Water resistant vermiculite articles and method of their manufacture
AssigneeW. R. Grace & Co.-Conn.
InventorsChia-Chih Ou, Deborah Neumayer
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Abstract
A method of rendering water resistant a vermiculite article such as a film or coating comprised of delaminated vermiculite lamellae is provided comprising the step of contacting the article with a solution of an inorganic monovalent cation selected from the group consisting of: H.sup.+, Na.sup.+, K.sup.+, Cs.sup.+, Rb.sup.+ and Fr.sup.+ and mixtures thereof. The invention further relates to a water resistant article such as a film or coating comprised of delaminated vermiculite lamellae, which article is produced by contacting the article with a solution of an inorganic monovalent cation selected from the group consisting of: H.sup.+, Na.sup.+, K.sup.+, Cs.sup.+, Rb.sup.+ and Fr.sup.+.
Claims21
A method of rendering water resistant a vermiculite article comprised of delaminated vermiculate lamellae, said article being prepared from an aqueous dispersion of said lamellae, said method comprising the step of contacting the article with a solution of an inorganic monovalent cation selected from the group consisting of:
- H.sup.+, Na.sup.+, K.sup.+, Cs.sup.+, Rb.sup.+ and Fr.sup.+, and mixtures thereof.
A water resistant vermiculite article comprised of delaminated vermiculite lamellae, said article being prepared from an aqueous dispersion of said lamellae and being rendered water resistant by contacting the article with a solution of an inorganic monovalent cation selected from the group consisting of:
- H.sup.+, Na.sup.+, K.sup.+, Cs.sup.+, Rb.sup.+ and Fr.sup.+ and mixtures thereof.
Dependencies are inferred from the claim text.