Bakelite

Lore & Background

The reaction between phenol and aldehyde was first reported in 1872 by Adolf von Baeyer, though its use as a commercial product was not considered at the time. Leo Baekeland was already wealthy due to his invention of Velox photographic paper when he began to investigate the reactions of phenol and formaldehyde in his home laboratory. His initial intent was to find a replacement for shellac, a material in limited supply because it was made naturally from the secretion of lac insects. He produced a soluble phenol-formaldehyde shellac called Novolak, but it was not a market success.

Baekeland then began experimenting on strengthening wood by impregnating it with a synthetic resin rather than coating it. By controlling the pressure and temperature applied to phenol and formaldehyde, he produced a hard moldable material that he named Bakelite, after himself and the heat curing process it required. He filed a patent for his 'method of making insoluble products of phenol and formaldehyde' on July 13, 1907, and it was granted on December 7, 1909. He announced his invention at a meeting of the American Chemical Society on February 5, 1909.

Baekeland started semi-commercial production in his home laboratory, marketing it as a material for electrical insulators. In the summer of 1909, he licensed the continental European rights to Rütger AG, forming Bakelite AG, the first to produce Bakelite on an industrial scale. By 1910, he formed the General Bakelite Company of Perth Amboy, New Jersey. The Bakelite Corporation was formed in 1922 after patent litigation favorable to Baekeland, from a merger of three companies. Bakelite was aggressively marketed as 'the material of a thousand uses.'

Reader's Guide

Bakelite's significance lies in being the first synthetic plastic, a breakthrough that transformed the chemical industry and paved the way for all subsequent plastics. Its ability to be molded into any shape, combined with heat resistance and electrical nonconductivity, made it commercially successful for diverse products including kitchenware, jewelry, pipe stems, children's toys, firearms, electrical insulators, and casings for radios and telephones. The creation of a synthetic plastic was revolutionary for an industry then focused on cloth dyes and explosives. Bakelite's commercial success directly led to the development of other synthetic plastics. As the world's first commercial synthetic plastic, it was named a National Historic Chemical Landmark by the American Chemical Society. Its retro appeal has made old Bakelite products collectible. The material is formally polyoxybenzylmethyleneglycolanhydride, a thermosetting phenol formaldehyde resin. Baekeland's innovative step was to heat the condensation product under pressure in an egg-shaped 'Bakelizer' at about 150 °C, suppressing foaming and producing an extremely hard, infusible, and insoluble substance.

Did You Know?

• Bakelite was developed by chemist Leo Baekeland in Yonkers, New York, in 1907.
• It was the first plastic made from synthetic components.
• Bakelite is heat-resistant and electrically nonconductive.
• The retro appeal of old Bakelite products has made them collectible.

From Shellac to Synthetic Resin

Leo Baekeland, already wealthy from his invention of Velox photographic paper, began investigating phenol and formaldehyde reactions in his home laboratory in Yonkers, New York. His initial goal was to find a synthetic substitute for shellac, a natural resin harvested from lac insect secretions that was in limited supply. His first product, a soluble compound called Novolak, never achieved commercial success, though it persists to this day as a photoresist. Baekeland then pivoted to impregnating wood with synthetic resin rather than coating it. By controlling pressure and temperature applied to phenol and formaldehyde, he produced a hard, moldable material he named Bakelite—after himself and the heat-curing process it required. This was the first synthetic thermosetting plastic ever made. He filed his patent on July 13, 1907; it was granted December 7, 1909. He announced the invention at an American Chemical Society meeting on February 5, 1909, and secured patent protection in Belgium, Canada, Denmark, Hungary, Japan, Mexico, Russia, and Spain. He envisioned 'the thousand and one articles' it could produce, testing fillers from cotton and powdered bronze to slate dust, finding his best results with wood and asbestos fibers.

Building a Global Industry

Baekeland began semi-commercial production in his home laboratory, marketing the material specifically for electrical insulators. By the summer of 1909, he had licensed continental European rights to Rütger AG, whose subsidiary Bakelite AG became the first to manufacture the resin on an industrial scale. The following year, American output was sufficient to justify expansion, and Baekeland established the General Bakelite Company in Perth Amboy, New Jersey, to handle U.S. manufacturing and marketing. In 1922, after patent litigation went in his favor, the Bakelite Corporation was formed through a merger of three companies: Baekeland's General Bakelite, the Condensite Company founded by J. W. Aylesworth, and the Redmanol Chemical Products Company founded by Lawrence V. Redman. Under advertising director Allan Brown, who joined from Condensite, the corporation aggressively marketed Bakelite as 'the material of a thousand uses.' A trademark featuring the letter B above an infinity symbol was filed on August 25, 1925, with claimed use dating to December 1, 1924. The first issue of Plastics magazine in October 1925 placed Bakelite on its cover. In 1926, Bakelite Limited was formed in Britain through a merger of three phenol-formaldehyde suppliers, and a new factory opened in Tyseley.

A Material in Many Forms

Bakelite's commercial appeal stemmed from its ability to be molded into virtually any shape, combined with its heat resistance and electrical nonconductivity. These properties made it ideal for electrical insulators, radio casings, and telephone housings, while its workability opened doors to kitchenware, jewelry, pipe stems, children's toys, and even firearms. During the 1910s and 1920s, the company produced a transparent cast resin—sometimes called 'artificial amber'—that was machined and carved into pipe stems, cigarette holders, and decorative jewelry. However, growing demand for molded products eventually led the company to concentrate on molding rather than solid cast resins. By the mid-1920s, the material was available in black, brown, red, yellow, green, gray, blue, and blends of two or more colors. It was manufactured in numerous forms: clear material for jewelry and smokers' articles; cement for sealing electric light bulbs in metal bases; varnishes for impregnating electric coils; lacquers for protecting hardware surfaces; enamels for resistive coatings on industrial equipment; laminated sheets for silent gears and insulation; and molding compound prepared by impregnating cellulose substances with the initial uncured resin.

Legacy and the Birth of a New Industry

The creation of a fully synthetic plastic was a watershed moment for the chemical industry, which at the time was largely preoccupied with cloth dyes and explosives. Bakelite's commercial triumph demonstrated that synthetic materials could replace natural ones on a massive scale, and its success directly catalyzed the development of subsequent synthetic plastics. In recognition of its significance, the American Chemical Society designated Bakelite a National Historic Chemical Landmark. The United States Tariff Commission, in a 1925 report, hailed the commercial manufacture of synthetic phenolic resin as 'distinctly an American achievement,' though it declined to publish specific production figures to avoid disclosing individual company data. The phenol-aldehyde reaction itself had been first reported by Adolf von Baeyer as early as 1872, but no one had envisioned its commercial potential until Baekeland's work. Today, the retro aesthetic of vintage Bakelite objects—radios, telephone handsets, jewelry, and small household items—has made them prized collectibles, ensuring that a material born in a home laboratory in 1907 continues to capture public imagination more than a century later.

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