What is flubber made up in the movie?

Flubber in the movie is made of rubber and is created using a secret formula involving a mixture of chemicals and polymers. Here are some of the ingredients that are mentioned in the movie:

- Polydibutylmaleate: This is a type of synthetic rubber that is known for its elasticity and strength.

- Polyurethane: Another type of synthetic rubber that is often used in making foams and other flexible materials.

- Titanium dioxide: This is a white pigment that is used to give the Flubber its color.

- Barium sulfate: This is a mineral that is used as a filler to help thicken the Flubber mixture.

- Sodium borate: This is a chemical compound that is used as a cross-linking agent to help hold the Flubber together.

These ingredients are combined in specific proportions and then subjected to a special chemical reaction that creates the unique properties of Flubber, making it incredibly elastic, bouncy, and able to defy gravity.