초록 ▼

Photocell modules wherein one or more photocells are encapsulated within a thermoplastic polymeric pottant between the layers of a rigid or flexible laminate. The pottant is a graft copolymer of (a) at least one addition polymerizable backbone monomer having a glass transition temperature (Tg) of le

Photocell modules wherein one or more photocells are encapsulated within a thermoplastic polymeric pottant between the layers of a rigid or flexible laminate. The pottant is a graft copolymer of (a) at least one addition polymerizable backbone monomer having a glass transition temperature (Tg) of less than 0°, (b) at least one addition polymerizable backbone monomer having a Tg of 50°-150°C., and (c) a poly (vinyl aromatic) addition polymerizable macromonomer of 3,000-50,000 molecular weight having a Tg of at least 30°C. The pottant is highly light-transmissive, electrically insulating and provides excellent protection for the photocells and circuitry at low cost.

대표청구항 ▼

A photocell assembly comprising first and second sheets in spaced apart, laminar arrangement, said first sheet being transparent and light transmissive, said sheets defining a cavity therebetween, said cavity containing one or more photocells encapsulated within a thermoplastic polymeric pottant com

A photocell assembly comprising first and second sheets in spaced apart, laminar arrangement, said first sheet being transparent and light transmissive, said sheets defining a cavity therebetween, said cavity containing one or more photocells encapsulated within a thermoplastic polymeric pottant comprising a graft copolymer of (a) 50-90 wt. %, based on graft copolymer, of at least one addition polymerizable backbone monomer having a Tg of less than 0°C., (b) 0-10 wt. %, based on graft copolymer, of at least one addition polymerizable backbone monomer having a Tg of 50°-150°C., and (c) 10-50 wt. %, based on graft copolymer, of a macromonomer comprising poly (vinyl aromatic) of number average molecular weight of 3,000-50,000 and having an addition polymerizable end group, said macromonomer having a Tg of at least 30°C.