Polyurethane coatings have been widely used in automobile bumper clear coatdue to the low temperature curability and excellent mechanical properties. This paperdescribed the current status of various painting processes of bumper coatings worldwide， including primer，basecoat and clearcoat. Based on this，more details about low VOC coatings solutions for bumpers，including the performance of waterborne primer，waterborne basecoat and low -viscosity hardeners as cross-linker in clearcoat system was provided. Finally，the development trend of waterborne primer which could be suitable for multiple substrates andwaterborne basecoat for bumpers was prospected.
LI Jin-Qi
,
LIU Qing-Lan
. Progress in Application of Polyurethane in Automotive Bumper Coatings[J]. Paint & Coatings Industry, 2019
, 49(9)
: 61
-65
.
DOI: 10.12020/j.issn.0253-4312.2019.9.61
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