Polycarbodiimide compositions for optical use

摘要

The invention provides a resin composition for optical use which comprises: (a) at least one member selected from the group consisting of: a polycarbodiimide represented by general formula (2):
wherein R represents a diisocyanate residue, R 1 represents a monoisocyanate residue, and n is an integer of 2 to 15; and a carbodiimide represented by general formula (3):
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ R 1 €•N=C=N€•R 1 €ƒ€ƒ€ƒ€ƒ€ƒ (3)
wherein R 1 represents a monoisocyanate residue; and (b) a polycarbodiimide represented by general formula (1):
wherein R represents a diisocyanate residue, R 1 represents a monoisocyanate residue, and n is an integer of 20 to 200. Also disclosed are a resin sheet for obtained from the resin composition and an optical semiconductor device using the resin composition or the resin sheet.