Process for granulating returned cellulose propionate

Application Number: 00105047
Application Date: 2000.04.10
Publication Number: 1266769
Publication Date: 2000.09.20
Priority Information:
International: B29B9/00
Applicant(s) Name: Zheng Zhenlong
Inventor(s) Name: Zheng Zhenlong
Patent Agency Code: 33102
Patent Agent: zhang gang
Abstract A process for granulating the returned cellulose propionate uses the returned material of cellulose propionate as main raw material and includes such steps as immersing in liquid, removing impurities, baking twice and granulating. Its advantages are simple process, high recovery and purity and low cost. It can be used to make mirror frame with high quality and low cost.