C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 33/04 (2006.01)
Patent
CA 2603957
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 40k Daltons and 1000k Daltons and the LMWA has a weight average molecular weight (Mw) of between the entanglement molecular weight (Me) (expressed in k Daltons) and 250k Daltons. A method of producing an acrylic polymeric composition and the use of an acrylic polymeric composition are described together with thick section moulded products .
L'invention concerne une composition polymérique acrylique comprenant un mélange fondu d'un matériau acrylique thermoplastique de poids moléculaire élevé (HMWA) et d'un matériau acrylique thermoplastique de faible poids moléculaire (LMWA). Au moins 70 % en poids du HMWA et du LMWA est composé d'un (co)polymèr alkyl (alk)acrylate. L'HMWA a une masse moléculaire moyenne pondérée (Mw) comprise entre 40 k Daltons et 1000 k Daltons et le LMWA a une masse moléculaire moyenne pondérée (Mw) comprise entre la masse moléculaire d'enchevêtrement (Me) (exprimée en k Daltons) et 250 k Daltons. L'invention concerne également un procédé de fabrication d'une composition polymérique acrylique, l'utilisation d'une composition polymérique acrylique, ainsi que des produits moulés à section épaisse.
Fraser Ian
Robinson Ian
Gowan Intellectual Property
Lucite International Uk Limited
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