| 摘要 |
<p>Rubber is contacted with a surfactant, coated with a polymeric composition comprising a colouring agent and then dried to form a solid coloured coating thereon. The surfactant may be applied as an aqueous solution which is subsequently allowed to at least partially dry on the surface of the rubber. The polymeric composition typically comprises an acrylic polymer or copolymer emulsion, optionally with a further modifying resin eg. a polyurethane dispersion and a pigment. The colouring method is particularly applicable for colouring comminuted scrap rubber, which may subsequently be used as synthetic mulch, as a soil amendment, or as a safety ground surface for childrens play areas and the like.</p> |
