… blown, polymerised by heat in vacuum or in inert gas or otherwise chemically modified, excluding those of …
Explanatory notes
… blown, polymerised by heat in vacuum or in inert gas or otherwise chemically modified, excluding those of … blown, polymerised by heat in vacuum or in inert gas or otherwise chemically modified, excluding those of … . (5) Oils polymerised by heat in vacuum or in inert gas are certain oils (particularly linseed oil and tung oil) …