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Nov 13, 2015, 09:51 PM
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Member Since: Oct 2008
Location: Notzville
Posts: 60,397
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Quote:
This article is about the toy manufactured by Wham-O. For other highly resilient balls, see bouncy ball.
A Super Ball (aka SuperBall) is a toy based on a type of synthetic rubber invented in 1964 by chemist Norman Stingley. It is an extremely elastic ball made of Zectron[1] which contains the synthetic polymer polybutadiene as well as hydrated silica, zinc oxide, stearic acid, and other ingredients.[2] This compound is vulcanized with sulfur at a temperature of 165 degrees Celsius and formed at a pressure of 3,500psi. The resulting Super Ball has a very high coefficient of restitution,[3][4][5] and dropped from shoulder level, a Super Ball snaps nearly all the way back; thrown down by an average adult, it can leap over a three-story building.
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https://en.wikipedia.org/wiki/Super_Ball
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