西南石油大学学报(自然科学版) ›› 2006, Vol. 28 ›› Issue (2): 71-74.DOI: 10.3863/j.issn.1000-2634.2006.02.019

• 油气化学工程与化工 • Previous Articles     Next Articles

RELATION BETWEEN STRUCTURE OF ETHENE.VINYLACETATE COPOLYMERS AND THEIR POUR POINT DEPRESSION

JIANG Qing-zhe1 YUE Guo2 SONG Zhao-zheng 1.

  

  1. (University of Petroleum，Beijing 102249，China)
  • Received:2005-02-28 Revised:1900-01-01 Online:2006-04-20 Published:2006-04-20
  • Contact: JIANG Qing-zhe

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Abstract: All kinds of molecule structures of the ethylene-vinyl ace-fate copolymers(EVA) have been synthesized by solution poly-merization. Their crystallinity, solubility and the effect of lower-ing pour point of crude have been studied. Results show that on-1y carbon atoms far from polar group of EVA take part in crystal-
lizing. When carbon number of alkyl chain of EVA, which takes part in crystallizing, is about equal to tbree fourths of average carbon number of wax, the effect of EVA pour point depressants is best. When the average relative molecular mass of EVA is 1 .2 x 10"，the effect of EVA is best. The distribution of relative molecular mass has little influence.

Key words: ethylene- vinyl acetate copolymer, distribution of relative molecular mass, pour point depression effect

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