啤酒酿造过程中经常出现一种现象，即清酒双乙酰值较低而成品啤酒中双乙酰成倍增长。
It is common that during the production of beer that diacetyl value is low in clear wine but timely increases in produced wine.
介绍了一种含环氧基聚酯的羟值测定方法，即乙酰氯法。
A method for determining hydroxyl value of epoxy-containing polyester, namely acetyl chloride method is introduced.
方法样品经溶解、降解处理后，测定1h -NMR图谱，根据氢的化学位移和响应值，计算样品的脱乙酰度。
METHODS After being dissolved and depolymerized, the sample was determined by 1h-nmr. From the chemical shifts and the intensities of resonances of protons, the degree of deacetylation was determined.
本文按下式合成了灭锈胺，其中乙酰化产率高于文献值。
This paper describes the syntheses of Eastiac by means of following formula. The yield of acylation was higher than that reported by the literature.
本文按下式合成了灭锈胺，其中乙酰化产率高于文献值。
This paper describes the syntheses of Eastiac by means of following formula. The yield of acylation was higher than that reported by the literature.
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