Patent ID: 6235823
Filing Date: 2001-05-22
Classification: C07C,C08K,C08L

Abstract:
A crystalline polypropylene resin composition consisting essentially of a crystalline polypropylene resin and a .beta.-nucleating agent, said .beta.-nucleating agent being present in the composition in an amount effective for providing an increased proportion of .beta.-form crystals, and said .beta.-nucleating agent being at least one member selected from the group consisting of:(1) an amide compound of the formula:R.sup.2 --NHCO--R.sup.1 --CONH--R.sup.3 (1)wherein R.sup.1 represents a residue formed by elimination of the two carboxyl groups of a C.sub.3-20 saturated or unsaturated aliphatic dicarboxylic acid, a C.sub.6-30 saturated or unsaturated alicyclic dicarboxylic acid or a C.sub.8-30 aromatic dicarboxylic acid; R.sup.2 and R.sup.3 are the same or different and each represents a C.sub.3-12 cycloalkyl group, a C.sub.3-12 cycloalkenyl group, or a group of the formula: ##STR48##wherein R.sup.4 represents a hydrogen atom, a C.sub.1-2 straight- or branched-chain alkyl group, a C.sub.2-12 straight- or branched-chain alkenyl group, a C.sub.6-10 cycloalkyl group or a phenyl group; R.sup.5 represents a C.sub.1-12 straight- or branched-chain alkenyl group, a C.sub.2-12 straight- or branched-chain alkenyl group, a C.sub.6-10 cycloalkyl group or a phenyl group; and R.sup.6 and R.sup.7 each represents a C.sub.1-4 straight-or branched-chain alkylene group; with the proviso that when R.sup.4 is a hydrogen atom, a C.sub.1-12 alkyl group or a C.sub.6-10 cycloalkyl group, R.sup.1 is a residue formed by the elimination of the two carboxyl group of a C.sub.6 or C.sub.8 saturated aliphatic dicarboxylic acid,(2) an amide compound of the formula:R.sup.9 --CONH--R.sup.8 --NHCO--R.sup.10 (2)wherein R.sup.8 represents a residue formed by elimination of the two amino groups of a C.sub.4-28 alicyclic diamine, a C.sub.4-14 5- or 6- membered heterocyclic diamine containing 1 or 2 nitrogen or sulfur atoms in its ring or a C.sub.6-28 aromatic diamine; R.sup.9 and R.sup.10 are the same or different and each represents a C.sub.3-12 cycloalkyl group, a C.sub.3-12 cycloalkenyl group, or a group of the formula: ##STR49##wherein R.sup.11 represents a hydrogen atom, a C.sub.1-12 straight- or branched-chain alkyl group, a C.sub.2-12 straight- or branched-chain alkyl group, a C.sub.6-10 cycloalkyl group or a phenyl group; R.sup.12 represents a C.sub.1-12 straight- or branched-chain alkyl group, a C.sub.2-12 alkenyl group, a C.sub.6-10 cycloalkyl group or a phenyl group; R.sup.13 and R.sup.14 each represents a C.sub.1-4 straight- or branched-chain alkylene group; with the proviso that R.sup.8 is not: ##STR50##and(3) an amide compound of the formula:R.sup.16 --CONH--R.sup.15 --CONH--R.sup.17 (3)wherein R.sup.15 represents a residue formed by elimination of one amino group and one carboxyl group of a C.sub.2-29 saturated or unsaturated aliphatic amino acid, a C.sub.7-13 saturated or unsaturated alicyclic amino acid or a C.sub.7-15 aromatic amino acid; and R.sup.16 and R.sup.17 are the same or different and R.sup.16 has the same meaning as R.sup.9 or R.sup.10 in the formula (2) and R.sup.17 has the same meaning as R.sup.2 or R.sup.3 in the formula (1).