The invention relates to a method for preparing pesticide imidacloprid, wherein, in mixing condition, at 45-60Deg. C, and in proton inertia solvent, with alkali hydroxide, the 2- chlorine-5-picoline is reacted with 2-nitro nitrosamino imidazolidinyl at 1:1-1:1.2 mol ratios.
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HPMC is prepared when a purified form of cellulose is reacted with sodium hydroxide solution to produce a swollen alkali cellulose that is chemically more reactive than untreated cellulose.
当被净化的纤维素与氢氧化纳溶液反应产生一种膨胀碱性纤维素时，HPMC就产生了，这种纤维素在化学上比没有经过处理的纤维素更易起反应。
Water, acrylonitrile and the galactomannan gum are added to a reactor with an alkali metal hydroxide.
水、丙烯晴和半乳甘露聚糖胶，同碱金属氢氧化物在一起，加入到反应器中。
Viscose manufacturing process involves the reaction of cellulose with sodium hydroxide to form an alkali cellulose.
粘胶的生产过程包括纤维素与氢氧化钠反应形成碱纤维素的过程。
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