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US 12,392,086 B2Granted
Treated Kraft pulp compositions and methods of making the same
AssigneeInternational Paper Company
InventorsMengkui Luo, Venketa Panganathan Parthasarathy
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Abstract
Compositions including treated Kraft pulp, useful for making rayon fibers, having a lower degree of polymerization, a high R18, a low hemicellulose content, and high reactivity, are described. Methods of making the compositions are also described.
Claims23
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.
3 more elements
Dependencies are inferred from the claim text.