A new method of dyeing articles moulded from synthetic resins allows manufacturers to apply colours as desired to their prodliet without requiriug| them to hoJd large stocks of vari-. ous colours. In the past the manufacturer of coloured articles from synthetic resins has been compelled to introduce the colour into the moulding com.pound before finishing. The new process, -developed by G. J. Esselen, Boston (U.S.A.), chemical consultant, iuvolves softeuing of the surface o( the moulded article in a solution contaiuing glycerine aud a phenol. Tliis soltening process allows dye actually to enter a moulded article and give it a depth of colour. An advantage of the process, wliich may be applied to plastics containing a variety of synthetic resins, is that it allows manufacturers to stock uncorourcd moulded pieces atid to dye Ihetn in colours demanded by changing, fashions.
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Hawke's Bay Herald-Tribune, Issue 164, 29 July 1937, Page 6
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139Untitled Hawke's Bay Herald-Tribune, Issue 164, 29 July 1937, Page 6
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