Impact-resistant poly(meth)acrylate moulding masses with...

C - Chemistry – Metallurgy – 08 – L

Patent

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C08L 33/04 (2006.01)

Patent

CA 2595593

The invention relates to a polymer mixture, made from the (meth)acrylate (co)polymer components a.), b.), c.) and/or d.) from claim 1), whereby a sample body produced from the polymer mixture has the following properties: a tensile modulus (ISO 527) of at least 2,500 MPa, a Vicat softening point VET (ISO 306-B50) of at least 110 ~C, an impact strength (ISO 179-2D, flatwise) of at least 30 KJ/m2 and a melt-flow index MVR (ISO 1133, 230 ~C / 3.8 kg) of at least 1.0 cm3/10 min. The invention further relates to injection moulded moulding bodies and the use of the polymer mixture for the production of injection moulded pieces.

L'invention concerne un mélange de polymères à base des constituants (co)polymères (méth)acryliques a.), b.), c.) et/ou d.) de la revendication 1. Selon l'invention, un échantillon d'essai produit à partir de ce mélange de polymères présente simultanément les propriétés suivantes : un module d'élasticité en traction (ISO 527) d'au moins 2.500 MPa, une température de ramollissement Vicat VET (ISO 306-B50) d'au moins 110 °C, une résistance aux chocs (ISO 179-2D, perpendiculaire à la stratification) d'au moins 30 kJ/m2, ainsi qu'un indice de fusion MVR (ISO 1133, 230 °C / 3,8 kg) d'au moins 1,0 cm3/10 min. L'invention concerne également des corps moulés par injection et l'utilisation du mélange de polymères selon l'invention pour produire des pièces moulées par injection.

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