(0)C08B:1/2:
IPC6
SECTION C - CHEMISTRY; METALLURGY
POLYSACCHARIDES; DERIVATIVES THEREOF
C08B
2/3
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C08B007/00 - C08B030/20
7
/
00
Preparation of cellulose esters of both organic and inorganic acids
9
/
00
Cellulose xanthate; Viscose
9
/
02
•
Sulfidisers; Dissolvers
9
/
04
•
Continuous processes
9
/
06
•
Single-stage processes
11
/
00
Preparation of cellulose ethers
11
/
02
•
Alkyl or cycloalkyl ethers
11
/
04
•
•
with substituted hydrocarbon radicals
11
/
06
•
•
•
with halogen-substituted hydrocarbon radicals
11
/
08
•
•
•
with hydroxylated hydrocarbon radicals; Esters, ethers, or acetals thereof
11
/
10
•
•
•
substituted with acid radicals
11
/
12
•
•
•
•
substituted with carboxylic radicals
11
/
14
•
•
•
with nitrogen-containing groups
11
/
145
•
•
•
•
with basic nitrogen, e.g. aminoalkyl ethers [2]
11
/
15
•
•
•
•
with carbamoyl groups [2]
11
/
155
•
•
•
•
with cyano groups, e.g. cyanoalkyl ethers [2]
11
/
16
•
Aryl or aralkyl ethers
11
/
18
•
•
with substituted hydrocarbon radicals
11
/
187
•
with olefinic unsaturated groups [2]
11
/
193
•
Mixed ethers, i.e. ethers with two or more different etherifying groups [2]
11
/
20
•
Post-etherification treatments, including purification
11
/
22
•
•
Isolation
13
/
00
Preparation of cellulose ether-esters
13
/
02
•
Cellulose ether xanthates
15
/
00
Preparation of other cellulose derivatives or modified cellulose
15
/
02
•
Oxycellulose; Hydrocellulose; Cellulose hydrate
15
/
04
•
•
Carboxycellulose, e.g. prepared by oxidation with nitrogen dioxide
15
/
05
•
Derivatives containing elements other than carbon, hydrogen, oxygen, halogen, or sulfur (esters of phosphorus acids
C 08 B 5/00
) [2]
15
/
06
•
•
containing nitrogen [2]
15
/
08
•
Fractionation of cellulose, e.g. separation of cellulose crystallites [2]
15
/
10
•
Crosslinking of cellulose [2]
16
/
00
Regeneration of cellulose [2]
17
/
00
Apparatus for esterification or etherification of cellulose
17
/
02
•
for making organic esters of cellulose
17
/
04
•
for making cellulose nitrate
17
/
06
•
for making cellulose ethers
30
/
00
Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin [4]
30
/
02
•
Preparatory treatment, e.g. crushing of raw materials (machines for preliminary washing
A 23 N
) [4]
30
/
04
•
Extraction or purification [4]
30
/
06
•
Drying; Forming [4]
30
/
08
•
Concentration of starch suspensions [4]
30
/
10
•
Working-up residues from the starch extraction, including pressing water from the starch-extracted material [4]
30
/
12
•
Degraded or non-chemically modified starch; Bleaching of starch (preparation of chemical derivatives of starch
C 08 B 31/00
) [4]
30
/
14
•
•
Cold water dispersible or pregelatinised starch [4]
30
/
16
•
•
Apparatus therefor [4]
30
/
18
•
•
Dextrin [4]
30
/
20
•
Amylose or amylopectin (chemical derivatives thereof
C 08 B 33/00
,
C 08 B 35/00
) [4]
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