Everything Goodyear does in vulcanization is to improve the properties of natural polymers. The next logical step is to use natural polymer cellulose and new materials based on it.

The inventors are particularly interested in synthesizing substitutes for natural materials that are expensive and in short supply in developing countries, because it means profitable market development. Ivory is a particularly attractive comprehensive replacement target.

Alexander Parks, an Englishman, named this kind of "synthetic ivory" pyroxlin. He promoted it under the brand name of "parkesine" and won the bronze medal at the 1862 London World Expo. Parkesine was treated with cellulose, nitric acid and solvent. The output process of hardening becomes an effort, and ivory-like materials can be shaped fiercely.

However, Parks can't extend the process to industrial level and products, which are quickly twisted and cracked from parkesine and used in a short time. American printer and amateur inventor named john wesley Hyatt, Parks never gave up. Parks was not worried about the lack of proper solvents, but Hyatt found that camphor would do well.

Hyatt is an industrial genius who understands what it means to make such a formable or "plastic" substance, and then designs many basic industrial machines that need to produce high-quality plastic raw materials. Because cellulose is the main component used to synthesize his new material, Hyatt named it "celluloid". According to reports, in 1863.

The first product is dental parts. Nested dentures around celluloid have been proved to be better than existing rubber dentures. However, celluloid dentures are easy to soften when heated, drinking tea is very troublesome, and the smell of camphor is often difficult to suppress.

The real breakthrough products of celluloid are waterproof tops, collars, cuffs and fake shirts, which are called "Dickies" on all fronts. Its fragile nature later became a joke in the stock market and a joke in silent movies and comedies. They don't get sick and die easily. Hyatt sells their trains. Corsets and celluloid corsets are also very popular, because sweat will not rust, because if they are made of metal, they will rust.