POLYESTER RESIN
PROBLEM TO BE SOLVED: To provide a polyester resin that can reduce the formation of by-products on the molding and the soiling of the metal mold on its molding and shows excellent transparency. SOLUTION: This polyester resin is produced by performing a polycondensation through esterification reactio...
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| creator | ABU HIDEJI FUJIMORI YOSHITAKA NUKII MASAHIRO |
| description | PROBLEM TO BE SOLVED: To provide a polyester resin that can reduce the formation of by-products on the molding and the soiling of the metal mold on its molding and shows excellent transparency. SOLUTION: This polyester resin is produced by performing a polycondensation through esterification reaction or ester interchange reaction of a dicarboxylic acid component consisting mainly of terephthalic acid or its ester-forming derivative with a diol component consisting mainly of ethylene glycol. When injection molding is carried out at 280°C by using the polyester resin described above, the content difference of the cyclic trimer in the polyester resin (CTS-CT0) after (CTSin %wt.) and before (CT0in %wt.) injection molding is less than 0.10 %wt, and the falling crystallizing temperature (Tc2) of the resin of the above stated molded body is lower than 180°C. COPYRIGHT: (C)2006,JPO&NCIPI |
| format | Patent |
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SOLUTION: This polyester resin is produced by performing a polycondensation through esterification reaction or ester interchange reaction of a dicarboxylic acid component consisting mainly of terephthalic acid or its ester-forming derivative with a diol component consisting mainly of ethylene glycol. When injection molding is carried out at 280°C by using the polyester resin described above, the content difference of the cyclic trimer in the polyester resin (CTS-CT0) after (CTSin %wt.) and before (CT0in %wt.) injection molding is less than 0.10 %wt, and the falling crystallizing temperature (Tc2) of the resin of the above stated molded body is lower than 180°C. 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SOLUTION: This polyester resin is produced by performing a polycondensation through esterification reaction or ester interchange reaction of a dicarboxylic acid component consisting mainly of terephthalic acid or its ester-forming derivative with a diol component consisting mainly of ethylene glycol. When injection molding is carried out at 280°C by using the polyester resin described above, the content difference of the cyclic trimer in the polyester resin (CTS-CT0) after (CTSin %wt.) and before (CT0in %wt.) injection molding is less than 0.10 %wt, and the falling crystallizing temperature (Tc2) of the resin of the above stated molded body is lower than 180°C. COPYRIGHT: (C)2006,JPO&NCIPI</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING |
| title | POLYESTER RESIN |
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