Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups [CPC: C08L61/04], [CPC: C08L61/18] and [CPC: C08L61/20]
Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups [CPC: C08L61/04], [CPC: C08L61/18] and [CPC: C08L61/20]