C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
18/666
C08J 9/14 (2006.01) C08J 9/00 (2006.01)
Patent
CA 1168409
ABSTRACT Ethylenic polymer/styrenic polymer blend foams are prepared from blends of (1) an ethylenic polymer resin having a density of from 0.915 to 0.930 g/cm3 and a melt index of from 0.2 to 2.6 grams/10 minutes and (2) a styrenic polymer resin having a melt flow rate of from 1.4 to 18 grams/10 minutes. Foams having an excellent overall combination of properties are obtained (1) when the density, D, of such foams is in. the range of from 10 to 40 kg/m3 and the 25 percent compressive strength, F, in kg/cm2 is from 0.013D1.15 to 0.024D1.15 and (2) when the ratio, R, of the melt flow rate of the styrenic polymer employed divided by the melt index of the ethylenic polymer employed is from 7 to 90 and the content, Y, of the styrenic polymer in said blend, in parts by weight based upon 100 parts by weight of the ethylenic polymer resin, satisfies the following requirement: 10 ? Y ? 394.7 + 1.18R - 294.1 log (D). C-29,956
393058
Hoki Tsuneo
Miura Nobuo
Smart & Biggar
The Dow Chemical Company
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