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Thread-locking fluid was developed by American professor Vernon K. Krieble in 1953. His company, American Sealants, founded the Loctite brand. [1] An early version of the compound was patented in 1960. [2]
Loctite is an American [1] brand of adhesives, sealants, surface treatments, and other industrial chemicals that include acrylic, anaerobic, cyanoacrylate, epoxy, hot melt, silicone, urethane, and UV/light curing technologies. Loctite products are sold globally and are used in a variety of industrial and hobbyist applications.
Cyanoacrylate adhesives generally have a short shelf life—about one year from manufacture if unopened, and one month once opened, but this can be extended by refrigeration. Polymerization of methyl 2-cyanoacrylate
Accelerated life testing is the process of testing a product by subjecting it to conditions (stress, strain, temperatures, voltage, vibration rate, pressure etc.) in excess of its normal service parameters in an effort to uncover faults and potential modes of failure in a short amount of time.
Sulfur chloride pentafluoride (SF 5 Cl), a useful source of the SF 5 group, is prepared from SF 4. [13] SF 4 + Cl 2 + CsF → SF 5 Cl + CsCl. Hydrolysis of SF 4 gives sulfur dioxide: [14] SF 4 + 2 H 2 O → SO 2 + 4 HF. This reaction proceeds via the intermediacy of thionyl fluoride, which usually does not interfere with the use of SF 4 as a ...
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Sheets of PMMA are commonly used in the sign industry to make flat cut out letters in thicknesses typically varying from 3 to 25 millimeters (0.1 to 1.0 in). These letters may be used alone to represent a company's name and/or logo, or they may be a component of illuminated channel letters.
Starting in the late 1990s, BMW for example came out with a spec called LL-98 (Long Life 1998) which requires special additives in oils that were approved to meet that spec. BMW regularly develops new specs to meet the increasing demands of the EPA emission standards and MPG requirements as well as new engines.