Silly Putty
Toy putty (slime) / From Wikipedia, the free encyclopedia
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Silly Putty is a toy containing silicone polymers that have unusual physical properties. It can flow like a liquid, bounce, stretch, or break depending on the amount of physical stress to which it is subjected. It contains viscoelastic liquid silicones, a type of non-Newtonian fluid, which makes it act as a viscous liquid over a long time period but as an elastic solid over a short time period. It was originally created during research into potential rubber substitutes for use by the United States in World War II.[1][2][3]
The name Silly Putty is a trademark of Crayola LLC.[4] Other names are used to market similar substances from other manufacturers.