| 摘要 |
PURPOSE:To provide the titled compsn. which has improved processability and gives moldings having improved hardness, strength, heat distortion temp., etc., by blending a tetracarboxylic tetraester contg. at least two (in total) of cycloalkyl and/or aryl groups with a vinyl chloride resin. CONSTITUTION:1-30pts.wt. tetraester of a 3,4-dicarboxy-1,2,3,4- tetrahydronaphthyl-1-succinic dianhydride contg. at least two groups (in total) of cycloalkyl and aryl groups and having the formula (wherein R<1>-R<4> are each cycloalkyl, aryl, 1-8C alkyl) is blended with 100pts.wt. vinyl chloride resin (e.g. vinyl chloride homopolymer or vinyl chloride/ethylene copolymer) to obtain the desired vinyl chloride resin compsn. An example of the compd. of the formula is tetra(cyclohexyl) ester of 3,4-dicarboxy-1,2,3,4- tetrahydronaphthyl-1-succinic dianhydride.
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