The polymergrade tricalcium provided by the invention is mainly applied to inorganic chemical industry as dispersant.
本发明所述的聚合级磷酸三钙主要用于无机化工中的分散剂。
2
Polymergrade p-phthalic acid can be synthesized by p-xylene directly oxidation in gas-liquid-solid reaction system with stirred tank reactor.
氧化工艺采用气液固系搅拌式氧化反应器，可由对二甲苯氧化直接制备聚合级对苯二甲酸；
3
The gas flow path of SP - 3420 gas chromatograph was modified by adding a 10-way switch valve for analyzing micro-amount CO and CO2 in polymergrade propylene.