Raw cotton linters composition, method of making, and uses thereof
AssigneeHercules Incorporated
InventorsPaul Gillette, Thomas Majewicz, Arjun Sau
Life of this patent
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Abstract
A composition of a loose mass of comminuted raw cotton linter fibers has a bulk density of at least 8 g/100 ml and at least 50% of the fibers in the mass passes through a US standard sieve size #10 (2 mm opening). This composition is made by obtaining a loose mass of first cut, second cut, third cut, or mill runs raw cotton linters or mixtures thereof and comminuting the loose mass of raw cotton linters to a size wherein at least 50% pass through a US standard sieve size #10 (2 mm opening). This composition is used to make cellulose ether derivatives.
Claims96
A composition comprising a loose mass of comminuted raw cotton linter fibers that
- a) has a bulk density of at least 8 g/100 ml and
- b) at least 50 wt % of the fibers in the loose mass passes through a US standard sieve size #10 (2 mm opening).
The process of 51, wherein the cellulose ehter derivative is methylcellulose (MC) that has a DS of 0.1 to 2.5.
The process of claim 95 wherein the hydroxypropyl molar substitution (MS) of the MHPC is 0.1 to 6.
Dependencies are inferred from the claim text.