The methods for preparing structural material bonding agent by condensing the alkaline lignin in the wast liquor of soda pulping process with formaldehyde and phenol are described.
本文叙述了利用碱法制浆废液中的碱木素同苯酚、甲醛缩合制取结构材料粘合剂的方法。
2
The formaldehyde in fur was extracted by artificial perspiration solution and the formaldehyde content in the extracted liquor was determined by acetylacetone spectrophotometric method.