| 摘要 |
A process for forming an acrylic sheet material comprises preparing a mixture comprising: (I) 20-89% wt of an acrylic polymer which is a copolymer containing 50-99% wt of methyl methacrylate unites and 1-50 wt % of a copolymerizable alkyl acrylate; (ii) 10-80 wt % of a mineral filler composition selected from the group comprising alumina trihydrate, magnesium hydroxide, talc and barium sulphate; and (iii) 1-40 wt % of decorative particles; and melt-moulding the mixture at a temperature above 150° C. to form a solid article. The process enables thermoformable acrylic articles which have the natural appearance of granite to be produced.
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