| 摘要 |
PROBLEM TO BE SOLVED: To provide a wax crystal modifier free from chlorine and useful for all kinds (light-based and heavy-based) of wax-containing hydrocarbon oils in the solvent dewaxing process. SOLUTION: This wax crystal modifier comprises a copolymer of an alkyl acrylate with an alkyl methacrylate and besides, a polymethacrylate of specified compositional ranges. COPYRIGHT: (C)2004,JPO&NCIPI
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