Invention Grant
- Patent Title: Gypsum based compositions
- Patent Title (中): 基于石膏的组合物
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Application No.: US12598184Application Date: 2008-04-11
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Publication No.: US08377199B2Publication Date: 2013-02-19
- Inventor: Cedric Biguenet , Sam O'Keefe , Agnès Smith , Thierry Chotard
- Applicant: Cedric Biguenet , Sam O'Keefe , Agnès Smith , Thierry Chotard
- Applicant Address: GB Coventry
- Assignee: BPB Limited
- Current Assignee: BPB Limited
- Current Assignee Address: GB Coventry
- Agency: GrayRobinson, P.A.
- Agent Michael J. Colitz, III
- Priority: GB0708382.7 20070501
- International Application: PCT/GB2008/050255 WO 20080411
- International Announcement: WO2008/132497 WO 20081106
- Main IPC: C04B11/00
- IPC: C04B11/00

Abstract:
A gypsum stucco composition comprising the following components finely divided; calcium sulphate hemihydrate in calcined solid beta crystalline form; and in intimate mixture with said finely divided calcium sulphate hemihydrate and mixed therewith no later than calcination to form the hemihydrate, a sulphate salt comprising at least one of ammonium sulphate and aluminium sulphate, in an amount such that when the stucco composition is mixed with water and allowed to set, the resulting set plaster has increased compressive strength, flexural strength and/or E-modulus compared to a set plaster produced from said finely divided calcium sulphate hemihydrate containing no said sulphate salt.
Public/Granted literature
- US20100288415A1 Gypsum Based Compositions Public/Granted day:2010-11-18
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