合成了2种助焊活性剂23-二溴丁二酸和环烷基胺氢溴酸盐，制备了ES系列活性助焊剂。
Two active agents for soldering, 23 Dibromosuccinic acid and cycloalkanamine hydrobromide were synthesized. A series of ES active soldering fluxes were prepared.
合成了2种助焊活性剂23-二溴丁二酸和环烷基胺氢溴酸盐，制备了ES系列活性助焊剂。
Two active agents for soldering, 23 Dibromosuccinic acid and cycloalkanamine hydrobromide were synthesized. A series of ES active soldering fluxes were prepared.
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