发明授权
- 专利标题： Acid tolerant calcium carbonate composition and uses therefor
- 专利标题（中）： 耐酸碳酸钙组合物及其用途
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申请号： US614863申请日： 1996-03-13
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公开(公告)号： US5711799A公开(公告)日： 1998-01-27
- 发明人: Kevin Snowden , Jose M. Rodriguez , Kuan-Ting Wu
- 申请人： Kevin Snowden , Jose M. Rodriguez , Kuan-Ting Wu
- 申请人地址： GA Roswell
- 专利权人： ECC International Inc.
- 当前专利权人： ECC International Inc.
- 当前专利权人地址： GA Roswell
- 主分类号： C04B14/28
- IPC分类号： C04B14/28 ; C09C1/02 ; C09C3/00 ; C09C3/06 ; C09C3/10 ; D21H17/67
摘要：
An improved form of calcium carbonate which is acid tolerant to enable its use as a filler material in the making of neutral to weakly acid paper, and a process for producing this acid tolerant calcium carbonate are provided. This acid tolerant calcium carbonate comprises a mixture of calcium carbonate with at least about 0.1 percent, based on the dry weight of the calcium carbonate, of sodium aluminate together with at least about 0.1 percent, based on the dry weight of the calcium carbonate, of one or more weak acids.
公开/授权文献
- USD292319S Sliding glass door 公开/授权日：1987-10-13
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