Back to results
US 8,894,812 B2Granted
Fibrillated blend of lyocell and cellulosic low DP pulp
AssigneeWeyerhaeuser NR Company
InventorsJohn A. Westland, Andrew J. Dodd, Mengkui Luo, Noriko Suzuki, S. Ananda Weerawarna
Life of this patent
Estimating the term…
Abstract
A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend.
Claims5
A method of forming a fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1795-96, and wherein at least a portion of the lyocell has a length of 3 to 12 mm comprising
- providing cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1795-96,
- providing lyocell having a length of 3 to 12 mm,
- placing the lyocell and the cellulosic pulp in an aqueous medium to provide an aqueous mixture,
- fibrillating the lyocell and the cellulosic pulp together by mixing the aqueous mixture at an energy level of 0.5 to 500 kwh per ton of lyocell and cellulosic pulp for 60 to 240 minutes.
1 more element
Dependencies are inferred from the claim text.