US 12,392,086 B2
Treated Kraft pulp compositions and methods of making the same
Mengkui Luo, Auburn, WA (US); and Venketa Panganathan Parthasarathy, Pooler, GA (US)
Assigned to INTERNATIONAL PAPER COMPANY, Memphis, TN (US)
Filed by Mengkui Luo, Auburn, WA (US); and Venketa Panganathan Parthasarathy, Pooler, GA (US)
Filed on May 16, 2022, as Appl. No. 17/663,448.
Application 17/663,448 is a continuation of application No. 16/236,093, filed on Dec. 28, 2018, granted, now 11,332,883.
Application 16/236,093 is a continuation of application No. 14/145,535, filed on Dec. 31, 2013, abandoned.
Prior Publication US 2023/0366150 A1, Nov. 16, 2023
Int. Cl. D21C 9/14 (2006.01); D21C 9/10 (2006.01); D21H 11/04 (2006.01); D21H 11/16 (2006.01); D21H 13/08 (2006.01); D21H 21/08 (2006.01)
CPC D21H 11/16 (2013.01) [D21C 9/1026 (2013.01); D21C 9/144 (2013.01); D21H 11/04 (2013.01); D21H 13/08 (2013.01); D21H 21/08 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A treated Kraft pulp, comprising:
a hemicellulose content of 5% or more; a R18 value of 88% or more; and a gamma number of 50% or less;
wherein the treated Kraft pulp has less than 8% by weight of cellulose II as determined by x-ray crystallography; and
wherein the treated Kraft pulp is treated chemical wood pulp.
 
19. A pulp blend comprising:
a treated Kraft pulp according to claim 1;
a dissolving pulp having a R18 of greater than 92%; and
a total xylan and mannan content of 6% or more;
wherein the blend comprises at least 20% by weight of the treated pulp.