发明授权
- 专利标题： High specific gravity material
- 专利标题（中）： 高比重材料
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申请号： US959956申请日： 1997-10-24
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公开(公告)号： US5786416A公开(公告)日： 1998-07-28
- 发明人: John Christopher Gardner , Peter James Gardner , Ian Peter Oliver , Terry Peake
- 申请人： John Christopher Gardner , Peter James Gardner , Ian Peter Oliver , Terry Peake
- 申请人地址： GB2 GB2
- 专利权人： Gardner; John C.,Gardner; Peter J.
- 当前专利权人： Gardner; John C.,Gardner; Peter J.
- 当前专利权人地址： GB2 GB2
- 优先权： GBX9318437 19930906
- 主分类号： C08K3/08
- IPC分类号： C08K3/08 ; C08K9/08 ; C08L53/00 ; C08L53/02 ; C08L55/02 ; F42B12/74 ; A01K95/00 ; F42B7/00 ; F42B12/72
摘要：
A high specific gravity composition suitable for use as a lead-substitute, especially for firearms ammunition and angling weights, comprises: (i) a polymer matrix comprising: (a) at least one rigid thermoplastic polymer component, e.g. polypropylene, polystyrene, etc. and (b) at least one elastomeric thermoplastic polymer component, e.g. various polystyrene-based copolymers; and (ii) dispersed in the polymer matrix particles of a high specific gravity weight material having a density and present in an amount such that the composition has a specific gravity of greater than one, preferably a specific gravity in the range 8 to 12. The high specific gravity weight material is preferably tungsten powder.
公开/授权文献
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