Accession Number : AD0675617

Title :   HOW DOES FREEZE/THAW AFFECT SOLVENT-BASED PAINTS.

Descriptive Note : Research paper,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF BUILDING RESEARCH

Personal Author(s) : O'Doherty,G. A. ; Ashton,H. E.

Report Date : MAY 1967

Pagination or Media Count : 4

Abstract : Continuous exposure to low temperatures is not deleterious to solvent-based coatings as evidenced by consistency measurements, which mainly reflect the condition of the vehicle. The general appearance also indicated satisfactory stability. This is to be expected since the rates of chemical reactions decrease as temperatures are lowered. As with water-based coatings, alternate freezing and thawing is more damaging, particularly to materials that are somewhat unstable. From comparisons made between consistency changes occurring during normal storage and accelerated tests, the 48-hour cycle is the best short-term test for predicting low temperature stability. The 6-hour cycle is too severe and continuous low temperature is not drastic enough for this purpose. (Author)

Descriptors :   (*PAINTS, FREEZING), ORGANIC SOLVENTS, MELTING, DEGRADATION, STORAGE, TEST METHODS, CANADA

Subject Categories : Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE