PHOSPHORUS-CONTAINING THERMOPLASTIC POLYESTER AND PHOSPHORUS-CONTAINING HEAT-SHRINKABLE TUBE MADE THEREFROM
申请人:NAN YA PLASTICS CORPORATION
公开号:US20160215123A1
公开(公告)日:2016-07-28
A thermoplastic polyester is disclosed to contain a flame retardant and has an intrinsic viscosity between 0.70 and 1.10 dL/g, and for making the disclosed polyester a phosphorus-containing flame retardant is bound onto the molecular chains of the matrix polymer through modification of the molecular structure of the matrix polymer; wherein the disclosed polyester due to having a content of phosphorus between 3,000 and 30,000 ppm based on the weight of the polyester is suitable for making phosphorus-containing heat-shrinkable tubes that possess permanently flame-retardant properties, has a UL94 VTM-2 flame-retardant rating, and even meets the requirements for UL94 VTM-0 flame-retardant rating.