Synthesis and incorporation of high-temperature ammonia-release agents in lit-end cigarettes

Patent metadata

Field	Value
Publication number	US-8950409-B2
Application number	US-201213356246-A
Country	US
Kind code	B2
Filing date	Jan 23, 2012
Priority date	Oct 25, 2004
Publication date	Feb 10, 2015
Grant date	Feb 10, 2015

Abstract

A tobacco smoking mixture and/or a cigarette wrapper with high-temperature ammonia-release agents therein are provided, wherein the high-temperature ammonia-release agents are present in an amount effective to reduce the cytotoxicity of gas phase or particulate matter formed during smoking of the cigarette. The high-temperature ammonia-release agents are capable of reducing the cytotoxicity of gas phase or particulate matter by evolving ammonia at temperatures greater than about 200° C., wherein the ammonia can interact with the particulate matter. Additionally, the high-temperature ammonia-release agents can be formed by heating an aqueous mixture of an iron precursor compound, an ammonia source compound and an acid.

First claim

What is claimed is:

1. A cigarette, comprising:
a tobacco rod;
a cigarette wrapper surrounding the tobacco rod; and
at least one high-temperature ammonia-release agent, wherein the at least one high-temperature ammonia-release agent is incorporated in or on at least one of the tobacco rod and the cigarette wrapper, and wherein the at least one high-temperature ammonia-release agent is selected from the group consisting of an ammonium iron pyrophosphate, an ammonium iron pyroph…

Assignees

• Fournier Jay A
• Paine John B
• Fernandez Douglas A
• Philip Morris Usa Inc

Inventors

• Fournier Jay A
• Paine John B
• Fernandez Douglas A

Classifications

• A24B15/287 Primary

  Human Necessities · mapped topic

• A24B15/282 Primary

  Human Necessities · mapped topic

• C01B25/451

  Chemistry & Metallurgy · mapped topic

• A24D1/002

  Human Necessities · mapped topic

• A24B15/28

  Human Necessities · mapped topic