Process for preparing polycarbonate terpolymer foam suitable for

Details Process for preparing polycarbonate terpolymer foam suitable for Process for preparing polycarbonate terpolymer foam suitable for

1987-12-14

1988-08-16

Lin, Kuang Y.

Metal founding

Process

Shaping a forming surface

164 34, B22C 702

Patent

active

047637153

ABSTRACT:
The evaporative casting of molten metals has been shown to produce castings having smooth surfaces without any sign of carbon deposits thereon by using a terpolymer polycarbonate prepared from cyclopentene oxide or cyclohexene oxide, ethylene oxide, propylene oxide, or butylene oxide, and carbon dioxide in making patterns for the lost foam casting process.

REFERENCES:
patent: 4416926 (1983-11-01), Maglio

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