PREPARATION OF PREPOLYMER
PURPOSE:To prepare a liquid prepolymer capable of giving a cured polymer dyeable without causing dyeing speck, by adding a specific amount of a radical polymerization initiator to diethylene glycol bisallyl carbonate, and keeping the mixture at a specific temperature. CONSTITUTION:Diethylene glycol...
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| creator | FUTAKI KOUJI |
| description | PURPOSE:To prepare a liquid prepolymer capable of giving a cured polymer dyeable without causing dyeing speck, by adding a specific amount of a radical polymerization initiator to diethylene glycol bisallyl carbonate, and keeping the mixture at a specific temperature. CONSTITUTION:Diethylene glycol bisallyl carbonate is compounded with 0.3-2.3 wt% radical polymerization initiator (e.g. isobutyl peroxide) and maintained at 5-35 deg.C for 6-72hr to obtain the objective liquid prepolymer. EFFECT:Since the reaction is carried out at a low temperature, the gelation of the prepolymer can be minimized and the prepolymer can be poured easily into a glass mold. |
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CONSTITUTION:Diethylene glycol bisallyl carbonate is compounded with 0.3-2.3 wt% radical polymerization initiator (e.g. isobutyl peroxide) and maintained at 5-35 deg.C for 6-72hr to obtain the objective liquid prepolymer. EFFECT:Since the reaction is carried out at a low temperature, the gelation of the prepolymer can be minimized and the prepolymer can be poured easily into a glass mold.</description><language>eng</language><subject>AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES ; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS ; METALLURGY ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; PHYSICS ; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR ; SHAPING OR JOINING OF PLASTICS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING ; WORKING OF PLASTICS ; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL</subject><creationdate>1982</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19820817&DB=EPODOC&CC=JP&NR=S57133106A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19820817&DB=EPODOC&CC=JP&NR=S57133106A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FUTAKI KOUJI</creatorcontrib><title>PREPARATION OF PREPOLYMER</title><description>PURPOSE:To prepare a liquid prepolymer capable of giving a cured polymer dyeable without causing dyeing speck, by adding a specific amount of a radical polymerization initiator to diethylene glycol bisallyl carbonate, and keeping the mixture at a specific temperature. 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| subjects | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | PREPARATION OF PREPOLYMER |
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