Лако-красочные материалы — производство

Other additives that may be found in starch-based adhesives include preservatives to retard microbial growth, bleaches to remove colored impurities and prevent discoloration of the glue over time, defoamers to prevent foaming during processing, and organic solvents to enhance bonding to waxed surfaces. The most commonly used preservative is formaldehyde, and common bleaches include sodium bisulfite, hydrogen and sodium peroxide, and sodium perborate. Defoaming agents and solvents to be used in starch adhesives must be matched to the type and use of the adhesive, with special attention to compatibility and toxicity of the components.