macromonomer

https://doi.org/10.1351/goldbook.M03668
Polymer or oligomer the molecules of which each have one end-group that acts as a monomer molecule, so that each polymer or oligomer molecule contributes only a single monomer unit to a chain of the product polymer.
Notes:
  1. The @H02855@ or @C01336@ of a macromonomer yields a comb or @G02679@.
  2. Macromonomers are also sometimes referred to as macromers. The use of the term 'macromer' is strongly discouraged.
Source:
PAC, 2004, 76, 889. 'Definitions of terms relating to reactions of polymers and to functional polymeric materials (IUPAC Recommendations 2003)' on page 896 (https://doi.org/10.1351/pac200476040889)