| 摘要 |
A method for the production of thermoplastic polyester compositions comprising mixing a normally flammable thermoplastic polyester, preferably containing at least 80% by weight of repeating units of ethylene terephthalate, tetramethylene terephthalate or ethylene-1:2-diphenoxyethane-4,4'-dicarboxylate units, an effective amount of fire-retardant additives and an aqueous colloidal dispersion of PTFE, subjecting the mixture to conditions under which the polyester becomes molten and removing volatile materials from the melt. |
