| 摘要 |
PROBLEM TO BE SOLVED: To obtain a plastisol composition useful for obtaining a molded product having excellent recovery from deformation; and to provide an acrylic polymer fine particle for constituting the plastisol composition. SOLUTION: The acrylic polymer fine particle has at least one tanδpeak in each range of≤-10°C and≥60°C in a chart of temperature dependency of a dynamic viscoelasticity when a sheet-shaped testing piece is prepared and the viscoelasticity thereof is measured by the following measuring method: the measuring method comprising adding 100 pts. mass of diisononyl phthalate to 100 pts. mass of the acrylic polymer fine particles, homogeneously mixing and dispersing the diisononyl phthalate, casting the resultant mixture so as to have 2 mm thickness, heating the cast product at 150°C for 20 min to provide the sheet-shaped testing piece, and measuring the dynamic viscoelasticity of the testing piece at 1 Hz frequency within the range of -50 to 150°C. The plastisol composition contains the polymer fine particles. The article is obtained from the plastisol composition. COPYRIGHT: (C)2005,JPO&NCIPI
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