| 1 | Therefore, determination the content of maleic anhydride in different conditions is researched. | |
| 2 | Duplication of bands in this region is also shown by trifluoropropyne and perfluoro2-butene. | |
| 3 | The certified reference material mainly consists of polyisobutylene and hexadecane with good homogeneity and stability. | |
| 4 | The way that determination the content of maleic anhydride has been reported is not accurate. | |
| 5 | Reaction temperature should be increased as high as possible under the condition of assuring the color of polyisobutylene succinic anhydride. |
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