发明授权
US5124054A Method of improving the thermal stability of quaternary ammonium hydroxides (PNE-539) 失效
提高季铵氢氧化物的热稳定性的方法(PNE-539)

Method of improving the thermal stability of quaternary ammonium
hydroxides (PNE-539)
摘要:
The presence of a minor amount of an anti-oxidant, a metal detergent, a dispersant or mixtures thereof in a hydrocarbon liquid containing certain quaternary ammonium hydroxides has been found to be effective in improving the thermal stability of the hydroxides.
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