POLYMER AND COMPOSITION

摘要

The present invention relates to a polyester resin obtained by reaction in a process (I)between the following components A to E to obtain a polyester P (the polyester comprising an alkyd resin and/or a saturated polyester resin), where (A) Component A (also referred to herein as the Imide and/or Imide Component) comprises one or more cyclic imides of Formula (1); where R' represents a divalent optionally substituted saturated C1-30 organo moiety; and R represents H or a monovalent optionally substituted saturated C1-30 organo moiety; (A')Optional Component A' comprises saturated dicarboxylic acid and/or saturated hydroxyacid and that is not optional in case component A does not comprise a dicarboxylic acid or a hydroxyacid;1(B) Component B (also referred to herein as the Polyol and/or Polyol Component) comprises at least one saturated polyhydric alcohol; (C) Optional Component C (also referred to herein as the Rosin and/or Rosin Component) comprises naturally occurring rosin, the rosin comprising from 40 to 80 parts per hundred by weight of rosin of an unsaturated mono carboxylic acid comprising at least one C5-25 cyclohydrocarbo moiety capable of undergoing a Diels Alder or Ene reaction; (D) Optional Component D (also referred to herein as the Fatty Acid and/or Fatty Acid Component) comprises at least one linear C2-60 hydrocarbo carboxylic acid optionally comprising at least two linoleically unsaturated double bonds;2(E) Optional Component E (also referred to as the Other Component E) which may comprise at least one monofunctional or polyfunctional monomer other than any of Components A to D.