Inorganic matrix composite reinforced by ionically crosslinked polymer
AssigneeInnovative Construction and Building Materials
InventorsChristopher D. Tagge, Jacob Freas Pollock, Ken Saito
Life of this patent
Estimating the term…
Abstract
An in situ ionic interaction between two additives, one a cationic strength enhancing additive and one an anionic crosslinking additive, is used to improve the mechanical properties of an article formed from a composite material. The composite has a discrete phase bound together with a film of the additives, such as gypsum crystals bound together by a film of substituted starch or cellulose ether.
Claims17
An organic-inorganic composite, comprising an inorganic phase and an organic phase, wherein the organic phase is formed of a strengthening additive of a cationic cellulose or a substituted starch ionically crosslinked by a crosslinking additive in situ, wherein the crosslinked strengthening additive forms a polymer network and the ionic interactions between the strengthening additive and the crosslinking additive substantially strengthen the organic-inorganic composite.
A cationic cellulose comprising a cellulose having one or more of the hydroxyl groups substituted by a cationic substituent, wherein the cellulose is ionically crosslinked by a crosslinking additive of an anionic cellulose ether or an anionic substituted starch.
Dependencies are inferred from the claim text.