Method for making thermoplastic foams

Details Method for making thermoplastic foams Method for making thermoplastic foams

1978-03-15

1979-07-31

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264211, 264331, B29H 720

Patent

active

041630378

ABSTRACT:
Foamable blends are provided of high performance thermoplastic polymers such as polycarbonates, polyesters, etc., and an effective amount of a dihydrooxadiazinone blowing agent. The blends can be melt extruded into pellets and sheet and converted into thermoplastic foam structures in accordance with conventional injection molding techniques.

REFERENCES:
patent: 3779954 (1973-12-01), Wirth et al.
patent: 3781233 (1973-12-01), Muller et al.
"Decomposition of Dihydrooxadiazinones," Rosenblum et al., J. of Am. Chem. Soc. 90 (4), pp. 1061-1062, Feb. 1968.

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