Smoking article wrapper having filler of hydromagnesite/magnesium hydroxide and smoking article made with said wrapper
Patent 5979461 Issued on November 9, 1999. Estimated Expiration Date: March 24, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Hydromagnesite-magnesium hydroxide compositions which, when used as fillers in smoking article wrappers, significantly reduce the amount of sidestream smoke produced by the burning smoking article while providing the smoking article with good subjective characteristics.
Other References
V.R. Choudhary et al. "Influence of Precipitation Conditions of Magnesium Hydroxide on its Thermal Decomposition in the Preparation of Active MgO" Thermochimic a Acta, 194, pp. 361-373, 1992
T. Lopez et al. "Synthesis of Magnesium Oxide bvy the Sol-Gel Method: Effect of the pH on the Surface Hydroxylation" Journal of Catalysis, 127 pp. 75-85, 1991
C. Sanchez et al. "Sol-Gel Chemistry from Metal Alkoxide Precursors" New J. Chem., 14 pp. 513-521, 1990
Menzel et al. Studien An Kohlensauren Magnesiumsalzen. I. Basische Magnesiumcarbonate. Z. Electrochem., 1930
Doelter et al. Weitere vorlaufige Mitteilungen uber Arbeiten auf dem Grenzgebietezwischen Kolloidchemie, Mineralogie und Geologie, Z. Ch. Ind. Koll., 1909
L. Walter-Levy Contribution a l'etude de la double decomposition entre les solutions de sulfate de magnesium et de carbonate de potassium, a l'bullition Seance du, 1936
L.Walter-Levy Carbonates basiques de magnesium. Acadenue Des Sciences, 1935
Milton et al. New Minerals, Reedmergnerite and Eitelite Associated With Leucosphente, Shortite, Searlesite, and Crocidolite In The Green River Formation, Utah The American Mineralogist, 1955
Berak et al. Wplyw weglanu nastopien dyspersji oraz zachowanie termiczne wytracanego wodorotlenku magnezowego Przemysl Chemiczny, 1960
Etude sur les Carbonates de Magnesie: pp. 1021-1022; 1065-1069; 1114-1118 La Papeterie, 1920
Brausser A Propos Des Proprietes De L'Eitelite Na2 Mg(CO3)2 Bulletin de la Societe Royale, 1967
Frankis et al. Subsolidus Relations in the System Na2 CO3 -CaCo3 -H2 O Nature Physical Science, 1973
McKie Subsolidus phase relations in the system K2 Ca(CO3)2 -Na2 Mg(CO3)2 at 1 kbar: The fairchilditess -buetschliite-eitelite eutectoid American Mineralogist, 1990
Deelman Low-temperature synthesis of eitelite, Na2 CO3.MgCO.sub.3 N. Jb. Miner. Mn., 1984
Pabst The Crystallography and Structure of Eitelite, Na2 Mg(CO3)2 American Mineralogist, 1973
March 24, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
