发明名称 |
CLAY-FREE READY-MIXED SETTING-TYPE JOINT COMPOUND |
摘要 |
A two part joint compound which sets by hydration of calcium sulfate hemihydrate to gypsum and is clay-free. One part includes an in-situ acidic acrylate copolymer thickener (i.e., an associative thickener) with the calci um sulfate hemihydrate, along with a non-calcium bearing phosphate set preventer. The first part contains water, but remains unset for at least 175 days. The second part includes a set initiator compound having a cation with a log K value greater than calcium ions. The second part is mixed with the first part when setting is desired. |
申请公布号 |
CA2327426(A1) |
申请公布日期 |
2001.06.29 |
申请号 |
CA20002327426 |
申请日期 |
2000.12.04 |
申请人 |
UNITED STATES GYPSUM COMPANY |
发明人 |
ESPINOZA, THERESE A.;MILLER, CHARLES J.;STEVENS, RICHARD B. |
分类号 |
C04B22/14;C04B28/14;C04B40/06 |
主分类号 |
C04B22/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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