Hydrolyzable‐emulsifier‐containing polymer latices as dispersants and binders for waterborne carbon black paint

Abstract

Poly(styrene-co-butyl methacrylate) and poly(styrene-co-butyl acrylate) latices were prepared by emulsion polymerization with alkali-hydrolyzable and nonhydrolyzable cationic emulsifiers and were used as a dispersant and binder for waterborne carbon black (CB) paint. CB was dispersed in the latex solutions and then coated on filter paper pretreated with dilute aqueous Na 2 CO 3 under mild conditions. The styrene (St)-rich rigid copolymer latices easily dispersed the CB but fixed a little amount of the pigment on the paper surface. In contrast, the methacrylate-and acrylate-rich soft latices tended to increase the adhesibility on it. We also demonstrated that the hydrolyzable-emulsifier-containing latices always had a higher adhesibility than the nonhydrolyzable-emulsifiercontaining ones. Thus, the hydrolyzable-emulsifier-containing latices with an appropriate St content had the highest paintability, rapid adhesion, quick drying, reduced fading, superior fastness, and so on.

Controlling self-assembling co-polymer coatings of hydrophilic polysaccharide substrates via co-polymer block length ratio

“…The hydrophilic block chemical equivalent, starch, is an abundant yet cheap natural polysaccharide commonly used in industrial processes and as substrate [67]. The hydrophobic polymer composition is a simple, yet extremely common random co-polymer that is used in e.g., paint binders [68][69][70], adhesive coatings [71][72][73][74], and paper industries [75,76]. Co-polymers of butyl acrylate and styrene are also common in composite latexes and have been used as oil adsorbent membranes [77].…”