Assertion: gypsum's product | /r/HasProperty | prepared in accordance
Facets:
value: with the invention
type: OTHER
Source sentences:
text: A set gypsum-containing product of the invention having increased resistance to permanent deformation is prepared in accordance with the invention by forming a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials chosen from: condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates, each of which comprises 2 or more phosphate units.