Study on Removal of Polymaleic Anhydride from the Graft byproduct of Maleic Anhydride with Water-Washing Method

doi:10.19491/j.issn.1001-9278.2009.04.019

China Plastics ›› 2009, Vol. 23 ›› Issue (04): 76-79 .DOI: 10.19491/j.issn.1001-9278.2009.04.019

Study on Removal of Polymaleic Anhydride from the Graft byproduct of Maleic Anhydride with Water-Washing Method

Received:2008-12-01 Revised:1900-01-01 Online:2009-04-26 Published:2009-04-26

Abstract

Abstract: In the paper the chlorinated polypropylene was grafted with maleic anhydrid. The polymaleic anhydride from the byproduct of CPP-g-MAH was removed by water-washing method instead of acetone extraction method. Washing graft product was characterized by infrared spectrum and the parameters of adhesion and solubility was also determined. The effect of temperature, time and water addition on the removal rate of water washing were investigated. Results showed that when the temperature was 90℃, time was 2h, water addtion was 325ml the removal rate of water washing was the highest. Using water washing method could not affect the adhesion of graft on polypropylene board.

Key words: chlorinated polypropylene, maleic anhydrid, graft, water washing method

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Study on Removal of Polymaleic Anhydride from the Graft byproduct of Maleic Anhydride with Water-Washing Method

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