STUDY ON THE SYNTHESIS AND POUR-POINT DEPRESSING PROPERTIES OF EVA GRAFT COPOLYMER

doi:10.3863/j.issn.1674-5086.2009.06.032

西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (6): 143-147.DOI: 10.3863/j.issn.1674-5086.2009.06.032

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STUDY ON THE SYNTHESIS AND POUR-POINT DEPRESSING PROPERTIES OF EVA GRAFT COPOLYMER

GUO Shu-feng¹GUAN Zhong-yuan² HU Xing-qi³ WU Li-juan²

1.Geoscience Research Institute of Shengli Oilfield Company Limited,SINOPEC,Dongying Shandong 257015,China;2.Scientific and Technical Center of China Petroleum Pipeline Corporation,CNPC,Langfang Hebei 065000,China;3.School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China)JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SCIENCE & TECHNOLOGY EDITION)，VOL.31，NO.6,143-147,2009（ISSN 1674-5086，in Chinese

Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20

Abstract

Abstract: On the basis of analyzing characteristics of Daqing crude oil and according to mechanism of PPD,the graft copolymer of EVA and octadecyl maleimide is synthesized.The graft copolymer has an optimal effect of pour point depressing for the Daqing crude oil when it is synthesized under the conditions that the mole ratio of EVA and octadecyl maleimide is 1∶20,mass fraction peroxidation benzoin formyl is 2.5%,polymerization time is 6h,and the polymerization temperature is 90℃.When 100mg/kg of the graft copolymer was added into Daqing crude oil,the pour point was reduced by 15℃.The infrared spectrograms of octadecylamine,maleic anhydride,octadecyl maleimide indicate that the reaction product of dodecylamine and maleic anhydride is dodecylmaleimide.The NMR spectral diagrams of EVA and its graft copolymers show that the reaction of EVA and dodecylmaleimide has taken place indeed,and the grafted percentage reaches to 6.7%.

Key words: Daqing crude oil, pour point depressant(PPD), EVA, graft modification, synthesis

CLC Number:

TE869

GUO Shu-feng GUAN Zhong-yuan HU Xing-qi WU Li-juan . STUDY ON THE SYNTHESIS AND POUR-POINT DEPRESSING PROPERTIES OF EVA GRAFT COPOLYMER[J]. 西南石油大学学报(自然科学版), 2009, 31(6): 143-147.

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STUDY ON THE SYNTHESIS AND POUR-POINT DEPRESSING PROPERTIES OF EVA GRAFT COPOLYMER

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