The Plastics Academy an-nounced five posthumous induc-tees to the Plastics Hall of Fame. Officers of the Washington-based Plastics Academy made presentations to surviving family members at a ceremony Oct. 2 during the Regional Technical Conference in St. Louis, sponsored by the Society of Plastics Engineers.
Posthumous inductees are:
Jonas W. Aylsworth (1868-1916), developed rubber-toughened phenolic following Leo Baekeland's first patent for phenolics in the early 1900s. Aylsworth is credited with creating the first interpenetrating polymer network.
From 1914, when he patented the simultaneous vulcanization of rubber and condensation of phenol and formaldehyde, until 1929, Edison Records made its phonograph record from it. Aylsworth founded Condensite Co. of America to make the material, using his own technology and that licensed from Baekeland. Condensite was consolidated with others in 1922 to form Bakelite Corp.
Condensite pioneered the sale of phenolic compounds instead of resins and developed the two-step, hot-discharge materials which accelerated the use of phenolics, according to the book Plastics History - U.S.A. by J. Harry DuBois.
Aylsworth continued to do projects for Edison, serving at one time as chief chemist at the Edison Phonograph Works. He and his wife, Adelaide, lived in East Orange, N.J., about a mile from the Edison laboratory.
Erik E. Erikson (1924-93), an automotive plastics pioneer, founded Detroit Plastic Products in 1949.
The company pioneered the conversion to plastics of metal components such as pillar garnish moldings and louvers for heaters and air conditioners.
Detroit Plastic Products also was a custom injection molder of toys and housewares, a model car molder, and a blow molder of bottles.
Erikson is credited with tooling and processing techniques, done before the advent of computer controls, that made possible great precision in complex and multicavity molds.
William E. Hanford (1908-96), a polymer chemist and co-inventor of polyurethanes, died this past Jan. 27. He had received more than 120 patents.
In 1942, Hanford and the late Donald Holmes received a patent, assigned to DuPont Co., that is regarded as the first public disclosure of PU chemistry. Hanford left DuPont in 1942, eventually becoming vice president and director of re-search at Olin Corp. He retired in 1973.
Hanford also did important research in nylon, polyester, fluoropolymers and other chem-istries. His work at DuPont helped lead to the commercialization of Teflon, a fluoropolymer.
Edwin H. Land (1909-91), founder of Polaroid Corp., was one of the most celebrated inventors of this century.
In the 1920s, he developed polarizing sheet, before introducing it in 1932. The sheet was a transparent plastic oriented so that only light waves that vibrate in a particular direction could pass through. The sheet was cheaper and easier to work with than previous refractive or reflective polarizing devices.
Land founded Polaroid Corp. in Cambridge, Mass., in 1937.
Between 1947 and 1980, Land received 15 honorary doctorate degrees. He also had received 43 honorary awards, including the Presidential Medal of Freedom.
Mario Maccaferri (1900-93) was trained in his native Italy as a classical guitarist. In the United States, he won fame for bringing music to children by founding Mastro Industries Inc., which made inexpensive plastic instruments such as guitars, saxophones and other instruments.
Mastro also was a custom molder. The company employed 300 people running 28 injection molding machines. Mastro also became the largest molder of wall tile.
Arthur Godfrey played a Mastro ukulele on his television show.
Maccaferri's career was more than toy instruments, however. In 1988, he produced what is believed to be the first full-scale, professional-quality plastic violin. It was used in a Carnegie Hall recital in 1990.