Patent ID: 7067590

Claim:
An ABC triblock polymer compound represented by the following general formula: —[CH 2 —CH(O—CH 2 —CH 2 —OCH 3 )] x -b-{[CH 2 —CH(O—CH 2 —CH 2 —OC 2 H 5 )] p -r-[CH 2 —CH(O—CH 2 —CH 2 —OCH 3 )] q } y -b-[CH 2 —CH(O—CH 2 —CH 2 —OC 2 H 5 )] z — where x+y+z is 20 or more, but 40,000 or less, p and q are independently 0.01 or more, but 0.99 or less, p+q is 1, b represents a block structure, and r represents a random structure.