Method for inhibiting crystal growth rate of amide compound and method for producing molded article of polyolefin-based resin

摘要

A method for inhibiting the crystal growth rate of an amide compound present in a molten polyolefin-based resin and a method for producing a polyolefin-based resin molded article are provided.;A phenol compound is incorporated into an amide compound-containing polyolefin-based resin such that a weight ratio, amide compound:phenol compound, is 60:40 to 10:90.

主权项

1. A method for producing a polyolefin-based resin molded article, comprising a step of molding a molten polyolefin-based resin composition in which crystals of an amide compound represented by the following general formula (1) are present in a polyolefin-based resin in a molten state, wherein the molten polyolefin-based resin composition contains a phenol compound, and a blending ratio of the amide compound and the phenol compound is 60:40 to 10:90 (weight ratio),
general formula (1): R1—(CONHR2)n  (1), wherein n represents an integer of 2 to 4, R1 represents a saturated or unsaturated aliphatic polycarboxylic acid residue having 3 to 6 carbon atoms, an alicyclic polycarboxylic acid residue having 3 to 25 carbon atoms, or an aromatic polycarboxylic acid residue having 6 to 25 carbon atoms, and two to four R2s are the same or different and each represent a saturated or unsaturated aliphatic amine residue having 5 to 22 carbon atoms, an alicyclic amine residue having 5 to 20 carbon atoms, or an aromatic amine residue having 6 to 20 carbon atoms, wherein the phenol compound is n-octadecyl-β-(4′-hydroxy-3′,5′-di-tert-butylphenyl)propionate, 2,4-bis(octylthiomethyl)-6-methylphenol, a compound represented by general formula (2b):wherein p represents an integer of 1 to 4, p R3s are the same or different and each represent a linear or branched alkyl group having 1 to 25 carbon atoms that may have an ester bond, a thioether bond, or an ether bond, and X represents a linear or branched alkylene group having 1 to 10 carbon atoms that may have an ester bond or an ether bond, or
a compound represented by general formula (2c):wherein q represents an integer of 1 to 4, q R3s are the same or different and each represent a linear or branched alkyl group having 1 to 25 carbon atoms that may have an ester bond, a thioether bond, or an ether bond, and Y represents a linear or branched alkylene group having 1 to 10 carbon atoms, and
wherein a blending amount of the phenol compound is 0.07 to 1 parts by weight per 100 parts by weight of the polyolefin-based resin.