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#76
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It seems it didn't have anything to do with patent expiration. Just another urban legend?? Dupont were by no means the only producer of R12 and not the inventor. Most patents ran out in 50s. Freon became a generic name, but much of the R12 used in cars was likely made by others, such as Allied Chemicals. The process to restrict CFCs started in early 70s in USA and accelerated after '85 due to discovery of ozone holes by the British. Dupont at one stage did their own investigation and confirmed that CFCs did in fact affect the ozone layer. DuPont did conduct a PR campaign to defend CFCs against environmental groups who wished to curtail their use. At first because the scientific data was meagre, but later they claimed that time was needed to develop alternatives (which was true). Once the replacement products had been tested and proven acceptable, Dupont then changed their tune and became pro-active in supporting the phase-out of CFCs. They no doubt did see a competitive advantage in that they now had replacement products and competitors would have to scramble to catch up. Or that's the way I recall it (I was involved in a small way)
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Graham 85 300D,72 350SL, 98 E320, Outback 2.5 |
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 190D 2.5Turbo 1987 190D 2.5-5SPEED!!! 1987 300TD 1987 300TD 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere! |
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The world has changed since R12 was first banned and now these replacement refrigerants are now getting the attention of the environmentalists. Just have to look at what has happened to the new diesels to see how the world has changed since the 80s. Not everything that is being done for the environment seems to make sense and it can be frustrating when in affects us directly. But overall I am happy we are doing something. Here is a link from Australia that covers some aspects of the changes from a guy that works in the field.
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Graham 85 300D,72 350SL, 98 E320, Outback 2.5 Last edited by Graham; 03-31-2016 at 08:31 PM. |
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bad link
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2004 F150 4.6L -My Daily 2007 Volvo XC70 -Wife's Daily 1998 Ford F150 -Rear ended 1989 J-spec 420SEL -passed onto its new keeper 1982 BMW 733i -fixed and traded for the 420SEL 2003 Volvo V70 5 Speed -scrapped 1997 E290 Turbo Diesel Wagon -traded for above 1992 BMW 525i -traded in 1990 Silver 300TE -hated the M103 1985 Grey 380SE Diesel Conversion, 2.47 rear end, ABS -Sold, really should have kept this one 1979 Silver 300D "The Silver Slug" -Sold |
#80
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Graham 85 300D,72 350SL, 98 E320, Outback 2.5 |
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