IPC 7 English version
C08-C08B03718

SECTION C – CHEMISTRY; METALLURGY


C 08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON (manufacture or treatment of artificial threads, fibres, bristles or ribbons D01)


C 08 BPOLYSACCHARIDES; DERIVATIVES THEREOF (polysaccharides containing less than six saccharide radicals attached to each other by glycosidic linkages C07H; fermentation or enzyme-using processes C12P 19/00; sugar industry C13; production of cellulose D21) [4]


Note

 Therapeutic activity of compounds is further classified in subclass A61P. [7]


Subclass Index

CELLULOSE AND DERIVATIVES THEREOF 

Preparatory treatment of cellulose 

C08B 1/00 

Esters 

C08B 3/00, C08B 5/00, C08B 7/00, C08B 13/00, C08B 17/00 

Ethers 

C08B 11/00, C08B 13/00, C08B 17/00 

Xanthates 

C08B 9/00 

Other derivatives 

C08B 15/00 

Regeneration of cellulose 

C08B 16/00 

STARCH; DEGRADED OR NON-CHEMICALLY MODIFIED STARCH; AMYLOSE; AMYLOPECTION 

C08B 30/00 

CHEMICAL DERIVATIVES OF STARCH, OF AMYLOSE OR OF AMYLOPECTIN 

of starch 

C08B 31/00 

of amylose 

C08B 33/00 

of amylopectin 

C08B 35/00 

OTHER POLYSACCHARIDES 

C08B 37/00 


Preparation


1/

00Preparatory treatment of cellulose for making derivatives thereof

1/

02.Rendering cellulose suitable for esterification

1/

04..for the preparation of cellulose nitrate

1/

06.Rendering cellulose suitable for etherification

1/

08.Alkali cellulose

1/

10..Apparatus for the preparation of alkali cellulose

1/

12...Steeping devices

1/

14...Ripening devices


3/

00Preparation of cellulose esters of organic acids

3/

02.Catalysts used for the esterification

3/

04.Cellulose formate

3/

06.Cellulose acetate

3/

08.of monobasic organic acids with three or more carbon atoms

3/

10..with five or more carbon atoms

3/

12.of polybasic organic acids

3/

14.in which the organic acid residue contains substituents, e.g. NH2, Cl

3/

16.Preparation of mixed organic cellulose esters

3/

18..Aceto-butyrates

3/

20.Esterification with maintenance of the fibrous structure of the cellulose (surface esterification of textiles D06M 13/00)

3/

22.Post-esterification treatments, including purification

3/

24..Hydrolysis or ripening

3/

26..Isolation of the cellulose ester

3/

28...by precipitation

3/

30..Stabilisation (by addition of stabilisers C08K)


5/

00Preparation of cellulose esters of inorganic acids

5/

02.Cellulose nitrate

5/

04..Post-esterification treatments, including purification

5/

06...Isolation of the cellulose nitrate

5/

08...Stabilisation (by addition of stabilisers C08K)

5/

10...Reducing the viscosity

5/

12...Replacing the water by organic liquids

5/

14.Cellulose sulfate


7/

00Preparation of cellulose esters of both organic and inorganic acids


9/

00Cellulose xanthate; Viscose

9/

02.Sulfidisers; Dissolvers

9/

04.Continuous processes

9/

06.Single-stage processes


11/

00Preparation 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/

00Preparation of cellulose ether-esters

13/

02.Cellulose ether xanthates


15/

00Preparation 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 C08B 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/

00Regeneration of cellulose  [2]


17/

00Apparatus 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/

00Preparation 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 A23N)  [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 C08B 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 C08B 33/00, C08B 35/00)  [4]


31/

00Preparation of chemical derivatives of starch (chemical derivatives of amylose C08B 33/00; chemical derivatives of amylopectin C08B 35/00) [2]

31/

02.Esters  [2]

31/

04..of organic acids  [2]

31/

06..of inorganic acids  [2]

31/

08.Ethers  [2]

31/

10..Alkyl or cycloalkyl ethers  [2]

31/

12..having alkyl or cycloalkyl radicals substituted by hetero atoms  [2]

31/

14..Aryl or aralkyl ethers  [2]

31/

16.Ether-esters  [2]

31/

18.Oxidised starch  [2]


33/

00Preparation of chemical derivatives of amylose  [2]

33/

02.Esters  [2]

33/

04.Ethers  [2]

33/

06.Ether-esters  [2]

33/

08.Oxidised amylose  [2]


35/

00Preparation of chemical derivatives of amylopectin  [2]

35/

02.Esters  [2]

35/

04.Ethers  [2]

35/

06.Ether-esters  [2]

35/

08.Oxidised amylopectin  [2]


37/

00Preparation of polysaccharides not provided for in groups C08B 1/00 to C08B 35/00; Derivatives thereof (cellulose D21) [4]

37/

02.Dextran; Derivatives thereof  [2]

37/

04.Alginic acid; Derivatives thereof (foodstuff preparations A23L 1/05)  [2]

37/

06.Pectin; Derivatives thereof  [2]

37/

08.Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof  [2]

37/

10.Heparin; Derivatives thereof  [2]

37/

12.Agar-agar; Derivatives thereof  [2]

37/

14.Hemicellulose; Derivatives thereof  [2]

37/

16.Cyclodextrin; Derivatives thereof  [2]

37/

18.Reserve carbohydrates, e.g. glycogen, inulin, laminarin; Derivatives thereof  [4]