Apparatus in general for separation processes using semi-permeable membranes [5]
63
/
02
•
Hollow fibre modules [5]
63
/
04
•
•
comprising multiple hollow fibre assemblies [5]
63
/
06
•
Tubular membrane modules [5]
63
/
08
•
Flat membrane modules [5]
63
/
10
•
Spiral-wound membrane modules [5]
63
/
12
•
•
comprising multiple spiral-wound assemblies [5]
63
/
14
•
Pleat-type membrane modules [5]
63
/
16
•
Rotary, reciprocated or vibrated modules [5]
65
/
00
Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes [5]
65
/
02
•
Membrane cleaning or sterilisation [5]
65
/
04
•
•
with movable bodies, e.g. foam balls [5]
65
/
06
•
•
with special washing compositions [5]
65
/
08
•
Prevention of membrane fouling or of concentration polarisation [5]
65
/
10
•
Testing of membranes or membrane apparatus; Detecting or repairing leaks [5]
67
/
00
Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus [5]
69
/
00
Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor [5]
Notes
(1)
In this group, the following term is used with the meaning indicated:
-
"properties" covers those of a mechanical, physical or chemical nature. [5]
(2)
Manufacturing processes, if considered of interest, are also classified in group B 01 D 67/00. [5]
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor [5]
Notes
(1)
In this group, if the material is a composition it is classified according to the constituent present in highest proportion. This constituent is classified according to the last place rule (see Note before group B 01 D 61/00). If there is more than one constituent present in equal highest proportions, then each of these constituents is classified according to the last place rule. [5]
(2)
Manufacturing processes, if considered of interest, are also classified in group B 01 D 67/00. [5]
71
/
02
•
Inorganic material [5]
71
/
04
•
•
Glass [5]
71
/
06
•
Organic material [5]
71
/
08
•
•
Polysaccharides [5]
71
/
10
•
•
•
Cellulose; Modified cellulose [5]
71
/
12
•
•
•
Cellulose derivatives [5]
71
/
14
•
•
•
•
Esters of organic acids [5]
71
/
16
•
•
•
•
•
Cellulose acetate [5]
71
/
18
•
•
•
•
•
Mixed esters, e.g. cellulose acetate-butyrate [5]
71
/
20
•
•
•
•
Esters of inorganic acids, e.g. cellulose nitrate [5]
71
/
22
•
•
•
•
Cellulose ethers [5]
71
/
24
•
•
Rubbers [5]
Note
In this group the following term is used with the meaning indicated:
-
"rubber" covers:
(a)
natural or conjugated diene rubber;
(b)
rubber in general (for specific rubber, see the group provided for such macromolecular compound). [5]
Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters [5]
71
/
42
•
•
•
Polymers of nitriles, e.g. polyacrylonitrile [5]
71
/
44
•
•
Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B 01 D 71/26 to B 01 D 71/42 [5]
71
/
46
•
•
Epoxy resins [5]
71
/
48
•
•
Polyesters [5]
71
/
50
•
•
Polycarbonates [5]
71
/
52
•
•
Polyethers [5]
71
/
54
•
•
Polyureas; Polyurethanes [5]
71
/
56
•
•
Polyamides, e.g. polyester-amides [5]
71
/
58
•
•
Other polymers having nitrogen in the main chain, with or without oxygen or carbon only [5]
71
/
60
•
•
•
Polyamines [5]
71
/
62
•
•
•
Polycondensates having nitrogen-containing heterocyclic rings in the main chain [5]
71
/
64
•
•
•
•
Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors [5]
71
/
66
•
•
Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only [5]
71
/
68
•
•
•
Polysulfones; Polyethersulfones [5]
71
/
70
•
•
Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only [5]
71
/
72
•
•
Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B 01 D 71/46 to B 01 D 71/70 [5]
71
/
74
•
•
Natural macromolecular material or derivatives thereof (B 01 D 71/08, B 01 D 71/24 take precedence) [5]
71
/
76
•
•
Macromolecular material not specifically provided for in a single one of groups B 01 D 71/08 to B 01 D 71/74 (rubbers in general B 01 D 71/24) [5]
71
/
78
•
•
•
Graft polymers [5]
71
/
80
•
•
•
Block polymers [5]
71
/
82
•
•
•
characterised by the presence of specified groups, e.g. introduced by chemical after-treatment [5]
Indexing scheme associated with group B 01 D 24/00. The indexing codes should be unlinked. [5]
Note
Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]
