Acrylic Blends

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), at least 70% w/w, based on the total weight of the HMWA, of the said HMWA comprising an alkyl(alk)acrylate (co)polymer, the said (co)polymer comprising at least 80% w/w of a first polymer unit derived from C1-C12 alkyl (C1-C8 alk)acrylate monomer units and optionally, up to 20% w/w, based on the said alkyl(alk)acrylate (co)polymer of a first copolymer unit derived from C1-C12 alkyl (C0-C8 alk) acrylate and/or (C0-C8 alk) acrylic acid monomer units, the said HMWA having a weight average molecular weight of between 40 k Daltons and 1000 k Daltons, at least 70% w/w, based on the total weight of the LMWA, of the said LMWA comprising an alkyl(alk)acrylate (co)polymer, the said (co)polymer comprising at least 80% w/w of a second polymer unit derived from C1-C12 alkyl (C1-C8 alk)acrylate monomer units and optionally, up to 20% w/w, based on the said alkyl(alk)acrylate (co)polymer of a second copolymer unit derived from C1-C12 alkyl (C0-C8 alk)acrylate and/or (C0-C8 alk)acrylic acid monomer units, the said LMWA having a weight average molecular weight of between the entanglement molecular weight (Me) (expressed in k Daltons) and 250 k Daltons, with the proviso that the HMWA has a higher Mw than the LMWA, wherein the first polymer unit of the HMWA and the second polymer unit of the LMWA are the same, and wherein the composition has less than 0.5% w/w of impact strength modifier.