C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 319/14 (2006.01) C07C 319/24 (2006.01) C07C 323/51 (2006.01) C08G 75/08 (2006.01) G02B 1/04 (2006.01) C07C 321/06 (2006.01)
Patent
CA 2359876
The invention provides an optical product made of a polymer, which is obtained by using at least an asymmetric disulfide compound as an essential monomer component and which has a high refractive index and a high Abbe's number and superior heat resistance, superior weather resistance and superior transparency. The invention also provides asymmetric disulfide compounds ob- tained through reaction of (A) an O-alkyl-S-substituted sulf- enylthiocarbonate with (B) a thiol; and a method for producing asymmetric disulfides, which comprises reacting an alkoxycar- bonylsulfenyl halide with a thiol, followed by reacting the resulting O-alkyl-S-substituted sulfenylthiocarbonate with a thiol that differs from the thiol used in the previous reac- tion. These asymmetric disulfide compounds are capable of forming optical materials that have a high refractive index and a high Abbe's number and have superior heat resistance, superior weather resistance and superior transparency.
Jiang Jian
Ohkubo Tsuyoshi
Hoya Corporation
Marks & Clerk
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