| 摘要 |
PROBLEM TO BE SOLVED: To obtain an aliphatic-aromatic copolymerized petroleum resin composition with good storage stability, particularly forming no gel-like matter during storage and slight in the change in resin physical properties with time, and to provide a method for producing the composition. SOLUTION: The aliphatic-aromatic copolymerized petroleum resin composition is obtained by the following process: Using as feedstock oil a mixture of a fraction 20-110°C in boiling point and a fraction 140-280°C in boiling point in petroleum pyrolysis, an aliphatic-aromatic copolymerized petroleum resin≤11% in the olefinic double bond hydrogen area ratio of its proton NMR spectrum is obtained and then compounded with a hindered amine compound in a compounding vessel with a specific oxygen concentration. COPYRIGHT: (C)2006,JPO&NCIPI
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