Process for preparing hydroxypropylmethyl cellulose by one-step method

Application Number  00129441 Application Date  2000.12.22
Publication Number  1359956 Publication Date  2002.07.24
Priority Information    
Applicant(s) Name  Heda Co., Ltd, Shandong  
Inventor(s) Name  Bi Xinde;Li Yucheng;Qiu Jianjun  
Patent Agency Code  37212 Patent Agent  gong tonghai
AbstractA one-step process for preparing hydroxypropylmethyl cellulose includes such steps as feeding refined cotton, caustic alkali, chloromethane and epoxy propane into high-pressure reactor, heating, pressurizing, dalkalizing-methylating-hydroxypropylating reaction, and post processing. Its advantages are short reaction times, high and stable product quality and high productivity.