Another example of
CHEMICAL PROGRESS
;
G E N E R A L E LEG T R I C
OWEMICAL
RESEARCH
Develops L E X A N plastic tough enough t o be hammered through a plank G e n e r a l E l e c t r i c h a s d e v e l o p e d a n e w plastic t o u g h enough to replace cast metals in many applications. Called LEXAN® polycarbonate resin, the new thermoplastic has such high impact strength that parts molded of it can withstand hammer blows without breaking. LEXAN resin has a hard, smooth surface and can b e m a d e in transparent a n d opaque colors. I t resists heat a n d mechanical stress well, and has excellent electrical properties. In preliminary tests, LEXAN resin has shown promise in such applications as coil forms, structural a n d insulating parts, gears and appliance components. I n many cases, one p a r t molded of t h e n e w plastic is able to replace an assembly of several parts m a d e from conventional materials.
L E X A N resin joins a growing list of G.E. chemical discoveries ... a list that includes many of the new silicones, electrical insulating materials, and phenolic molding a n d coating resins. LEXAN resin is not yet available for field evaluation; the limited quantities now being produced are being used in a controlled testing program. For preliminary information on LEXAN resin, write Dept. C D D , CHEMICAL and METALLURGICAL DIVISION, General Electric Company, Pittsfield, Mass.
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GENERAL!!! ELECTRIC SEPT.
16,
1957
C&EN
51
