C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 9/06 (2006.01) C04B 26/06 (2006.01) C08F 2/44 (2006.01) C08F 292/00 (2006.01) C08L 33/06 (2006.01)
Patent
CA 2175805
A highly filled, curable composition comprising (A) an addition polymerisable organic liquid which on curing forms a solid polymer, (B) 20 to 80 % by volume of a finely divided particulate inorganic filler having a weight average particle size of less than 50 microns but not having a BET surface area of more than 30 m2.cm-3, and (C) 0.05 to 0.5 % by weight of a polydimethylsiloxane and moulded composite articles produced therefrom. Such articles showing improved resilience to thermal shock.
L'invention concerne une composition durcissable, à forte quantité de charge. Cette composition comprend (A) un liquide additif organique polymérisable qui, lors de son durcissement, forme un polymère solide, (B) 20 à 80 % en volume d'une charge inorganique particulaire finement divisée dont la granulométrie moyenne pondérée est inférieure à 50 microns mais dont l'aire de surface BET ne dépasse pas 30 m?2¿.cm?-3¿, et (C) 0,05 à 0,5 % en poids d'un polydiméthylsiloxane, ainsi que des articles composites moulés produits à partir de cette composition. De tels articles présentent une meilleure élasticité lors des chocs thermiques.
Imperial Chemical Industries Plc
Marks & Clerk
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