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Primary Examiner: Woo, Jay H.
Assistant Examiner:
Attorney: Teoli; William A., Cohen; Joseph T., Watts; Charles T.

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Title: Method for making thermoplastic foams

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.


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Inventors: Niznik, George E. (Elnora, NY, US)

Application Number: 886726
Filing Date: 1978-03-15
Publication_date: 1979-07-31
Assignee: General Electric Company (Schenectady, NY)
Primary Class(es): 264/54 264/45.3, 264/211, 264/331.11, 264/DIG5, 264/DIG83
Other Classes:
US Patent Ref:
3779954Dec, 1973Wirth et al.260/2.
3781233Dec, 1973Muller et al.260/2.

Other Refs: Other References: "Decomposition of Dihydrooxadiazinones," Rosenblum et al., J. of Am. Chem. Soc. 90 (4), pp. 1061-1062, Feb. 1968.