Silly Putty Putty went worldwide, becoming a hit in the Soviet Union and Europe. In 1968, it was taken into lunar orbit by the Apollo 8 astronauts. Peter Hodgson died in 1976. A year later, Binney & Smith, the makers of Crayola products, acquired the rights to Silly Putty. , annual Silly Putty sales exceeded six million eggs. Silly Putty was inducted into the National Toy Hall of Fame on May 28, 2001. In addition to its success as a toy, other uses for the putty have been found. In the home, it can be used to remove substances such as dirt,
Silly Putty are used to market similar substances from other manufacturers. As a bouncing putty, Silly Putty is noted for its unusual characteristics: it bounces but breaks when given a sharp blow; it can also float in a liquid and will form a puddle given enough time. Silly Putty and most other retail putty products have viscoelastic agents added to reduce the flow and enable the putty to hold its shape. The original coral-colored Silly Putty is composed of 65% dimethylsiloxane (hydroxy-terminated polymers with boric acid), 17% silica (crystalline quartz), 9% Thixatrol ST (castor oil derivative), 4% polydimethylsiloxane, 1% decamethyl cyclopentasiloxane, 1%