Novel polyisocyanate compound, method for producing the same, and uses thereof
申请人:Haseyama Ryuji
公开号:US20050049430A1
公开(公告)日:2005-03-03
The invention provides an optical material being excellent in balance between the heat resistance, Abbe number and refractive index by providing a compound represented by the general formula (1):
in the formula, k and n representing integers of 0 to 2 and 0 to 1, respectively, with the proviso that k and n are not simultaneously zero, and k=0 meaning that —(CH
2
)k- is not included in the formula.