发明名称 |
High refractive index plastic lens and composition therefor |
摘要 |
The present invention discloses a composition for high refractive index plastic lens consisting of a monomer mixture wherein a particular aliphatic thiol compound is added to a polyisocyanate represented by general formula (1): (* CHEMICAL STRUCTURE *) (1) wherein each X represents a hydrogen atom or a methyl group; each R represents a chlorine atom, a bromine atom, a methyl group or an ethyl group; m represents an integer of 0-4; and n represents an integer of 2-4, and a polythiol of formula (2): (* CHEMICAL STRUCTURE *) (2) and a high refractive index plastic lens made of a urethane-containing resin obtained by polymerizing said composition.
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申请公布号 |
US5306799(A) |
申请公布日期 |
1994.04.26 |
申请号 |
US19930095346 |
申请日期 |
1993.07.23 |
申请人 |
MITSUI TOATSU CHEMICALS, INC. |
发明人 |
KOBAYASHI, SEIICHI;SASAGAWA, KATSUYOSHI;KANEMURA, YOSHINOBU |
分类号 |
C08G18/38;C08G18/76;G02B1/04;(IPC1-7):C08G18/32 |
主分类号 |
C08G18/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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