Krieble, Vernon

Vernon Krieble, then a professor at Trinity College in Hartford, Connecticut. Their first use was as threadlocking sealants, to lock nuts on threaded fasteners as a replacement for metal lock washers, and to lock threaded fasteners in tapped holes in metal parts. They were the first products termed sealants to have a viscosity lower than that of water. Today, such anaerobic adhesives and sealants are used in almost all mechanical equipment that is subject to vibration. 

Vernon Krieble, chairman of the Chemistry Department at Trinity College in Hartford, Connecticut, learned about the product through his son, Robert Krieble, who was employed at General Electric. Vernon Krieble found a chemical solution to the problem by using cumene hydroperoxide (I) (see Section XII for all structures) as the initiator and packaging in half-filled oxygen-permeable polyethylene bottles [8]. He licensed the GE patent and in 1954 founded the American Sealants Corporation, which later became Loctite Corporation [9]. At the present time anaerobic adhesives and sealants are manufactured or sold on every continent by more than a dozen companies. Applications in virtually every industry, and technological iimovation, as measured by patent activity, continue unabated. 

Av. Prof. Vernon Krieble, 91 06690-111 Itapevi, S o Paulo Brasil... 

Anaerobic adhesives are derived from methacrylates, a monomer related to acrylic, or more commonly known as Plexiglas. The word anaerobic really applies to microbes that become active or live in the absence of oxygen. Although anaerobic sealants do not contain microbes, they become active and cure or polymerize in the absence of oxygen. These adhesives were developed by Professor Vernon Krieble, the founder of American Sealants Company, now known as Loctite Corporation. 

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