Plasticised gypsum composition
AssigneeAccuflex Products, Inc.
InventorsPeter P. Roosen, Gerard H. Koldyk, Frank Pap
Life of this patent
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Abstract
A composition comprising gypsum plasticized by a polymer and containing gypsum in the range of about 40% to about 90% by weight. In a preferred embodiment the polymer is polyurethane. A wide variety of applications of the composition are described.
Claims38
A cured composition derived from a mixture comprising the dry components:
- (a) a polymerisable icocyanate;
- and
- (b) gypsum and castor oil, the gypsum being present in the range 50% to 90% by weight in component (b), the balance being the castor oil;
- the composition containing isocyanate in the range of about 5% to 20% by weight.
A composition comprising gypsum plasticised by a polyurethane and derived from a mixture of the dry components:
- (a) a polymerisable isocyanate;
- and
- (b) a mixture of gypsum and a glyceride containing gypsum in the range of about 40% to about 90% by weight, the balance being the glyceride;
- the composition containing component (a), the isocyanate, in the range of about 5% to about 20% by weight.
An article of manufacture comprising, a composition comprising gypsum plasticised by a polyurethane and derived from a mixture of the components:
- (a) a polymerisable isocyanate;
- and
- (b) a mixture of gypsum and a glyceride containing gypsum in the range of about 40% to about 90% by weight, the balance being the glyceride;
- the composition containing component (a), the isocyanate, in the range of about 5% to about 20% by weight.
An article of manufacture comprising a cured composition derived from a mixture comprising the components:
- (a) a polymerisable isocyanate;
- and
- (b) gypsum and castor oil, the gypsum being present in the range 50% to 90% by weight in component (b), the balance being the castor oil;
- the composition containing isocyanate in the range of about 5 to 20% by weight.
A composition consisting of gypsum plasticised by a polyurethane and derived from a mixture of the components:
- a) a polymerisable isocyanate;
- and
- b) a mixture of gypsum and a glyceride containing gypsum in the range of about 40% to about 90% weight, the balance being the glyceride;
- the composition containing component (a), the isocyanate, in the range of about 5% to about 20% by weight.
Dependencies are inferred from the claim text.