INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR; MOULDS,; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain; not provided for in groups B29K2661/00 - B29K2677/00; , for preformed parts, e.g. for inserts
