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US4244933A Calcium carbonate particles and processes for preparing same 失效
碳酸钙颗粒及其制备方法

Calcium carbonate particles and processes for preparing same
摘要:
The invention provides calcium carbonate particles comprising a core and projections formed thereon, and process for preparing same. The calcium carbonates of this invention are useful as fillers and pigments for rubbers, plastics, papers, etc. because of their peculiar configuration and unique properties.
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