Polythiol composition and optical composition comprising same
AssigneeSK Pucore Co., Ltd.
InventorsJae Young Pai, Jeong Moo Kim, Hyuk Hee Han, Jung Hwan Myung, Kyeong Hwan You
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Abstract
A polythiol composition according to exemplary embodiments includes at least two different polythiol-based compounds, wherein a peak area (%) of the polythiol compound represented by C8H18S6, which is measured through a high performance liquid chromatographic (HPLC) analysis graph obtained at a wavelength of 230 nm, ranges from 0.90% to 1.30%. By controlling the sub-polythiol compound, an optical product having excellent transmittance and optical properties can be manufactured.
Claims12
A polythiol composition, comprising at least two different polythiol-based compounds,
- wherein a peak area (%) of a polythiol compound represented by C8H18S6, which is measured through a high performance liquid chromatographic (HPLC) analysis graph obtained at a wavelength of 230 nm, ranges from 0.90% to 1.30%.
A method for preparing a polythiol composition, the method comprising:
- introducing a metal sulfide to a preliminary polyol compound to generate a polyol intermediate;
- adding a sub-polythiol compound formation promoter to the polyol intermediate;
- and
- converting the polyol intermediate into a polythiol-based compound through thiolation, and
- wherein the polythiol composition includes at least two different polythiol-based compounds, and
- wherein a peak area (%) of a polythiol compound represented by C8H18S6 in the polythiol composition, which is measured through a high performance liquid chromatographic (HPLC) analysis graph obtained at a wavelength of 230 nm, ranges from 0.90% to 1.30%.
An optical composition, comprising:
- a polythiol composition which comprises at least two different polythiol-based compounds, wherein a peak area (%) of a polythiol compound represented by C8H18S6, which is measured through a high performance liquid chromatographic (HPLC) analysis graph obtained at a wavelength of 230 nm, ranges from 0.90% to 1.30%;
- and
- an isocyanate-based compound.
Dependencies are inferred from the claim text.