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Emulsion copolymerization latices for interior and exterior coatings

M.M.H. Ayoub (Department of Polymers and Pigments, National Research Centre, Dokki, Cairo, Egypt)

Pigment & Resin Technology

ISSN: 0369-9420

Article publication date: 1 February 1997

494

Abstract

Details the preparation of emulsion copolymerization of styrene (St)‐vinylacetate (VAc) with different molar ratio 33:67(A1), 50:50(A2) and 67:33(A3) using redox initiator system (k2S208/NaHS03) and investigates their film forming. Finds that the drying film characterization took on a brittle property which is attributed to the nature of styrene polymers. Explains that molar ratio 67:33 from butyl acrylate (BuA‐VAc) and vinyl acetate (B1, B2 and B3) in the presence of pluronic F87 was chosen as the coemulsifier as it gives good transparent and elastic film properties but has a tacky character owing to the nature of butyl acrylate polymer. Shows that styrene‐butylacrylate (St‐BuA) 67:33 molar ratio(C) has high conversion and a solid content of 51 per cent, and its film forming gives a transparent sheet that dries within 45 minutes. Notes that incorporation of these latices into interior and exterior coatings gives good characterization (hardness, ductility, adhesion and washability of 4,042 cycles) compared with the standard specifications for evaluation of latex paint.

Keywords

Citation

Ayoub, M.M.H. (1997), "Emulsion copolymerization latices for interior and exterior coatings", Pigment & Resin Technology, Vol. 26 No. 1, pp. 6-11. https://doi.org/10.1108/03699429710157214

Publisher

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MCB UP Ltd

Copyright © 1997, MCB UP Limited

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