The synthesis of nonionic guar gum, cationic guar gum, anionic guar gum, hydroxyalkyl anionic guar gum, hydroxyalkyl cationic guar gum and amphoteric guar gum were described in detail.

• 详细介绍了非离子瓜尔胶、阳离子瓜尔胶、阴离子瓜尔胶、羟烷基阴离子瓜尔胶和羟烷基阳离子瓜尔胶以及两性瓜尔胶的合成方法。