| 摘要 |
Provided is a polymer which, when used as a sealant for solar cells, has outstanding weather-resistance and workability. The main chain of the polymer contains repeating units represented by formula (1) and repeating units represented by formula (2), and the polymer satisfies requirements (a1), (a2) and (a3). (a1) : The ratio of the number of repeating units represented by formula (2) with respect to the total number of carbon atoms that constitute the aforementioned polymer main chain is from 3.8% to 7.5%. (a2): The ratio X represented by formula (3) is from 82% to 100% inclusive. X = 100 x A/B... (3) (a3): said polymer has a melting point as measured by a differential scanning calorimeter of 42°C to 90°C. |
