The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Feb. 02, 1998
Semeon Tsipursky, Lincolnwood, IL (US);
Vladimir Dolinko, Libertyville, IL (US);
Vasiliki Psihogios, Elk Grove Village, IL (US);
Gary W Beall, McHenry, IL (US);
Amcol International Corporation, Arlington Heights, IL (US);
Abstract
Intercalates formed by contacting the layer material, e.g., a phyllosilicate, with an intercalant to sorb or intercalate the between adjacent platelets of the layered material. Sufficient intercalant polymer is sorbed between adjacent platelets to expand the adjacent platelets at least about 5 .ANG. (as measured after water removal to 5% by weight water), up to about 100 .ANG. and preferably in the range of about 10-45 .ANG., so that the intercalate easily can be exfoliated into individual platelets. A monovalent, divalent and/or trivalent cation is added to the intercalating composition, or after intercalation for surprising increases in viscosity. The intercalated complex is combined with an organic liquid into an unexpectedly viscous carrier material, for delivery of the carrier material, or for delivery of an active compound, e.g., a pharmaceutical, or cosmetic, or lubricant, e.g., food grade lubricants dissolved or dispersed in the carrier material. Alternatively, the intercalated complex can be exfoliated prior to combination with the organic liquid.