A process for producing aminoalkyl-containing guar derivative is disclosed. The process entails a) dispersing a member selected from the group consisting of guar and guar derivative in a mixture of a water-miscible aprotic solvent and water and b) alkalyizing the member with a base to obtain a mixture containing an alkalized member and c) etherifying the mixture with an amino-containing reagent to obtained an etherified mixture and d) optionally neutralizing the etherified mixture to obtain a material system containing a reaction product and e) optionally filtering the material system to obtain the reaction product and f) optionally washing the reaction product and g) optionally drying the reaction product referred to in f) and h) optionally grinding the reaction product. The product thus obtained is suitable for producing hair conditioners and flocculation aids.本發明係揭示一種製造含胺基烷基之瓜爾(guar)衍生物之方法。該方法必須a)將一選自瓜爾及瓜爾衍生物組成之群之成員分散於水可互溶非質子溶劑與水之混合物中,b)以一鹼鹼化該成員以獲得一含已鹼化成員之混合物,c)以含胺基試劑醚化該混合物以獲得一醚化混合物,d)視情況中和該醚化混合物以獲得一含反應產物之材料系統,e)視情況過濾該材料系統以獲得該反應產物,f)視清況清洗該反應產物,g)視情況乾燥f)所指之反應產物並h)視情況磨碎該反應產物。因此所獲得之產物係適合用於製造護髮素及助絮凝劑。