| 2/00 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances |
| 2/02 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Polymerisation initiated by wave energy or by particle radiation |
| 2/04 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Polymerisation by using compounds which act upon the molecular weight, e.g. chain-transferring agents |
| 2/06 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Catalysts |
| 2/08 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Polymerisation of formaldehyde |
| 2/10 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Polymerisation of cyclic oligomers of formaldehyde |
| 2/12 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Polymerisation of acetaldehyde or cyclic oligomers thereof |
| 2/14 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Polymerisation of single aldehydes not provided for in groups C08G 2/08-C08G 2/12 |
| 2/16 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Polymerisation of single ketones |
| 2/18 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Copolymerisation of aldehydes or ketones |
| 2/20 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Copolymerisation of aldehydes or ketones with other aldehydes or ketones |
| 2/22 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Copolymerisation of aldehydes or ketones with epoxy compounds |
| 2/24 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Copolymerisation of aldehydes or ketones with acetals |
| 2/26 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Copolymerisation of aldehydes or ketones with compounds containing carbon-to-carbon unsaturation |
| 2/28 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Post-polymerisation treatments |
| 2/30 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Chemical modification by after-treatment |
| 2/32 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Chemical modification by after-treatment by esterification |
| 2/34 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Chemical modification by after-treatment by etherification |
| 2/36 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Chemical modification by after-treatment by depolymerisation |
| 2/38 | Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances Block or graft polymers prepared by polymerisation of aldehydes or ketones on to macromolecular compounds |