Methods for producing alkali cellulose and cellulose ether
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United States of America Patent
Stats
-
Feb 28, 2017
Grant Date -
Aug 23, 2012
app pub date -
Feb 16, 2012
filing date -
Feb 21, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
When a combination of pulps having different alkali metal hydroxide solution absorption rates is as a raw material, contact conditions such as a contact temperature and a contact time have to be changed frequently, depending on the absorption rate of pulps currently processed, thereby causing a problem of reduced productivity. For solving the problem, provided is a method for producing alkali cellulose, comprising at least the steps of: bringing two or more types of pulps having different alkali metal hydroxide solution absorption rates into contact with an alkali metal hydroxide solution to obtain a contact product; and draining the contact product, wherein the highest absorption rate is not more than 4.0 times as fast as the lowest absorption rate.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- C08B Class
- 536 Applications Filed
- 239 Patents Issued To-Date
- 44.59 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08B Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 28, 2028 |
