Philip Morris Inc.

Philip Morris Products Inc.

Kenneth F Podraza

John Bryant Paine, Iii

Yoram Houminer

Jeffrey I Seeman

Jay A Fournier

W Geoffrey Chan

Andrew G Kallianos

Edward B Sanders

Harvey J Grubbs

Charles R Howe

Everett W Southwick

Donald M Schleich

Azzedine Bensalem

Charles T Bridges

Warren Chang

Gordon H Bokelman

William B Edwards, Iii

John D Naworal

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.

Smoking article wrapper having filler of hydromagnesite/magnesium

Hydromagnesite-magnesium hydroxide compositions are prepared 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.

Hydromagnesite/magnesium hydroxide fillers for smoking article wrappers

An acidic aqueous medium for contacting and purifying a gas-phase stream by oxidation of a contaminant contained therein. The medium comprises an aqueous medium which contains redox-effective quantities of (1) silver(I) oxidation catalyst, (2) hydrogen peroxide oxidant, (3) silver metal-reoxidation co-catalyst ingredient which forms a cyclic complex with the hydrogen peroxide oxidant, and (4) oxidation-resistant acid. The acidic aqueous medium provides an integrated functionality of components (1) through (4) for the efficient cascade oxidation of a contaminant containing gas stream, and the continuous regeneration of the reduced silver metal catalyst back to the silver(I) oxidation state.

Liquid scrubbing of gas-phase contaminants

A main aspect of this invention is the provision of a liquid medium for scrubbing contaminants from an environmental gas-phase. Toxic chemicals such as phosphine and arsine are removed from a gas-phase stream by contacting the gas-phase stream with an aqueous medium which oxidizes the contaminants to water-soluble or water-dispersible type derivatives. The aqueous medium has a content of redox ingredients illustrated by compounds such as silver nitrate, hydrogen peroxide, sodium tungstate, and sulfuric acid.

This invention provides smoking compositions which contain a novel .beta.-hydroxycarboxylate flavorant-release additive. Under cigarette smoking conditions, a combustible filler and/or paper wrapper additive such as calcium bis(2,2-diethyl-3-hydroxy-4-phenylmethylenedecanoate) pyrolyzes and releases .alpha.-hexylcinnamaldehyde as a volatile flavorant component of the cigarette smoke.

Smoking compositions containing an .alpha.-alkylcinnamaldehyde-release

The invention relates to the use of co-crystalline magnesite/magnesium hydroxide compositions as fillers for smoking article wrappers. Smoking articles made with wrappers containing these compositions exhibit significantly reduced sidestream smoke and does not compromise subjective attributes.

Magnesite/magnesium hydroxide fillers for smoking article wrappers

This invention provides smoking compositions which contain a novel vanillin flavorant-release additive. A cigarette smoking product comprising (1) a combustible filler selected from natural tobacco, reconstituted tobacco and tobacco substitutes, and (2) a paper wrapper which has incorporated therein a flavorant-release additive corresponding to the formula: ##STR1## where R is methyl or ethyl.

Smoking compositions containing a vanillin-release additive

This invention provides smoking compositions which contain a novel vanillin flavorant-release additive. Under cigarette smoking conditions, a combustible filler and/or paper wrapper additive such as ethyl 3-(4'-butoxycarbonyloxy-3'-methoxyphenyl)-3-hydroxy-2-phenylpropanoate pyrolyzes into vanillin and ethyl phenylacetate flavorants as volatile components of the cigarette smoke. A present invention flavorant-release additive is represented by the formula: ##STR1## where R is methyl or ethyl; R.sup.1 is hydrogen or a C.sub.1 -C.sub.4 alkyl substituent; R.sup.2 is hydrogen or a C.sub.1 -C.sub.4 alkyl or C.sub.6 -C.sub.10 aromatic substituent; and R.sup.3 is a C.sub.1 -C.sub.4 alkyl or C.sub.6 -C.sub.10 aromatic substituent.

This invention provides a process for the production of novel smoking compositions which contain a benzofuranone flavorant additive, and further provides novel benzofuranone compounds as illustrated by the cis 6-phenyl-3a, 4,5,7a-tetrahydro-2(3H)-benzofuranone: ##STR1## Under normal cigarette smoking conditions, the benzofuranone additive in an invention smoking composition enhances the flavor and aroma of the mainstream and sidestream smoke.

Benzofuranone compounds, and production of smoking compositions

This invention provides novel .beta.-hydroxyesters which have utility as a flavorant-release additive in smoking compositions. Under cigarette smoking conditions, a combustible filler and/or paper wrapper additive such as ethyl 3-hydroxy-3-(4'-hydroxy-3'-methoxyphenyl)-2-phenylpropanoate pyrolyzes into vanillin and ethyl phenylacetate flavorants as volatile components of the cigarette smoke.

Beta-hydroxyesters for use as vanillin-release additives in smoking

This invention provides novel vanillyl 5-hydroxyesters, and smoking compositions which contain a vanillyl 5-hydroxyester as a flavorant-release additive. Under cigarette smoking conditions, a combustible filler and/or paper wrapper additive such as 4'-formyl-2'-methoxyphenyl 5-hydroxy-2-isopropylhexanoate pyrolyzes into vanillin and 2-isopropyl-5-hydroxyhexanoic acid delta lactone flavorants as volatile components of the cigarette smoke.

Vanillin 5-hydroxyesters and smoking compositions containing a

This invention provides smoking compositions which contains a 6-substituted hexahydrobenzofuranone flavorant additive. Under cigarette smoking conditions the flavorant additive enhances the aroma and flavor of the cigarette smoke.

Smoking compositions containing a hexahydrobenzofuranone flavorant

An improved smoking article wrapper which significantly reduces sidestream smike using magnesium carbonate in the form of magnesite as a filler. Smoking articles which employ the wrappers exhibit a significant reduction in sidestream smoke without adverse effect on subjective characteristics.

Magnesite composition filler for smoking article wrapper

This invention provides novel heterocyclic ester compounds. This invention further provides smoking compositions which contain an invention heterocyclic ester as a flavorant-release additive, as illustrated by the following structure: ##STR1## Under normal cigarette smoking conditions, tetramethylpyrazine and an olefin are released as pyrolysis products, and they enhance the flavor and aroma of the mainstream and sidestream smoke.

Heterocyclic esters and smoking compositions containing a heterocyclic

This invention provides smoking compositions which contain a novel hydroxylactone flavorant-release additive. Under cigarette smoking conditions, an additive such as 2-(1-hydroxy-1-phenylmethyl)-.gamma.-butyrolactone pyrolyzes into volatile benzaldehyde and .gamma.-butyrolactone constituents which enhance the flavor and aroma of the cigarette smoke.

Growing community of inventors

Richmond, VA, United States of America

Kenneth F Podraza