METHOD OF MAKING PORE-FREE MOLDING WITH THICK SECTION
摘要
of Invention Method of producing a polymer molding free of pores containing a thick section comprising mixing monomer charge containing at least one norbornene monomer having tricyclic or higher cyclic structure, a ring-opening catalyst system and a halogen source; introducing the monomer charge into a mold wherein temperature of the monomer charge is higher then temperature of the inside of the mold; polymerizing the monomer charge to a polymer molding while pressurizing the molding above the injection pressure; cooling the molding so that the temperature difference is less than 80.degree.C between the maximum curing exothermal temperature and the glass transition temperature of the molding; and removing a pore free, rigid polymer molding from the mold wherein monomer conversion to polymer in the molding is in excess of 98%. 0029PApp.GAK
申请公布号
CA2012078(A1)
申请公布日期
1990.09.15
申请号
CA19902012078
申请日期
1990.03.13
申请人
OZEKI, HIROSHI;TOSHIMA, KAZUNORI;YAMATO, MOTOYUKI;CHONO, KOJI
发明人
OZEKI, HIROSHI;TOSHIMA, KAZUNORI;YAMATO, MOTOYUKI;CHONO, KOJI