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Class Information
Number: 536/70
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Carbohydrates or derivatives > Cellulose or derivative > Esters > Carboxylic acid esters > Acetates > With pretreatment process
Description: Processes in which cellulose undergoes a physical or chemical treatment prior to the formation of the acetate ester.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6835828 |
Alkylene oxide modified hardwood cellulose |
Dec. 28, 2004 |
| 6683174 |
Cellulose triacetates and methods for producing the cellulose triacetates |
Jan. 27, 2004 |
| 6407224 |
Catalytic system for cellulose acylation process for producing said catalytic system, and for its practical application |
Jun. 18, 2002 |
| 6103891 |
Method for the synthesis of nucleotide or oligonucleotide phosphoramidites |
Aug. 15, 2000 |
| 6083498 |
Chemical attractants for yellowjackets and paper wasps |
Jul. 4, 2000 |
| 5990304 |
Cellulose acetate excellent in physical strength, and process for production thereof |
Nov. 23, 1999 |
| 5962677 |
Cellulose acetate with high moldability and process for production thereof |
Oct. 5, 1999 |
| 5928613 |
Apparatus for acetylating cellulose |
Jul. 27, 1999 |
| 5929229 |
Direct process for the production of cellulose esters |
Jul. 27, 1999 |
| 5914397 |
Cellulose acetate excellent in physical strength, and process for production thereof |
Jun. 22, 1999 |
| 5869646 |
Method and apparatus for acetylating cellulose |
Feb. 9, 1999 |
| 5821359 |
Acetylation of lignocellulosic fibres |
Oct. 13, 1998 |
| 5770726 |
Process for preparing a cellllose acetoacetate alkanoates |
Jun. 23, 1998 |
| 5750677 |
Direct process for the production of cellulose esters |
May. 12, 1998 |
| 5723600 |
Method for incorporating cellulose esters into cellulose by immersing cellulose in an acid-dope solution |
Mar. 3, 1998 |
| 5674999 |
Process for preparing readily dispersible water-soluble cellulosic polymers |
Oct. 7, 1997 |
| 5608050 |
Process for the manufacture of cellulose acetate |
Mar. 4, 1997 |
| 5451672 |
Process for producing cellulose acetate |
Sep. 19, 1995 |
| 5378828 |
Process for preparing soluble alkali metal salts of cellulose sulfate using chlorosulfuric acid and pyridine |
Jan. 3, 1995 |
| 5371207 |
Pressure pretreatment for improving the acetylation of cellulose |
Dec. 6, 1994 |
| 5294703 |
Process for preparing .alpha.-D-cellobiose octaacetate |
Mar. 15, 1994 |
| 5244945 |
Synthesis of plastics from recycled paper and sugar cane |
Sep. 14, 1993 |
| 5150723 |
Process for the production of tobacco smoke filters |
Sep. 29, 1992 |
| 5150721 |
Tobacco smoke filter material and process for production thereof |
Sep. 29, 1992 |
| 5141006 |
Tobacco smoke filter material and process for production thereof |
Aug. 25, 1992 |
| 5114535 |
Process for the production of cellulose acetate from wood pulp |
May. 19, 1992 |
| 5036900 |
Method for acetylating shredded cellulosic |
Aug. 6, 1991 |
| 4480090 |
Process for esterification of cellulose using as the catalyst the combination of sulfuric acid, phosphoric acid and a hindered aliphatic alcohol |
Oct. 30, 1984 |
| 4399275 |
Preparation of highly reactive cellulose |
Aug. 16, 1983 |
| 4385172 |
Prevention of hornification of dissolving pulp |
May. 24, 1983 |
| 4336370 |
Process for activating cellulose pulp to improve ease of esterification |
Jun. 22, 1982 |
| 4162359 |
Production of cellulose acetate |
Jul. 24, 1979 |
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