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Rohm & Haas manufactured clear plexiglass bubble tops
for 1946-1948 Fords, (Buicks and others?) Another Detroit firm named
Wright-Austin also made bubble tops in the early 1950s. The Add-a-top
corporation sold combination fiberglass plexiglass hardtop roofs for 1949-51
Ford convertibles that were manufactured for them by Cadillac Plastics of
Troy Michigan. - Rohm & Haas – Philadelphia PA – 1909-present Originally a
German Firm started in 1901, they established a US branch in 1909. Rohm &
Haas developed, patented and manufactured Plexiglas and built a few show
cars for GM (Chevrolet) that featured Plexiglas such as the Corvair-based
1963 Explorer I and the Corvette-based 1964 Explorer II. The Explorer I was
definitely built, however evidence that the Explorer II ever went beyond the
drawing board is lacking. Earlier on they had built the famous 1939 World’s
Fair Plexiglas Pontiac “Ghost Car”. Rohm & Haas started life as a chemical
firm that manufactured a leather abatement treatment called Bate that was
used extensively by the leather industry in the 1930s on the hides they sold
to auto manufacturers and coachbuilders. Today they’re one of the world’s
largest manufacturers of specialty chemicals and continue to supply paint,
powder coatings and adhesives to the auto industry although they sold their
Plexiglas business in the 1990s.
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