发明授权
US08039577B2 Polyester polymer and copolymer compositions containing titanium nitride particles
有权
含有氮化钛颗粒的聚酯聚合物和共聚物组合物
- 专利标题: Polyester polymer and copolymer compositions containing titanium nitride particles
- 专利标题(中): 含有氮化钛颗粒的聚酯聚合物和共聚物组合物
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申请号: US12073244申请日: 2008-03-03
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公开(公告)号: US08039577B2公开(公告)日: 2011-10-18
- 发明人: Zhiyong Xia , Steven Lee Stafford , Susan Sims , Frederick Leslie Colhoun
- 申请人: Zhiyong Xia , Steven Lee Stafford , Susan Sims , Frederick Leslie Colhoun
- 申请人地址: MX San Pedro Graza Garcia
- 专利权人: Grupo Petrotemex, S.A. de C.V.
- 当前专利权人: Grupo Petrotemex, S.A. de C.V.
- 当前专利权人地址: MX San Pedro Graza Garcia
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 主分类号: C08K3/22
- IPC分类号: C08K3/22
摘要:
Polyester compositions are disclosed that include polyester polymers or copolymers having incorporated therein titanium nitride particles that provide one or more of the following advantages: improving the reheat properties of the compositions, improving the color of the compositions through reduced yellowness, and improving the UV-blocking properties of the compositions. Processes for making such compositions are also disclosed. The titanium nitride particles may be incorporated in the polyester by melt compounding, or may be added at any stage of the polymerization, such as during the melt-phase of the polymerization. A range of particle sizes may be used, as well as a range of particle size distributions. The polyester compositions are suitable for use in packaging made from processes in which a reheat step is desirable, or decreased yellowness is desired, or increased resistance to the effects of ultraviolet light is desired, or any combination of the foregoing.