Lucite International UK Limited

Ian Fraser

Ian Robinson

Graeme Robertson

An acrylic polymeric composition comprising a melt blend of a thermoplastic high molecular weight acrylic material (HMWA) and a thermoplastic low molecular weight acrylic material (LMWA) is described. At least 70% w/w of the HMWA and the LMWA comprises an alkyl (alk)acrylate (co)polymer. The HMWA has a weight average molecular weight (Mw) of between 40 k Daltons and 1000 k Daltons and the LMWA has a weight average molecular weight (Mw) of between the entanglement molecular weight (Me) (expressed in k Daltons) and 250 k Daltons. A method of producing an acrylic polymeric composition and the use of an acrylic polymeric composition are described together with thick section molded products.

Acrylic Blends

An abrasion resistant acrylic composition comprises at least 70% w/w of the residues of at least one polmerisable acrylic monomer, 0.2-5% w/w of a finely divided compound comprising at least one oxide selected from silicon, titanium, zirconium and aluminum oxides, and 0.2-25% w/w of at least one linking compound which is miscible with said polymerisable acrylic monomer and which is capable of bonding to the surface of the oxide compound. The acrylic composition may be thermoformed while retaining its abrasion resistant surface properties.

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Yarm, United Kingdom

Ian Fraser