发明名称 |
Process for Manufacturing a Polarized Poly(thio)urethane Optical Lens |
摘要 |
The invention relates to a process for manufacturing a polarized poly(thio)urethane-based optical article comprising the steps of disposing a polarizing film or wafer in a molding cavity of a two part mold assembly; pouring a polymerizable composition comprising at least one polyiso(thio)cyanate monomer and at least one polyol and/or polythiol; or a mixture of at least one liquid NCO and/or NCS terminated poly(thio)urethane prepolymer and at least one liquid OH and/or SH terminated poly(thio)urethane prepolymer; with the proviso that the polymerizable composition has a ratio of NH<SUB>2 </SUB>functionalities to the NCO or NCS functionalities of less than 0.9; polymerizing the composition under such conditions that a hard gel is obtained in less than 30 minutes; completing the polymerization; and opening the two part mold so as to recover the bubble free optical article.
|
申请公布号 |
US2007202265(A1) |
申请公布日期 |
2007.08.30 |
申请号 |
US20070678180 |
申请日期 |
2007.02.23 |
申请人 |
ESSILOR INTERNATIONAL ( COMPAGNIE GENERALE GENERALE D'OPTIQUE) |
发明人 |
BERZON RONALD |
分类号 |
B05D7/00 |
主分类号 |
B05D7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|