Grafted cyclodextrin
AssigneeCellresin Technologies, LLC
InventorsWillard E. Wood, Neil J. Beaverson, Kasyap V. Seethamraju
Life of this patent
Estimating the term…
Abstract
Thermoplastic polymer compositions, films, continues, closures, laminates can comprise a modified vinyl polymer said modified polymer having a moiety comprising a cyclodextrin compound. The cyclodextrin compound, locked into the polymer structure, can absorb impurities, permeants, or other undesirable volatile materials. The cooperation between the cyclodextrin grafted onto the thermoplastic polymer and the polymer structure can provide barrier properties to a film, web or other polymer structure. A permeant or a contaminant can be complexed or trapped within the polymer and held within the film or Web preventing the permeant or contaminant from passing into the interior of a container or enclosure.
Claims110
A thermoplastic polymer composition, comprising a blend of a polyolefin resin and a chemically-modified polyolefin resin, the modified polyolefin resin comprising a polymethylene backbone comprising randomly substituted covalently bonded groups comprising a cyclodextrin compound;
- wherein the cyclodextrin compound is substantially free of a compound in the central pore of the cyclodextrin ring.
A chip comprising a shaped polyolefin resin particulate with a major dimension of less than about 10 millimeters and a weight of about 20 to 50 milligrams, the chip comprising a blend of a polyolefin resin and a modified polyolefin resin, the modified polyolefin resin comprising a polymethylene backbone having randomly substituted covalently bonded groups derived from a cyclodextrin compound, the chip comprising about 100 parts by weight of the polyolefin resin and about 0.01 to 10 parts by weight of the modified polyolefin;
- wherein the cyclodextrin compound is substantially free of a compound in the central pore of the cyclodextrin ring.
A container comprising an enclosed volume surrounded by a polyolefin web, the web comprising a blend of a polyolefin resin and a modified polyolefin resin, the modified polyolefin resin comprising a polymethylene backbone having randomly substituted covalently bonded groups derived from a cyclodextrin compound, the chip comprising about 100 parts by weight of the polyolefin resin and about 0.01 to 10 parts by weight of the modified polyolefin;
- wherein the cyclodextrin compound is substantially free of a compound in the central pore of the cyclodextrin ring.
A film comprising a blend of a polyolefin resin and a modified polyolefin resin, the modified polyolefin resin comprising a polymethylene backbone having randomly substituted groups derived from a cyclodextrin compound, the film comprising about 100 parts by weight of the polyolefin resin and about 0.01 to 10 parts by weight of the modified polyolefin;
- wherein the cyclodextrin compound is substantially free of a compound in the central pore of the cyclodextrin ring.
A thermoplastic polymer composition comprising a blend of a polyolefin resin and a modified polyolefin resin, the modified polyolefin resin comprising a cyclodextrin bonded to a backbone carbon of the polymer through a maleic acid residue or to a carbon in a pendent group through a maleic acid residue;
- wherein the cyclodextrin compound is substantially free of a compound in the central pore of the cyclodextrin ring.
A thermoplastic polymer chip comprising a shaped polyolefin resin particulate with a major dimension of less than about 10 millimeters and a weight of about 15 to 50 milligrams, the chip comprising a blend of a polyolefin resin and a modified polyolefin resin, the modified polyolefin resin comprising a cyclodextrin bonded to a backbone carbon of the polymer through a maleic acid residue or to a carbon in a pendent group through a maleic acid residue;
- wherein the cyclodextrin compound is substantially free of a compound in the central pore of the cyclodextrin ring.
A thermoplastic polymer composition, comprising a modified polyolefin resin comprising a polymethylene backbone comprising randomly substituted covalently bonded groups comprising a cyclodextrin compound;
- wherein the cyclodextrin compound is substantially free of a compound in the central pore of the cyclodextrin ring.
Dependencies are inferred from the claim text.