我厂生产的落叶松栲胶含凝缩类单宁,用于鞣革,具有鞣制系数高、结合牢、耐潮热和稳定性好等优点,是重革的好鞣剂之一。但也存在着冷溶性差、渗透慢、颜色深等缺点。特别是冷溶性差、渗透慢,不能适应制革工业小液比速鞣工艺的要求。厂党委遵照毛主席关于“独立自主、自力更生”的教导,为了尽快地提高落叶松栲胶的质量,组织了有工人、干部、技术人员参加的“三结合”试验小组,在厂内进行小型试验的基础上,又认真学习武鸣、宜山等兄弟栲胶厂的先进经验,和海拉尔皮革厂一道搞了两次生产性磺化试验,并用试验 I plant the production of larch 栲 glue containing condensed tannins tannin, with tanning coefficient, with a combination of jail, hot water resistance and good stability, etc., is one of the tanning good leather. But there are also poor cold-soluble, slow penetration, color and other shortcomings. In particular, poor cold-soluble, slow penetration, can not meet the tannery industry liquid ratio tanning process requirements. In accordance with Chairman Mao’s teaching on “independence and self-reliance”, in order to improve the quality of larch gum as soon as possible, Party committee of the factory organized a “three combination” experimental group with workers, cadres and technical personnel to participate in the small-scale experiment in the factory On the basis of a careful study of Wuming, Yishan and other brothers Su Tan plastic factory’s advanced experience, and Hailar tanneries engaged in two production of sulfonated test, and with the test