Patent ID: 7371795

Claim:
A polymer composition consisting essentially of: a mixture of the following components: a) a low-molecular-weight (meth)acrylate (co)polymer composed of 50 to 90% by weight of methyl methacrylate, from 10 to 20% by weight of styrene, and from 5 to 15% by weight of maleic anhydride having a solution viscosity in chloroform at 25° C. (ISO 1628—Part 6) of 45 to 55 ml/g, b) an impact modifier based on crosslinked poly(meth)acrylates, c) a relatively high-molecular-weight (meth)acrylate (co)polymer composed of 50 to 90% by weight of methyl methacrylate, from 10 to 20% by weight of styrene, and from 5 to 15% by weight of maleic anhydride having a solution viscosity in chloroform at 25° C. (ISO 1628—Part 6) greater than or equal to 65 ml/g, and/or d) a (meth)acrylate (co)polymer other than a) having a solution viscosity in chloroform at 25° C. (ISO 1628—Part 6) of 50 to 55 ml/g, where each of the individual components a), b), c) and/or d) may be individual polymers or a mixture of polymers, where the entirety of a), b), c) and/or d) is 100% by weight of the polymer mixture; and where a test specimen produced from the polymer mixture simultaneously has the following properties: I. a tensile modulus (ISO 527) of at least 2600 MPa, II. a Vicat softening point VSP (ISO 306 B50) of at least 109° C., III. an impact strength (ISO 179 2D, flatwise) of at least 17 kJ/m 2 , and IV. a melt index MVR (ISO 1133, 230° C./3.8 kg) of at least 1.5 cm 3 /10 min.