公开(公告)号：DE3575563D1

公开(公告)日：1990-03-01

申请号：DE3575563

申请日：1985-07-19

Applicant: SHOWA DENKO KK

Inventor： MARUYAMA SATOSHI ,  YOKOTA YOSHIHISA ,  GOTO MASATAKA

IPC: C08F2/44 ,  C08F2/48 ,  C08F2/50 ,  C08G75/04

公开(公告)号：EP0231375A4

公开(公告)日：1987-11-12

申请号：EP85903696

申请日：1985-07-19

Applicant: SHOWA DENKO KK

Inventor： MARUYAMA SATOSHI ,  YOKOTA YOSHIHISA ,  GOTO MASATAKA

IPC: C08F2/44 ,  C08F2/48 ,  C08F2/50 ,  C08G75/04

CPC classification number: C08F2/48

Abstract: A photo-setting composition prepared by compounding a polymerizable monomer and/or oligomer with (1) an UV absorber having extinction coefficients of 2,000/M.cm or more at 300 to 350 nm and 1,000/M.cm or less at 360 nm and (2) a photopolymerization initiator having an extinction coefficient of 10/M.cm or less at 390 nm. A colorless, transparent, thick setting product uniformly set to the core can be obtained by irradiating the composition with UV rays from a light source emitting light of 360 to 380 nm.

公开(公告)号：JPS6239211A

公开(公告)日：1987-02-20

申请号：JP17802585

申请日：1985-08-13

Applicant: SHOWA DENKO KK ,  TOKAI KOGAKU KK

Inventor： OSUGA HIROSHI ,  GOTO MASATAKA ,  HIRATSUKA HIDEAKI

IPC: G02C7/02 ,  B29C39/02 ,  B29C39/32 ,  B29K105/32 ,  B29L11/00

Abstract: PURPOSE:To enable to settle an unfavorable condition such as mold release and to contrive shortening in polymerizing time, by a method wherein polymerization is made to progress further by removing an annular gasket from a matrix at a stage that a monomer or prepolymer reaches a semicured gelatinous state. CONSTITUTION:A liquid monomer or liquid prepolymer is cast between two pieces of matrices which have been mated at intervals through an annular gasket, and polymerization is made to progress further by removing the annular gasket from the matrix at the time when the liquid monomer or liquid prepolymer reaches a semicured gelatinous state. The time of removing the annular gasket from the matrix, it is good that the same is performed at a rate of reaction of the liquid monomer or liquid prepolymer between 12-60%, which is desirably 14-50%. When cure after removal of the gasket is performed further under existence of oxygen, mold release during molding does not occur at all. With this construction, production yield is improved drastically without generating an unfavorable condition such as the mold release. In addition to the above, as shrinkage of a reaction thing can be allowed, the temperature of the polymerization can be increased and shortening in polymerizing time is contrivable.

公开(公告)号：JPH0335092B2

公开(公告)日：1991-05-27

申请号：JP17802585

申请日：1985-08-13

Applicant: SHOWA DENKO KK ,  TOKAI KOGAKU KK

Inventor： OOSUGA HIROSHI ,  GOTO MASATAKA ,  HIRATSUKA HIDEAKI

IPC: G02C7/02 ,  B29C39/02 ,  B29C39/32 ,  B29K105/32 ,  B29L11/00