Unsaturated polyester composition for autobody repair with improved adhesion to metal substrates
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United States of America Patent
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Jun 4, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jun 30, 2017
filing date -
Jul 13, 2016
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Abstract
A vehicle body repair formulation is provided that includes a polyester resin having a degree of unsaturation of between 25 and 100 molecule percent based on total acid and anhydride content. The polyester resin is dissolved or suspended in a monomer reactive diluent. Microspheroids are provided to enhance the sandability of a cured formulation. An initiator package is also provided. The reactive diluent/monomer can be chosen to be non-stryrenic to improve performance properties. A process for repairing a vehicle body is provided using ambient conditions alone or in combination with thermal source to aid in cure after applied to the vehicle body in need of repair.
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