| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a composite film having enough breaking strength, good stress relaxation, and excellent processability. <P>SOLUTION: The composite film is obtained by irradiating radiation to cure to a mixture whose principal ingredients are urethane polymer and a radically polymerizable monomer, and has 100%mod of 5 N/mm<SP POS="POST">2</SP>or more, an elongation at break of 150% or more, and a stress relaxation time of 200 seconds or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
