| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a back sheet for solar cell having a weather-resistant coating layer which exhibits excellent adhesion and designability even if exposed to a heat and humidity environment or ultraviolet ray. <P>SOLUTION: The back sheet for solar cell has a polymer base material, and a polymer layer provided on the polymer base material and containing a composite polymer which contains 15-85 mass% of siloxane structural unit represented by a general formula (1) and 85-15 mass% of non-siloxane-based structural unit in a molecule, a structure part derived from a crosslinking agent for crosslinking the composite polymer, and a pigment having a bulk density of 0.50-0.85 g/cm<SP POS="POST">3</SP>, and a ratio to total mass of the polymer layer in the range of 45-85 mass%. In the formula, R<SP POS="POST">1</SP>and R<SP POS="POST">2</SP>represent, independently, a hydrogen atom, a halogen atom, or a monovalent organic group, n represents an integer of 1 or more. A plurality of R<SP POS="POST">1</SP>and R<SP POS="POST">2</SP>may be identical or different. <P>COPYRIGHT: (C)2013,JPO&INPIT |
