Patent ID: 6750313
Filing Date: 2004-06-15
Classification: C08G,Y10T

Abstract:
A product comprising optical material formed from a resin composition comprising:a carbonate residue; a phosphonic acid residue represented by structural formula (1) wherein R1 represents an organic group, X1 represents oxygen, sulfur or selenium; anda dihydric phenol residue represented by structural formula (2) wherein R2 is independently selected from the group consisting of a hydrogen atom, a halogen atom, a hydrocarbyl group and a nitro group, p and q are integers and p+q=0 to 8, and the hydrocarbyl group is selected from the group consisting of an aliphatic group having 1-20 carbon atoms, and an aromatic group, Y1 is selected from the group consisting of a single bond, an oxygen atom, a sulfur atom, an alkylene group, an alkylidene group, a cycloalkylene group, a cycloalkylidene group, a halo-substituted alkylene group, a halo-substituted alkylidene group, a phenylalkylidene group, a carbonyl group, a sulfone group, an aliphatic phosphine oxide group, an aromatic phosphine oxide group, an alkylsilane group, a dialkylsilane group, and a fluorene group,wherein mol fractions of the phosphonic acid residue and the carbonate residue satisfy equation (3) 1>(a)/{(a)+(b)}&gE;0.5â€ƒâ€ƒ(3), wherein (a) represents the number of moles of phosphonic acid residues, and (b) represents the number of moles of carbonate residues, andthe resin composition may contain 1) two or more different phosphonic acid residues having different R1 or X1 and 2) two or more different dihydric phenol residues having different R2 and Y1.