公开(公告)号：DE60215970D1

公开(公告)日：2006-12-21

申请号：DE60215970

申请日：2002-11-04

Applicant: ESSILOR INT

Inventor： KEITA GABRIEL ,  OBORDO OLIVEROS ,  MCCLIMANS ANNE ,  TURSHANI YUSEF

IPC: C08G18/10 ,  C08G18/72 ,  C08G18/38 ,  G02B1/04

Abstract: A method of fast curing polythiourethane transparent casted substrate, usable for making optical articles such as ophthalmic lenses, which comprises the steps of: 1) Providing a first component A comprising a polythiourethane prepolymer having isocyanate or isothiocyanate end groups and a viscosity at 25° C. ranging from 0.02 to 0.4 Pa.s; 2) Providing a second component B comprising a polythiourethane prepolymer having thiol (SH) end groups and a viscosity at 25° C. ranging from 0.2 to 2.0 Pa.s; 3) Mixing together first and second components A and B and filling a moulding cavity of a casting mould assembly with the resulting mixture; 4) Curing said mixture to obtain a transparent solid substrate, said curing step comprising: a) a first step for polymerizing said mixture to obtain a gel within 1 to 10 minutes; and b) a second step of post-curing the gel to obtain the transparent solid substrate; and 5) Recovering the transparent solid substrate from the mould.

公开(公告)号：DE60215970T2

公开(公告)日：2007-07-26

申请号：DE60215970

申请日：2002-11-04

Applicant: ESSILOR INT

Inventor： KEITA GABRIEL ,  OBORDO OLIVEROS ,  MCCLIMANS ANNE ,  TURSHANI YUSEF

IPC: C08G18/10 ,  C08G18/72 ,  C08G18/38 ,  G02B1/04

Abstract: A method of fast curing polythiourethane transparent casted substrate, usable for making optical articles such as ophthalmic lenses, which comprises the steps of: 1) Providing a first component A comprising a polythiourethane prepolymer having isocyanate or isothiocyanate end groups and a viscosity at 25° C. ranging from 0.02 to 0.4 Pa.s; 2) Providing a second component B comprising a polythiourethane prepolymer having thiol (SH) end groups and a viscosity at 25° C. ranging from 0.2 to 2.0 Pa.s; 3) Mixing together first and second components A and B and filling a moulding cavity of a casting mould assembly with the resulting mixture; 4) Curing said mixture to obtain a transparent solid substrate, said curing step comprising: a) a first step for polymerizing said mixture to obtain a gel within 1 to 10 minutes; and b) a second step of post-curing the gel to obtain the transparent solid substrate; and 5) Recovering the transparent solid substrate from the mould.

公开(公告)号：DE69912630T2

公开(公告)日：2004-09-23

申请号：DE69912630

申请日：1999-10-20

Applicant: ESSILOR INT

Inventor： KEITA GABRIEL ,  MCCLIMANS ANNE ,  WEBER STEVE ,  TURSHANI YASSIN

IPC: G02B1/04 ,  C08G18/22 ,  C08G18/38 ,  C08G75/08 ,  C08J5/00 ,  C08G18/18

公开(公告)号：DE69912630D1

公开(公告)日：2003-12-11

申请号：DE69912630

申请日：1999-10-20

Applicant: ESSILOR INT

Inventor： KEITA GABRIEL ,  MCCLIMANS ANNE ,  WEBER STEVE ,  TURSHANI YASSIN

IPC: G02B1/04 ,  C08G18/22 ,  C08G18/38 ,  C08G75/08 ,  C08J5/00 ,  C08G18/18

公开(公告)号：DE1124873T1

公开(公告)日：2002-05-23

申请号：DE99949010

申请日：1999-10-20

Applicant: ESSILOR INT

Inventor： KEITA GABRIEL ,  MCCLIMANS ANNE ,  WEBER STEVE ,  TURSHANI YASSIN

IPC: G02B1/04 ,  C08G18/22 ,  C08G18/38 ,  C08G75/08 ,  C08J5/00 ,  C08G18/18