Title: Process for manufacture of polyester powder
Application Number: 85105052 Application Date: 1985.07.04
Publication Number: 1007414 Publication Date: 1987.01.21
Approval Pub. Date: Granted Pub. Date: 1988.03.09
International Classifi-cation: C08J3/12,C08J3/14,C09J3/14
Applicant(s) Name: Hebei Polytechnical College Address:
Inventor(s) Name: He Yashan, Li Chunzhen, Si Kejie, Wang Renheng, Zh
Attorney & Agent: LI GUORU
Abstract:
     ABSTRACT :The present invention resides in that polyester is first dissolved in a liquid mixture of a polyester-dissolving solvent and a polyester-precipitating agent under heating and stirring, and then the solution is cooled, and during the cooling, liquid mixture of the above same components but with less solvent is added to ppt. polyester in form of powder. Because the liquid mixture can be recycled for use without further seperation, the process has following advantages, energy consumption is small, cost is low and operation is simple. It is a economic simple process for manufacture of polyester powder.
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