초록

A cement system for use in freeform fabrication includes a binder composition, which comprises an organic acid and/or an inorganic acid including a phosphate ion, a polyacid, and a primarily aqueous solvent.

대표청구항 ▼

1. A binder composition comprising:an organic acid that comprises citric acid and an inorganic acid including a phosphate ion; a polymer containing acid groups; and a primarily aqueous solvent. 2. A binder composition, which comprises:an organic acid; a polymer containing acid groups; and a primaril

1. A binder composition comprising:an organic acid that comprises citric acid and an inorganic acid including a phosphate ion; a polymer containing acid groups; and a primarily aqueous solvent. 2. A binder composition, which comprises:an organic acid; a polymer containing acid groups; and a primarily aqueous solvent; wherein said organic acid comprises phytic acid. 3. A binder composition, which comprises:an organic acid including citric acid an inorganic acid including a phosphate ion; a polymer containing acid groups; a primarily aqueous solvent; and a colorant; wherein said colorant comprises a pigment suspended as particles in said composition and a dye dissolved in said composition. 4. A binder composition according to claim 2, further comprising a colorant.5. A binder compositor according to claim 2, wherein about 70 wt. % to about 90 wt. % of said composition is water.6. A binder composition according to claim 2, wherein said composition has a pH ranging from about 2.5 to about 5.5.7. A binder composition according to claim 2, which further comprises at least one alcohol.8. A binder composition according to claim 7, wherein said alcohol is present ranging from about 0.5 wt. % to about 13.0 wt. %.9. A binder composition according to claim 2, wherein said polymer containing acid groups is composed, at leas in part, of(meth)acrylic monomers.10. A binder composition according to claim 2, which further comprises at least one surfactant and/or at least one humectant.11. A binder composition according to claim 3, wherein about 70 wt. % to about 90 wt. % of said composition is water.12. A binder composition according to claim 3, wherein said organic acid comprises citric acid.13. A binder composition according to claim 3, wherein said composition has a pH ranging from about 2.5 to about 5.5.14. A binder composition according to claim 3, which further comprises at least one alcohol.15. A binder composition according to claim 14, wherein said alcohol is present ranging from about 0.5 wt. % to about 13.0 wt. %.16. A binder composition according to claim 3, wherein said polymer containing acid groups is composed, at least in part, of(meth)acrylic monomers.17. A binder composition according to claim 3, which further comprises at least one surfactant and/or at least one humectant.18. A binder composition according to claim 1, further comprising a colorant.19. A binder composition according to claim 1, wherein about 70 wt. % to about 90 wt. % of said composition is water.20. A binder composition according to claim 1, wherein said composition has a pH ranging from about 2.5 to about 5.5.21. A binder composition according to claim 1, which further comprises at least one alcohol.22. A binder composition according to claim 21, wherein said alcohol is present ranging from about 0.5 wt. % to about 13.0 wt. %.23. A binder composition according to claim 1, wherein said polymer containing acid groups is composed, at least in part, of(meth)acrylic monomers.24. A binder composition according to claim 1, which further comprises at least one surfactant and/or at least one humectant.