DR. PAUL N. GREGORY, D.D.S., M.H.A.
Dentist in Memphis, TN

6686464, Feb 3, 2004

Nov 1, 2000

09/704258

Roger Bruce Harding - Memphis TN
Susan L. H. Crenshaw - Memphis TN
Paul Eugene Gregory - Germantown TN
Denise Hartnett Broughton - Cordova TN

BKI Holding Corporation - Wilmington DE

C08B 1100

536 84, 536 97, 536 98

The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cellulose (CMC) produced from mercerized and recovered cellulose pulp is significantly greater than that produced from non-mercerized cellulose pulp. The present invention provides a method of preparing cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers. The mercerized cellulose pulp is typically substantially free of cellulose III. Mercerized cellulose pulp prepared by this method has a greater percentage of crystalline cellulose II and a smaller crystalline area than that of non-mercerized cellulose pulp. The present invention also provides a method of preparing a cellulose floc comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) treating the mercerized pulp to form the cellulose floc.

2005025, Nov 10, 2005

Jul 18, 2005

11/184157

Roger Harding - Memphis TN, US
Susan Crenshaw - Memphis TN, US
Paul Gregory - Germantown TN, US
Denise Broughton - Lakeland TN, US

BKI Holding Corporation - Wilmington

C08B011/193

536091000

The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cellulose (CMC) produced from mercerized and recovered cellulose pulp is significanitly greater than that produced from non-mercerized cellulose pulp. The present invention provides a method of preparing, cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers. According to one embodiment, the cellulose pulp is southern softwood kraft and the mercerized cellulose pulp has a TAPPI 230 om-89 viscosity of at most 12 cP. This method, however, may be applied to all cellulose pulps, regardless of their viscosities, including those which, when mercerized, have a viscosity greater than 12 cP. The mercerized cellulose pulp is typically substantially free of cellulose III. Mercerized cellulose pulp prepared by this method has a greater percentage of crystalline cellulose II and a smaller crystalline area than that of non-mercerized cellulose pulp. The present invention also provides a method of preparing a cellulose floc comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) treating the mercerized pulp to form the cellulose floc. Alternatively, the method comprises mercerizing and recovering a cellulose floc. Cellulose floc prepared by this method have a greater bulk density than cellulose floc prepared from similar non-mercerized cellulose pulp. Furthermore, the bulk density gain is greater than that expected from the coarseness (weight per unit of fiber length) gain from preparing a cellulose floc.

7022837, Apr 4, 2006

Oct 31, 2001

10/002399

Roger Bruce Harding - Memphis TN, US
Susan L. H. Crenshaw - Memphis TN, US
Paul Eugene Gregory - Germantown TN, US
Denise Hartnett Broughton - Lakeland TN, US

BKI Holding Corporation - Wilmington DE

C08B 11/08

536 84, 536 85, 536 86, 536 87, 536 88, 536 58, 536 76, 536124, 162 65

The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cellulose (CMC) produced from mercerized and recovered cellulose pulp is significantly greater than that produced from non-mercerized cellulose pulp. The present invention provides a method of preparing cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers. According to one embodiment, the cellulose pulp is southern softwood kraft and the mercerized cellulose pulp has a TAPPI 230 om-89 viscosity of at most 12 cP. This method, however, may be applied to all cellulose pulps, regardless of their viscosities, including those which, when mercerized, have a viscosity greater than 12 cP. The mercerized cellulose pulp is typically substantially free of cellulose III.

2004015, Aug 12, 2004

Nov 24, 2003

10/722923

Roger Harding - Memphis TN, US
Susan Crenshaw - Memphis TN, US
Paul Gregory - Germantown TN, US
Denise Broughton - Cordova TN, US

BKI Holding Corporation - Wilmington DE

C08B011/20

536/086000

The present inventors have discovered that the solution rheology of cellulose ethers prepared from cellulose pulp is altered by mercerizing and recovering cellulose pulp before preparing the cellulose ethers. For example, the solution viscosity of carboxymethyl cellulose (CMC) produced from mercerized and recovered cellulose pulp is significantly greater than that produced from non-mercerized cellulose pulp. The present invention provides a method of preparing cellulose ethers comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) converting the mercerized and recovered cellulose pulp into the cellulose ethers. The mercerized cellulose pulp is typically substantially free of cellulose III. Mercerized cellulose pulp prepared by this method has a greater percentage of crystalline cellulose II and a smaller crystalline area than that of non-mercerized cellulose pulp. The present invention also provides a method of preparing a cellulose floc comprising the steps of (a) obtaining mercerized and recovered cellulose pulp, and (b) treating the mercerized pulp to form the cellulose floc. Alternatively, the method comprises mercerizing and recovering a cellulose floc. Cellulose floc prepared by this method have a greater bulk density than cellulose floc prepared from similar non-mercerized cellulose pulp. Furthermore, the bulk density gain is greater than that expected from the coarseness (weight per unit of fiber length) gain from preparing a cellulose floc.

4952278, Aug 28, 1990

Jun 2, 1989

7/360649

Paul E. Gregory - Germantown TN
Kenneth D. Vinson - Germantown TN

The Procter & Gamble Cellulose Company - Memphis TN

D21H 1767, D21H 1118

162141

A paper structure having both high opacity and improved tensile strength through the incorporation of expanded fiber and an opacifying mineral pigment, such as titanium dioxide, is disclosed. The addition of expanded fiber to the paper structure makes it possible to increase the opacity of the paper through the use of the conventional mineral pigments without adversely affecting the paper's tensile strength. These opacified paper structures are especially useful for producing high quality, strong, light weight printing and writing papers which require material pigments for enhanced opacity.

4517714, May 21, 1985

Jul 23, 1982

6/401169

Scott W. Sneed - Memphis TN
Bill R. Schwam - Memphis TN
Paul E. Gregory - Germantown TN

The Procter & Gamble Company - Cincinnati OH

D04H 310

28103

A process for making a nonwoven fabric barrier layer that comprises simultaneously ring-rolling to a desired basis weight at least two adjacent plies of hydrophobic microfine fiber webs. The adjacent plies prior to ring-rolling have a cumulative basis weight of from about 1. 1 to about 4 times the desired basis weight.