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 Title: |
US5927288:
Hydromagnesite/magnesium hydroxide fillers for smoking article wrappers and methods for making same
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bensalem, Azzedine; Brooklyn, NY
Chang, Warren; Taipei County, Taiwan
Fournier, Jay A; Richmond, VA
Kallianos, Andrew G.; Asheville, NC
Paine, III, John B.; Midlothian, VA
Podraza, Kenneth F.; Richmond, VA
Schleich, Donald M.; Carquefou, France
Seeman, Jeffrey I.; Richmond, VA
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| Assignee: |
Philip Morris Incorporated, New York, NY
other patents from PHILIP MORRIS INCORPORATED (438640) (approx. 859)
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| Published / Filed: |
1999-07-27
/ 1997-03-24
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| Application Number: |
US1997000823402
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| IPC Code: |
Advanced:
A24D 1/02;
C01F 5/22;
C01F 5/24;
Core:
A24D 1/00;
C01F 5/00;
IPC-7:
A24D 1/02;
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| ECLA Code: |
A24D1/02; C01F5/22; C01F5/24;
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| U.S. Class: |
Current:
131/365;
131/358;
423/159;
423/165;
423/430;
Original:
131/365;
131/358;
423/165;
423/159;
423/430;
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| Field of Search: |
131/365,358
423/165,159,430
162/008,139
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| Priority Number: |
| 1997-03-24 |
US1997000823402 |
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| Abstract: |
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.
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| Attorney, Agent or Firm: |
Moore, James T. ;
Schardt, James E. ;
Glenn, Charles E. B. ;
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| Primary / Asst. Examiners: |
Yu, Mickey; O'Hara, Kelly
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 38 claims |
What is claimed is:
1. A process for preparing an inorganic magnesium composition comprising the steps of:
- (A) forming a first solution containing magnesium bicarbonate;
- (B) heating the first solution to 45-550° to form a heated solution; and
- (C) adding an aqueous solution of a strong base to the heated solution and stirring the mixed solution for about 4-18 hours to form a precipitate.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
Show description
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