Title: Method for preparing ultra-high mol.wt. polyperfluoro-ethyl-propyl resins
Application Number: 85100491 Application Date: 1985.04.01
Publication Number: 1002131 Publication Date: 1986.08.06
Approval Pub. Date: Granted Pub. Date: 1987.07.01
International Classifi-cation: C08F2/12,C08F214/28
Applicant(s) Name: Shanghai Inst. of Organic Chemistry, Chinese Acade Address:
Inventor(s) Name: Duan Youlu, Huang Tingchun
Attorney & Agent: WU ZHENZHONG SHI JIARONG
Abstract:
     This invention refers to a method of producing title resins, which have characteristics with meltviscosity higher than 1.0X10 to the power 6 poise and mol. wt. higher than 2.0X10 to the power 5, 12-30 wt.% of perfluoro-propglene and being apt to thermoprocessing. Liquified hexafluoropropylene is used as solvent in the solution-pptn. polymerization. The dosage of monomers feeded per unit volume of reactor is 0.2-0.5g/ml. Content of tetrafluoroethylene in monomers is 11-50 wt.%, and the initiator, diisopropyl percarbonate is 0.001-0.05 wt.% of monomers.
Time: 3
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