发明授权
- 专利标题: Article having a corrosion inhibiting coating
- 专利标题(中): 具有腐蚀抑制涂层的物品
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申请号: US304399申请日: 1989-01-30
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公开(公告)号: US4849297A公开(公告)日: 1989-07-18
- 发明人: J. Douglas Mansell , Laurence E. Jones , Harlan B. Johnson , Thomas G. Krivak , Dennis W. Carson
- 申请人: J. Douglas Mansell , Laurence E. Jones , Harlan B. Johnson , Thomas G. Krivak , Dennis W. Carson
- 申请人地址: PA Pittsburgh
- 专利权人: PPG Industries, Inc.
- 当前专利权人: PPG Industries, Inc.
- 当前专利权人地址: PA Pittsburgh
- 主分类号: C09C1/28
- IPC分类号: C09C1/28 ; C09D5/08
摘要:
Corrosion inhibiting calcium-containing amorphous precipitated silica is described. The silica is prepared by admixing simultaneously in a reactor aqueous alkali metal silicate, e.g., sodium silicate, acidifying agent, e.g., hydrochloric acid, and a water-soluble source of calcium, e.g., calcium chloride. The product contains from 6 to 9 weight percent calcium (as CaO). The silica product may be incorporated into a coating composition used for corrodible metallic surfaces.