B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/643
B29C 44/12 (2006.01) C08J 9/00 (2006.01) C08J 9/30 (2006.01)
Patent
CA 1159617
ABSTRACT OF THE DISCLOSURE: The present invention relates to a process for obtaining cellular materials from unsaturated polyester resins, reinforced with fillers having a density below 0.7 kg/l by injecting into a closed mould, a liquid foam of the resins having a density lower than that of the final cellular material, made by mechanical introduction of a gas, characterized by the fact that a liquid foam made from unsaturated polyester resins including conventional additives, is injected and subsequently cross-linked in a closed mould containing a reinforcing agent of synthetic, artificial, vegetable or mineral fibres in the form of a monofilament mat, a cut fibre mat, a mono or bi-directional roving woven mat, rovings, fabrics, the total amount of reinforcing material used being of from 5 to 50% by weight of the unsaturated polyester resin.
351185
Carignani Giancarlo
Cipriani Aldo
Mazzola Massimo
Robic Robic & Associes/associates
Snia Viscosa Societa Nazionale Industria Applicazioni Viscosa S.
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