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公开(公告)号：US20210331354A1
公开(公告)日：2021-10-28
申请号：US17270629
申请日：2019-08-23
摘要： Provided is a method for preparing a polymeric article including introducing a polymerizable composition into a mold; sealing the composition within the mold using a sealing means; placing the mold into a convection cure oven; subjecting the polymerizable composition to a cure cycle sufficient to partially cure the composition; extracting the mold from the convection cure oven; optionally, removing the sealing means from the mold; placing the mold into an auxiliary curing chamber which is placed into the convection cure oven, or placing the mold into an auxiliary curing chamber which is within the convection cure oven; subjecting the polymerizable composition to a further cure cycle to complete polymerization of the composition, thereby forming a cured polymeric article; and removing the cured polymeric article from the mold.
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2.发明公开公开(公告)号：US20240158554A1
公开(公告)日：2024-05-16
申请号：US18549185
申请日：2022-03-08
IPC分类号： C08F222/10 , C08F4/38 , G02B1/04
CPC分类号： C08F222/1061 , C08F4/38 , G02B1/041
摘要： Provided is a polymerizable composition including (a) a polymerizable component comprising a diol bis(allyl carbonate) and/or a pre-polymer thereof; and (b) a polymerization initiator component including: (i) a di(C6-C10 alkyl) peroxydicarbonate, and (ii) an organic peroxide having one peroxy, one peroxycarbonate, or one peroxybenzoate group and a 1,1-dimethylalkyl group bonded to a peroxy oxygen, where (ii) comprises a molecular weight ranging from 200 to 250 g/mole, the polymerization initiator (b) is free of diisopropyl peroxydicarbonate, (i) comprises an amount ranging from 4.87% to 7.90% by weight relative to the total solids of the polymerizable composition and (ii) comprises an amount within the range defined by the following formula: (4.406X2−0.592X+0.021)≤Y≤(0.726X2−0.121X+0.009) where X corresponds to the weight fraction of (i) and Y corresponds to the weight fraction of (ii). Also provided is a method of making an optical article from the polymerizable composition.
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公开(公告)号：US11433572B2
公开(公告)日：2022-09-06
申请号：US17270629
申请日：2019-08-23
IPC分类号： B29C35/02 , B29D11/00 , B29C39/02 , B29C39/26 , B29C39/38 , B29K69/00 , B29K105/00 , B29L11/00
摘要： Provided is a method for preparing a polymeric article including introducing a polymerizable composition into a mold; sealing the composition within the mold using a sealing means; placing the mold into a convection cure oven; subjecting the polymerizable composition to a cure cycle sufficient to partially cure the composition; extracting the mold from the convection cure oven; optionally, removing the sealing means from the mold; placing the mold into an auxiliary curing chamber which is placed into the convection cure oven, or placing the mold into an auxiliary curing chamber which is within the convection cure oven; subjecting the polymerizable composition to a further cure cycle to complete polymerization of the composition, thereby forming a cured polymeric article; and removing the cured polymeric article from the mold.
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