| 摘要 |
PROBLEM TO BE SOLVED: To provide an acrylic transparent self-adhesive composition having excellent external shock-absorbing properties. SOLUTION: In mixing an acrylic monomer with 4-200 pts.wt., based on 100 pts.wt. of the monomer, of an organized layered clay mineral and polymerizing the monomer, an external action is exerted after mixing to intercalate a part of the monomer between the layers of the organized layered clay mineral and then the monomer is caused to polymerize in such an intercalated state thereby to give a transparent self-adhesive composition excellent in external shock-absorbing properties which comprises a polymer of the monomer and the clay mineral dispersed therein, a part of the polymer being intercalated between layers of the clay mineral to cause interlayer separation, and has a ratio [G1/G2], of the dynamic storage elastic modulus [G1] at a strain amount of 0.1% to the dynamic storage elastic modulus [G2] at a strain amount of 10%, of at least 2 in the measurement of the dynamic elastic modulus when shear strain is imposed at a frequency of 10 Hz. COPYRIGHT: (C)2003,JPO
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