Calcium phosphate cement and calcium phosphate cement compositio

Details Calcium phosphate cement and calcium phosphate cement compositio Calcium phosphate cement and calcium phosphate cement compositio

1998-08-27

1999-11-30

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106 35, 106690, 4332281, 606 76, 623 16, C04B 1202, C04B 2438

Patent

active

059935359

ABSTRACT:
A calcium phosphate cement and a calcium phosphate cement composition are disclosed. The calcium phosphate cement comprises a calcium phosphate powder having an average particle diameter of 20 .mu.m or smaller and a tap density of 35% or higher, and a polysaccharide. The polysaccharide is preferably a dextran sulfate (e.g., dextran sulfate sodium) having an average particle diameter of 0.1 to 100 .mu.m. The calcium phosphate cement composition comprises the above specific calcium phosphate powder and a liquid for cement mixing comprising an aqueous solution containing 30 to 60 wt % dextran sulfate (e.g., dextran sulfate sodium or dextran sulfate potassium). The calcium phosphate powder preferably comprises a tetracalcium phosphate powder and an equimolar amount of a calcium hydrogen phosphate powder as main components.

REFERENCES:
patent: Re33161 (1990-02-01), Brown et al.
patent: 5152836 (1992-10-01), Hirano et al.
patent: 5180426 (1993-01-01), Sumita
patent: 5281404 (1994-01-01), Sumita
patent: 5342441 (1994-08-01), Mandai et al.
JAPIO Patent Abstract No. JP402297374A, abstract of Japanese Patent Specification No. 02-297374, (Dec. 1990).
JAPIO Patent Abstract No. JP403128061A, abstract of Japanese Patent Specification No. 03-128061, (May 1991).
JAPIO Patent Abstract No. JP407039577A, abstract of Japanese Patent Specification No. 07-039577, (Feb. 19995).

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