When the reaction was tried at 80[degrees]C and atmospheric pressure, methyl ethyl ketone
started evaporating and there was no product formation.
The commercial standard mixture did not contain the methyl ethyl ketone
, which was calibrated separately using an individual standard after dilution.
The rubber was first dissolved in methyl ethyl ketone
(20 wt% solution).
The best growth opportunities exist with specialty solvents, environmentally friendly "green solvents," and conventional solvents that have recently been exempted from EPA regulations, such as methyl ethyl ketone
, ethylene glycol butyl ether, and t-butyl acetate.
The methyl ethyl ketone
(MEK) double rubs reported are the number of rubs required to break through the films to the substrate below.
It stands up equally as well in alkaline solutions and in solvents, such as methyl ethyl ketone
, N-methyl pyrrolidone, toluene and others.
The principal HAPs targeted in the regulation include: toluene, methyl ethyl ketone
, methanol, xylenes, methyl isobutyl ketone, methylene chloride, trichloroethylene, n-hexane, glycol ethers and formaldehyde.
The passage of the Clean Air Act Amendments of 1990 prompted an increased urgency to find new ways of treating airstreams containing volatile organic compounds (VOCs) such as toluene and methyl ethyl ketone
Reductions in the use of benzene, toluene, xylenes, methyl ethyl ketone
, methyl isobutyl ketone, chloroform and methylene chloride, which are deemed among the worst sources of dangerous air pollution, are also underway.
Three chemicals -- methylene chloride, methyl ethyl ketone
and toluene -- were completely eliminated from Andersen Corp.'s work place.
* dilution - unstable methyl ethyl ketone
peroxide (MEKP) is widely employed as a hardener in fibreglass resins when diluted in a compatible solvent.
Other chemical outlets for butenes are methyl ethyl ketone
, octenes and methyl methacrylate.