Modified larch tannin was prepared by grafting copolymerization and sulfoalkylation, and successfully used as retanning agent, possessing good water solubility and enhanced penetration rate.
利用
聚和磺烷基化
方法对落叶松
性。
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fall in with, fall into, fall into a rut, fall into place, fall off, fall out, fall over, fall short, fall short of, fall through,
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3G, 401(K), a,
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