Method for producing alkyl cellulose

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United States of America Patent

PATENT NO 10881124
APP PUB NO 20160168271A1
SERIAL NO

14965149

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Abstract

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Provided is a method for producing an alkyl cellulose having a high viscosity and not having an excessively high gel strength. More specifically, there is provided a method for producing an alkyl cellulose comprising the steps of: mixing a cellulose pulp with a first alkali metal hydroxide solution with stirring to obtain alkali cellulose; reacting the alkali cellulose with an alkylating agent to obtain a first reaction mixture; blending a second alkali metal hydroxide solution with the first reaction mixture with stirring, without further blending of the alkylating agent, to obtain a second reaction mixture; and purifying the second reaction mixture to obtain an alkyl cellulose. There is also provided an alkyl cellulose being produced by the above method and having a degree of substitution of alkyl group of 27 to 33% by weight.

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Patent Owner(s)

  • SHIN-ETSU CHEMICAL CO., LTD.; SE TYLOSE GMBH & CO., KG

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  • 2015 Application Filing Year
  • A23L Class
  • 1664 Applications Filed
  • 880 Patents Issued To-Date
  • 52.89 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201520162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kitamura, Akira Joetsu, JP 54 156
Narita, Mitsuo Joetsu, JP 58 162
Nebel, Heiko Wiesbaden, DE 4 7
Schultz, Andreas Hanau, DE 4 14
Yamamoto, Atsushi Joetsu, JP 486 6100

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Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges10742323101 - 1011 - 2031 - 400501001502002503003504004505005506006507007508008509009501000105011001150

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