double-strand copolymer

https://doi.org/10.1351/goldbook.D01850
A copolymer the macromolecules of which are double-strand macromolecules.
Source:
PAC, 1996, 68, 2287. 'Glossary of basic terms in polymer science (IUPAC Recommendations 1996)' on page 2304 (https://doi.org/10.1351/pac199668122287)