Coalescent formulation studies: Efficiency and partition rates was written by Arendt, William D.;Strepka, Arron M.;Gruszecki, Kristy. And the article was included in Proceedings of the International Waterborne, High-Solids, and Powder Coatings Symposium in 2001.Product Details of 5444-75-7 The following contents are mentioned in the article:
2-Ethylhexyl benzoate (2EHB) was recently introduced to the coatings industry as a low odor, low volatility coalescent. The original architectural paint data indicated that 2EHB is an effective coalescent for latex paint, and some of the data indicated that 2EHB is more efficient than the 2,2,4-tri-Me, 1-3-pentanediol monoisobutyrate (TMB). This initial efficiency data suggested the need to better define the apparent efficiency of 2EHB, factors affecting efficiency and its measurement. It was decided to measure efficiency performance in paint as opposed to measurements in neat emulsion coalescent blends. The primary yardstick tests chosen were low temperature coalescence (by porosity determinations and visual assessment), scrub resistance (room temperature and low temperature dry), and low temperature touch up. The efficiency data developed confirms that overall 2EHB is about 25% more efficient than TMB. However, differences in formulations sometimes hide these efficiencies. For example, it was difficult measure efficiency in high PVC flats. Also, in some high Tg polymers, the partition rate of 2EHB was slower than TMB. This fact can mask efficiency. The chem. nature of 2EHB is different from the TMB and this difference, in a few instances, may require different formulation or processing strategies. Understanding of performance differences is necessary to fully exploit 2EHB’s potential as an efficient latex paint coalescent. Guidelines on maximizing the efficiency of 2EHB as a coalescent will be presented. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Product Details of 5444-75-7).
2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Polyesters are important plastics, with monomers linked by ester moieties. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Product Details of 5444-75-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics