C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
403/57, 18/643,
C08K 7/00 (2006.01) C08J 9/00 (2006.01) C08J 9/30 (2006.01)
Patent
CA 1152700
ABSTRACT OF THE DISCLOSURE: The present invention is directed to a process for making foams which are suitable for transforming into reinforced solid cellular materials having a density low? than 0.7 kg/l. This process comprises the following steps: - mixing together in a vessel unsaturated polyester resin and a reinforcing material, the latter being selected from the group consisting of synthetic fibers, vegetable fibers and mineral fibers having a maximum length of 5 mm, whereby a liquid mixture is obtained wherein the percentage of the reinforcing material is comprised between 10 and 30% with respect to the unsaturated polyester resin; - transferring the liquid mixture of reinforcing material and unsaturated polyester resin to a turbine having a peripheral speed of 200 to 500 metres/minute; and thereafter - introducing a gas in the form of small bubbles homogeneously and the gas in the form of small bubbles homogeneously and uniformly throughout the mixture, thereby producing a reinforced foamed unsaturated polyester resin.
351184
Cipriani Aldo
Mazzola Massimo
Robic Robic & Associes/associates
Snia Viscosa Societa Nazionale Industria Applicazioni Viscosa S.
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