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In the early 1970s, National Foam, Inc. invented alcohol-resistant AFFF technology. AR-AFFF is a synthetic foam developed for both hydrocarbon and polar-solvent materials. Polar solvents are combustible liquids that destroy conventional fire-fighting foam.
1963 The United States Navy scientists began to work with 3M to develop aqueous film-forming foams (AFFF). The US military began to use AFFF since its development in 1963 and patented AFFF in 1967. [22] [23] 1961 A DuPont in-house toxicologist said C8 was toxic and should be "handled with extreme care." [10]
AFFF was developed in the 1960s under Project Light Water in a joint venture between 3M and the U.S. Navy. AFFF forms a film that floats out before the foam blanket, sealing the surface and smothering the fire by excluding oxygen. AFFF is widely used for ARFF firefighting at airports, often in conjunction with purple-K dry chemical.
The following articles cover the timeline of United States inventions: . Timeline of United States inventions (before 1890), before the turn of the century Timeline of United States inventions (1890–1945), before World War II
This category is about inventions that were patented, though not necessarily invented, in the United States. Subcategories. This category has the following 18 ...
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The unit is then filled with 1.5 US gallons (5.7 L) of water and class A foam, AFFF, FFFP or commercial detergent is added to the water in a 1% ratio for class A fires and a 3%-6% ratio for class B fires. Typically, the tip of the smooth-bore application nozzle is then cut off to allow the foam to properly expand.
1999: America Online has over 18 million subscribers and is now the biggest internet provider in the country, with higher-than-expected earnings. It acquires MapQuest for $1.1 billion in December.