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Significance and Use
3.1 Coatings intended to be cured by ultraviolet radiation, especially those involving free radical chemistry, tend to polymerize during storage. It is of interest to determine how well a formulation resists this effect. Many factors influence the storage stability of a composition. The procedures described here are intended to improve the precision of determining this property. Because the effects of resins, monomers, photoinitiators, synergists, stabilizers, or pigments can alter the relation between elevated and room temperature stabilities, any correlation of performance at two different temperatures is possible only with a given formulation and, therefore, is useful only for quality control.
1.1 This method covers procedures for testing the package stability of coatings intended to be cured by ultraviolet radiation. One procedure is given for clear coatings and another for opaque fillers.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ICS Number Code 87.040 (Paints and varnishes)
UNSPSC Code 46181533(Protective coats)
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ASTM D4144-94(2014), Standard Test Method for Estimating Package Stability of Coatings for Ultraviolet Curing, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top