic compounds such as silver, copper or zinc. Antimicrobial compounds used in traditional medical applications included antibiotics as well astriclosan and benzalkonium chloride.
Adhesive products are used to create a bond between two different or two similar materials.
Sealants are used to create an barrier to gas or moisture. Adhesives and sealants are made from precise blends of resins, synthetic rubber elastomers, and agents or additives used to enhance certain characteristics, depending on the end use. Industries that typically use adhesives and sealants include automotive, construction, consumer products, assembly, packaging and labeling.