Acrylic composite materials

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

400/5041, 400/70

C08L 57/00 (2006.01) C08F 2/44 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2012949

A fluid, filled, curable composition comprising an organic liquid which is polymerisable to form a solid polymer without the formation of any elimination products and from 20 to 70% by volume of alumina trihydrate filler characterised in that filler has a median particle size of between 5 and 30 microns, and preferably between 6 and 20 microns, and has an average aspect ratio of less than 2.5:1, preferably less than 2.0:1, and desirably less than 1.8:1. The composition when cured provides shaped articles having improved mechanical properties and when used as a dispersion of low viscosity reduces the tendency for the composition to show colour variations through the thickness of the sheet as exhibited using alumina trihydrate fillers of high aspect ratio.

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