The invention relates to thermosetting powder coating compositions comprising an unsaturated resin comprising ethylenic unsaturations and a thermal radical initiator comprising a first thermal radical initiator, wherein the first thermal radical initiator is a methyl-substituted benzoyl peroxide abbreviated herein as MBPO. The invention further relates to a process for making said thermosetting powder coating composition and processes for coating an article with said thermosetting powder coating composition. The invention further relates to a cured thermosetting powder coating composition derived upon curing of the thermosetting powder coating composition of the invention. The invention further relates to an article having coated thereon said thermosetting powder coating composition as well as to an article having coated and cured thereon said thermosetting powder coating composition. The invention further relates to the use of said thermosetting powder coating composition, to the use of an article having coated thereon said thermosetting powder coating composition and to the use of an article having coated and cured thereon said thermosetting powder coating composition. The invention further relates to cured thermosetting powder coating compositions derived upon curing of the thermosetting powder coating compositions comprising an unsaturated resin comprising ethylenic unsaturations and a first thermal radical initiator, said first thermal radical initiator being methyl-substituted benzoyl peroxide, abbreviated herein as MBPO. The invention further relates to the use of MBPO for thermosetting powder coating compositions and especially wherein the thermosetting powder coating compositions are heat-curable at low temperatures on heat-sensitive articles.
本发明涉及热固性粉末涂料组合物,该组合物包含由
乙烯基不饱和物组成的不饱和
树脂和由第一热自由基
引发剂组成的热自由基
引发剂,其中第一热自由基
引发剂为甲基取代的
过氧化苯甲酰,在此缩写为M
BPO。本发明进一步涉及制造所述热固性粉末涂料组合物的工艺,以及用所述热固性粉末涂料组合物涂覆物品的工艺。本发明进一步涉及一种固化热固性粉末涂料组合物,该组合物是在本发明的热固性粉末涂料组合物固化后得到的。本发明还涉及一种在其上涂有所述热固性粉末涂料组合物的物品,以及一种在其上涂有并固化了所述热固性粉末涂料组合物的物品。本发明还涉及所述热固性粉末涂料组合物的用途、涂有所述热固性粉末涂料组合物的物品的用途以及涂有并固化了所述热固性粉末涂料组合物的物品的用途。本发明进一步涉及固化热固性粉末涂料组合物,该固化热固性粉末涂料组合物由包含
乙烯基不饱和物的不饱和
树脂和第一热自由基
引发剂组成,所述第一热自由基
引发剂为甲基取代
过氧化苯甲酰,在此缩写为M
BPO。本发明还涉及 M
BPO 在热固性粉末涂料组合物中的应用,特别是热固性粉末涂料组合物在低温下对热敏性物品的热固化。