BIODEGRADABLE COATED SUBSTRATES

摘要

Coated substrates include a coating and a substrate is selected from the gro up consisting of paper, fabric, thread and yarn. The coating comprises a biodegradable polyhydroxyalkanoate copolymer, wherein the biodegradable polyhydroxyalkanoate copolymer comprises a first randomly repeating monomer unit having structure (I) wherein R1 is H or a C1-2 alkyl, and n is 1 or 2; and a second randomly repeating monomer unit having structure (II) wherein R 2 is a C3-19 alkyl or a C3-19 alkenyl; and wherein at least 50 % of the random ly repeating monomer units have the structure of the first randomly repeating monomer unit.