Invention Application
- Patent Title: MODIFIERS FOR GYPSUM SLURRIES AND METHOD OF USING THEM
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Application No.: PCT/US2006/022936Application Date: 2006-06-13
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Publication No.: WO2006138277A3Publication Date: 2006-12-28
- Inventor: LETTKEMAN, Dennis, M. , SHAKE, Michael, P. , LIU, Qingxia , WILSON, John, W. , RANDALL, Brian , BLACKBURN, David, R.
- Applicant: UNITED STATES GYPSUM COMPANY , LETTKEMAN, Dennis, M. , SHAKE, Michael, P. , LIU, Qingxia , WILSON, John, W. , RANDALL, Brian , BLACKBURN, David, R.
- Applicant Address: 550 West Adams Street Chicago, IL 60661-3637 US
- Assignee: UNITED STATES GYPSUM COMPANY,LETTKEMAN, Dennis, M.,SHAKE, Michael, P.,LIU, Qingxia,WILSON, John, W.,RANDALL, Brian,BLACKBURN, David, R.
- Current Assignee: UNITED STATES GYPSUM COMPANY,LETTKEMAN, Dennis, M.,SHAKE, Michael, P.,LIU, Qingxia,WILSON, John, W.,RANDALL, Brian,BLACKBURN, David, R.
- Current Assignee Address: 550 West Adams Street Chicago, IL 60661-3637 US
- Agency: JANCI, David, F.
- Priority: US11/152,317 20050614; US11/450,068 20060609
- Main IPC: C04B11/00
- IPC: C04B11/00
Abstract:
An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a polycarboxylate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the polycarboxylate dispersant. Preferred modifiers include cement, lime, slaked lime, soda ash, carbonates, silicates and phosphates.
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