Home Page   
EDinformatics Home
Home Page
Today is
Great Inventions --Great Inventors


Green Play-Doh with can and accessory toy
Green Play-Doh with can and accessory toy

Play-Doh is a commercial plastic modeling compound similar in texture to bread dough that has been sold as a children's toy around the world for a half century. Its exact makeup is a secret, but is primarily a mixture of wheat flour, water, deodorized kerosene or another petroleum distillate (which provides the smooth texture), salt, a drying agent such as borax (which deters mold), an alum-based hardening agent, and colorings and perfume.

It is non-toxic, non-staining, and is soluble in soapy water. When kept in a sealed container, Play-Doh remains pliable, but when exposed to air it hardens in about a day, making it good for children's craft projects.

Play-Doh was invented by Noah McVicker and Joseph McVicker in 1956 and awarded U.S. Patent 3,167,440 in 1965. One of many common products invented by accident; it was meant as a wallpaper cleaner. It was marketed by toy manufacturer Rainbow Crafts and first sold at the Woodward & Lothrop department store in Washington, DC.

Play-Doh comes in different colors and has a distinctive smell. Over 700 million pounds have been sold so far. The product is now owned by American toy giant Hasbro.

External links



Who were the Greatest Thinkers?


See Edinformatics List of

Great Thinkers --Great Minds











Questions or Comments?
Copyright 1999 EdInformatics.com
All Rights Reserved.