Bakelite plastic

Bakelite is a hard, heat-resistant plastic made from phenol and formaldehyde, and it was the first fully synthetic plastic. The Belgian-born chemist Leo Baekeland developed it in 1907, and it went on to appear in telephones, radios, car parts and many other everyday goods.

History of Bakelite

Leo Hendrik Baekeland was born in 1863 and earned a doctorate at the University of Ghent. In 1889 he traveled to New York on a fellowship and stayed in the United States. A few years later he invented Velox, a photographic paper that could be developed in gaslight rather than sunlight, and in 1899 he and his partners sold their company, Nepera, to the Eastman Kodak Company for a reputed $750,000.

Now wealthy, Baekeland set up a laboratory at home and turned to synthetic resins. Asked why, he said he had chosen the field deliberately because it offered a way to make money. His first goal was a substitute for shellac, which at the time was made from the shells of Asian lac beetles.

He worked systematically, varying the temperature, the pressure and the proportions of phenol and formaldehyde. His first product was a soluble phenol-formaldehyde shellac called Novolak, which never succeeded commercially. He then looked for a binder to replace the hard natural rubber used with asbestos, and by controlling pressure and temperature on an intermediate substance he produced a polymer that, when mixed with fillers, formed a hard moldable plastic.

Baekeland filed his patent in July 1907, and the United States granted it on December 7, 1909, under the title “Method of making insoluble products of phenol and formaldehyde.” The Science Museum in London describes the product as hard, compact, insoluble and infusible. Baekeland retired in 1939 and sold his company to the Union Carbide and Carbon Corporation, and he died in 1944.

Who invented Bakelite?

Baekeland is the accepted inventor, and the material carries his name. His success rested on earlier work, however. By the 1900s, chemists had realized that many natural resins and fibers were polymers, and they had tried to reproduce them in the laboratory without success. Baekeland studied that earlier work before running his own carefully controlled experiments.

Credit is also shared for the material’s later appearance. The bright, dyed phenol-formaldehyde plastics prized by collectors rested on processes developed by German chemists and introduced to the United States in 1927 by the American Catalin Corporation. The Bakelite Corporation followed with colorful products of its own.

How Bakelite is made

Bakelite forms when phenol and formaldehyde react under controlled heat and pressure. The reaction first yields a resin, which is mixed with fillers such as wood and asbestos and then pressed directly into the shape needed. Once the plastic has set, it keeps its form, because it is infusible and does not melt again when heated.

Chemically, Bakelite is a polymer, a material built from long molecular chains. The Science Museum gives its original chemical name as polyoxybenzylmethylenglycolanhydride, and the shorter trade name came from the inventor.

Types and variants of Bakelite

Several forms of phenol-formaldehyde plastic came from this early research. Novolak, the first product, was soluble and was meant as a shellac substitute. Molding compounds made with fillers were pressed into finished goods, such as the cases of telephones and radios.

Brightly colored versions, such as those sold by the American Catalin Corporation, appeared in the late 1920s and were based on German processes. The Bakelite Corporation then made vivid products of its own.

Impact of Bakelite

The Science Museum notes that Bakelite changed the world in the first half of the twentieth century. It was advertised as “the material of 1000 uses,” and it was the first synthetic plastic, which meant people were no longer dependent on the products of nature. It found early use in the rapidly growing automobile and radio industries, although it was relatively expensive.

Surviving objects show how widely it spread. The Science Museum Group collection includes a Type 232 telephone from about 1934, a Philco radio from about 1936, a 1940 Murphy radio, and a cigarette box made in the 1930s to imitate expensive wooden boxes. Jewelry and billiard balls were also made from it, and its smooth molded surfaces became closely tied to the look of early industrial design.

By the time of Baekeland’s death in 1944, world production of Bakelite was estimated at about 175,000 tons, and it was used in over 15,000 different products.

Advantages and disadvantages of Bakelite

Bakelite’s main strengths were the ones named in its patent. It was hard, compact and insoluble, and because it could be pressed into a mold with fillers, makers could turn out complex shapes in volume. It gave manufacturers a dependable material at a time when natural resins and fibers had to be collected, and their supply could not be controlled.

It also had limits. It was relatively expensive in its early years, according to the Science History Institute. Because it is infusible, a finished Bakelite part cannot be softened and reshaped by heating, which sets it apart from thermoplastics. Baekeland’s first resin, Novolak, never became a market success.

Bakelite today

Bakelite goods are now mostly seen as vintage objects. The Science History Institute notes that telephones, radios and jewelry from the first half of the twentieth century are prized by antique dealers and collectors, and museums keep them as evidence of the early plastics age.

The larger legacy is a world full of synthetic plastics, from medical implants to space shuttles, as the Science Museum puts it. The museum adds that society is now grappling with how to cope with all that plastic, and it suggests that the history of its development and use may help.

Editorially reviewed by Specialty Digest Editorial TeamLast reviewed November 4, 2026Researched and drafted with AI assistanceReport an issue