Newsletter - June
CHROMA-CHEM® 641 - Pigment Dispersions for Solvent-Based Coatings
The various pigments utilized in this colorant line are dispersed in an aldehyde resin vehicle. This vehicle provides excellent wetting and dispersing properties. The colorants are formulated with Propylene Glycol Monomethyl Ether (PM) Acetate and Rule 66 Mineral Spirits as the primary solvents. Each colorant contains a carefully selected and unique blend of vehicle and pigment to provide compatibility in a wide range of nonaqueous coatings applications. The individual CHROMA-CHEM® 641 colorant formulations are designed for use in dispenser tinting or as an in-plant system for tinting or full pigmentation. This line of colorants provides exceptional value when cost is balanced with performance. These colorants provide a good option when the cost of an acrylic-based colorant system exceeds the performance requirements of a medium-duty industrial coating.
The CHROMA-CHEM® 641 line is designed to color most industrial coatings systems. They are formulated with optimal levels of pigment, resin, additives and solvent to ensure each colorant has excellent pigment development and exhibits rheological characteristics that contribute to extraordinary stability of the colorant whether in-can or in-canister. The CHROMA-CHEM® 641 Colorants are controlled to a tinting strength tolerance of ±2% by volume and ΔE. Rheological properties of the colorants are also controlled to allow for excellent performance in volumetric or gravimetric tinting equipment. The tight control allows for accurate reproduction of color through in-plant or dispenser tinting.
These colorants have been evaluated in a multiple maintenance and industrial coating types at 2 to 15 percent loading. Testing indicates excellent compatibility in multiple coating types. Base formulations will have a impact on individual results. Thorough testing is recommended. Results are consistent with our other industrial colorant systems and good results are expected in a wide variety of coatings applications based on acrylic, polyester, cellulosic lacquer, vinyl lacquer, chlorinated rubber, alkyd, epoxy, polyurethane coatings. This line is also compatible with most aliphatic and aromatic hydrocarbons, esters, ethers, ketones, and reactive diluents.
The CHROMA-CHEM® 641 colorants are formulated for use in most non-aqueous industrial coatings including, but not limited to, aerosols, concrete stains, general industrial finishes, general OEM, industrial maintenance, light industrial, and other protective coatings.
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