Coatings

Integral method for evaluating component contribution to total solution absorbance from chromatographic data

“…The mass, m¡, of component i flowing through the chromatographic detector cell during a period between two observations can be given by the average concentration of that component between observations, C¡, times the volume of the mobile phase passing through the cell between the observations (6), AV m¡ = C¡AV (1) The volume of mobile phase that will pass through the cell between observations is given by AV = FAt (2) where F is the flow rate and At is the time, interval between observations (6). Combining eq 1 and 2 and summing between observation times a and b, the total mass of component i in…”

“…A problem often presented to the analytical chemist involves the characterization of mixtures of solutes containing chromophores (1)(2)(3). High-pressure liquid chromatography (HP-LC) is one of the most frequently employed techniques for separating such mixtures because it is readily implemented, has a great deal of resolving power, and in one form or another, is almost universally applicable (4).…”

Emulsion copolymerization latices for interior and exterior coatings

“…The formation of latices by emulsion polymerization has been the subject of a number of research papers[1, 2, 3]. Latices in use today are derived from the free‐radical initiation addition polymerization of unsaturated monomers of vinyl or maleic type.…”