1 results about "Polysorbate ester" patented technology

The invention belongs to the field of macromolecules, and relates to a fat aromatic copolyester foaming composition, fat aromatic copolyester foaming beads, a preparation method of the fat aromatic copolyester foaming beads and a foaming bead forming body. The composition comprises fat aromatic copolyester, a shrinkage inhibitor, a stiffening agent, a compatilizer and an auxiliary agent, based on 100 parts by weight of the fat aromatic copolyester, the content of the shrinkage inhibitor is 0.2-2 parts by weight, the content of the stiffening agent is 0.2-5 parts by weight, the content of the compatilizer is 0.1-2 parts by weight, and the content of the assistant is 0.01-2 parts by weight; the shrinkage inhibitor is selected from at least one of polysorbate, sucrose ester, sorbitan fatty acid ester, palmitic acid diglyceride and isosorbide dinitrate. The shrinkage inhibitor, the stiffening agent and the compatilizer are used and play a synergistic effect, so that the shrinkage rate of the fat aromatic copolyester-based foamed bead is obviously reduced, and the application fields of a molded body in electronic and electric appliance packaging, precision mechanical product packaging and the like are expanded.