Autobody repair formulation with improved control of work time and cure time at extreme ambient air temperatures

A curable vehicle body repair Additive Package formulation to compensate for a cure temperature of a Part A that includes a polyester resin, where the additive package formulation is adapted to be kneaded into a Part A in an amount of 10-60 wt %, and then mixing with a common Part B, the additive package comprising:

• a first polyester resin having an average degree of unsaturation of between 70 and 100 molar percent based on total acid and anhydride monomer content and has a higher degree of unsaturation than the polyester resin in Part A;
• a second polyester resin reacted with a fatty acid;
• a monomer reactive diluent in which said first polyester resin and second polyester resin are dissolved or suspended;
• and
• a cure promoter selected from metal-amine complexes, tertiary amines, or a combination thereof;
• wherein said cure promoter is present in an amount of 0.5 to 3 wt % of the additive package for curing Part A at the cure temperature of between 4 and 21 degrees Celsius, or
• wherein said cure promoter is present in an amount of 0.03 to 0.5 wt % of the additive package for curing Part A at a cure temperature of between 24 and 44 degrees Celsius.