Antistatic additive for organic polymer compositions
AssigneesCellular Technology International, Inc., Chemfoam International, Inc.
InventorDennis R. Spicher
Life of this patent
Estimating the term…
Abstract
An antistatic additive including a hexahalogenated ionic compound, and an antistatic additive composition for organic polymer compositions including an antistatically-effective amount of the hexahalogenated ionic compound, a solvent for the hexahalogenated ionic compound, and a diluent compatible with the hexahalogenated ionic compound, the solvent and the organic polymer composition. The hexahalogenated phosphate compound is preferably either potassium hexafluorophosphate, sodium hexafluorophosphate, and ammonium hexafluorophosphate. Organic polymer compositions containing the additive also are disclosed, as are methods of manufacturing both the additive and the polymer compositions.
Claims21
An organic polymer composition stabilized against static comprising:
- polyurethane;
- and
- an antistatically-effective amount of a hexahalogenated ionic compound of the form AMX.sub.6, where A is inorganic, and is a salt-forming cation or a salt-forming alkali metal;
- M is an element, or a compound containing an element, the element being selected from Group V of the periodic table;
- and X is a halogen;
- where, when A is Na or K, M is not Sb, and X is not Br.
An organic polymer composition stabilized against static comprising:
- polyurethane;
- and
- about 0.5% to about 10% by weight of a hexahalogenated ionic compound of the form AMX.sub.6, where A is a salt-forming cation or a salt-forming alkali metal;
- M is an element, or a compound containing an element, the element being selected from Group V of the periodic table;
- and X is a halogen, and where when A is Na or K, M is not Sb and X is not Br.
An organic polymer composition stabilized against static comprising:
- a foamed polyurethane;
- and
- an antistatically-effective amount of a hexahalogenated ionic compound selected from the group consisting of ammonium, lithium, sodium, potassium, rubidium, and cesium salts of hexafluoro-, hexachloro-, hexabromo-, hexaiodo-, and hexaastatodo-nitrate, phosphate, arsenate, antimonate, and bismuthate.
An organic polymer composition stabilized against static comprising:
- a solid, non-powder polyurethane;
- and
- an antistatically-effective amount of a hexahalogenated ionic compound of the form AMX.sub.6, where A is inorganic, and is a salt-forming cation or a salt-forming alkali metal;
- M is an element, or a compound containing an element, selected from Group V of the periodic table, where M is not As or Sb, and where, when M is P, A is not NH.sub.4 ;
- and X is a halogen.
A method of imparting antistatic properties to a foamed polyurethane composition that comprises the steps of:
- adding an antistatically effective amount of an inorganic hexahalogenated ionic compound to a polyurethane formulation;
- and
- foaming the polyurethane formulation to produce the foamed polyurethane composition.
A method of imparting antistatic properties to a polyurethane composition, the method comprising the step of adding to the polyurethane composition an antistatically effective amount of an inorganic hexahalogenated ionic compound of the form AMX.sub.6, where A is a salt-forming cation or a salt-forming alkali metal;
- M is an element, or a compound containing an element, the element being selected from Group V of the periodic table;
- and X is a halogen;
- where, when A is Na or K, M is not Sb, and X is not Br.
Dependencies are inferred from the claim text.