Molded bodies made from compositions having low degree of polymerization values
AssigneeWeyerhaeuser Company
InventorsMengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
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Abstract
The present invention provides molded bodies made from a treated kraft pulp, the pulp having a high hemicellulose content or at least 7% a low copper number of less than 2, and including cellulose that has a low average degree of polymerization (D.P.) that has a range of 200 to 1100.
Claims44
A molded body made from a pulp, the pulp comprising:
- a treated Kraft pulp comprising:
- (a) at least 7% by weight hemicellulose;
- (b) cellulose having an average degree of polymerization of from about 200 to about 1100;
- and
- (c) a copper number of less than about 2.0.
A molded body made from a pulp, the pulp comprising:
- a treated Kraft wood pulp comprising:
- (a) at least 7% by weight hemicellulose;
- (b) a kappa number less than 2.0;
- (c) cellulose having an average degree of polymerization of from about 200 to about 1100;
- and
- (d) said cellulose having individual D.P. values that are distributed unimodally.
A molded body made from a pulp, the pulp comprising:
- a treated Kraft pulp comprising:
- (a) at least 7% by weight hemicellulose;
- (b) cellulose having an average degree of polymerization of from about 200 to about 1100;
- (c) a kappa number less than 2.0;
- and
- (d) a copper number less than 0.7.
A molded body made from a pulp, the pulp comprising:
- a treated Kraft pulp comprising:
- (a) at least 7% by weight hemicellulose;
- (b) cellulose having an average degree of polymerization of from about 200 to about 1100;
- (c) a kappa number less than two;
- (d) an iron content less than 4 ppm;
- and
- (e) a copper content less than 1.0 ppm.
A molded body made from a pulp, the pulp comprising:
- a treated Kraft pulp comprising:
- (a) at least 7% by weight hemicellulose;
- (b) cellulose having an average degree of polymerization of less than 1100;
- and
- (c) a lignin content of about 0.1% by weight.
A molded body, comprising:
- (a) at least 5% by weight hemicellulose;
- (b) cellulose having an average degree of polymerization of from about 200 to about 1100;
- and
- (c) a kappa number of less than 2.0.
Dependencies are inferred from the claim text.