Molded foams and process for producing the same

Details Molded foams and process for producing the same Molded foams and process for producing the same

1975-01-20

1976-06-08

Tillman, Murray

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106122, 260 25H, 260 25F, 260874, 260 25E, 260 25N, 260 25P, C08J 900

Patent

active

039621553

ABSTRACT:
A molded foam can be easily obtained by blending pullulan, modified pullulan or a mixture thereof with a foaming agent capable of yielding a gas at below the decomposition temperature thereof, and, if necessary, with a plasticizer or softener, and then molding the resulting mixture according to a conventional thermoplastic resin-molding process at a temperature at which the said pullulan, modified pullulan or mixture thereof is in a plastified state, and at a temperature above the gas-yielding temperature of said foaming agent and below the decomposition temperature of said pullulan, modified pullulan or mixture thereof. The molded foam thus obtained is not only well comparable in mechanical, chemical and physical properties to molded foams composed of conventional thermoplastic synthetic resins, but also has such excellent characteristics that it can spontaneously be decomposed on standing outdoors, and hence can be easily discarded without any such fear as to cause environmental pollution.

REFERENCES:
chem. Abs., 8th col.; 7th col.
Plastic Foams, Frisch et al.
Plastic Foams, I & II, Benning.

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