Calcium sulphate-based products |
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| 申请号 | US14654300 | 申请日 | 2013-12-19 | 公开(公告)号 | US10131577B2 | 公开(公告)日 | 2018-11-20 |
| 申请人 | CertainTeed Gypsum, Inc.; | 发明人 | Robin Fisher; | ||||
| 摘要 | This invention relates to improved high temperature resistant calcium sulphate-based products e.g. gypsum wallboard products and, in particular, to products having reduced shrinkage at high temperatures. The invention provides calcium sulphate-based product comprising gypsum and a shrinkage resistance additive. The shrinkage resistance additive is melamine polyphosphate or melamine pyrophosphate. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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