POLYESTER RESIN COMPOSITION FOR INJECTION MOLDING AND INJECITON MOLDED ARTICLE

PURPOSE:To decrease melt viscosity and improve processability without decreas ing mol.wt. by compounding a polyester resin for injection molding with a specific compd. CONSTITUTION:1 mol of pyromellitic dianhydride is reacted with about 2 mol of 12-28C alkylamine to give a bisamide compd., which is...

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Bibliographic Details
Main Authors IKENAGA NAOYUKI, DOBASHI MASAAKI, HORIBATAKE NOBORU
Format Patent
LanguageEnglish
Published 13.11.1992
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:PURPOSE:To decrease melt viscosity and improve processability without decreas ing mol.wt. by compounding a polyester resin for injection molding with a specific compd. CONSTITUTION:1 mol of pyromellitic dianhydride is reacted with about 2 mol of 12-28C alkylamine to give a bisamide compd., which is condensed by dehydration to give a compd. of the formula wherein R is 12-28C linear or branched alkyl. 100 pts.wt. polyester resin for injection (pref. polyethylene or polybutylene terephthalate) is compounded with 0.1-20 pts.wt. compd. of the formula to give the title compsn., which is injection molded.
Bibliography:Application Number: JP19910097209