Abstract: The invention relates to thermosetting powder coating compositions including a constituent B which constituent B consists of an epoxy crosslinker of a particular epoxy equivalent weight and a polyester resin including reacted residues of citric acid, and/or citric acid anhydride, and optionally alkyl esters of citric acid. The invention further relates to cured thermosetting powder coating compositions (powder coatings), films, coatings, and articles based on or using the invention's thermosetting powder coating compositions. The invention further relates to various processes and uses of the thermosetting powder coating compositions of the invention.

Abstract: A branched carboxylic acid functional polyester resin P is described herein along with thermosetting powder coating compositions (PCC A) comprising a binder K, the binder K comprising the polyester resin P and a crosslinker X. The invention further relates to a cured PCC A. In addition, processes for making said PCC A and processes for coating an article with said PCC A are described as well as articles having coated thereon the PCC A and an articles having coated and cured thereon the PCC A.

Abstract: A branched carboxylic acid functional polyester resin P is described herein along with thermosetting powder coating compositions (PCC A) comprising a binder K, the binder K comprising the polyester resin P and a crosslinker X. The invention further relates to a cured PCC A. In addition, processes for making said PCC A and processes for coating an article with said PCC A are described as well as articles having coated thereon the PCC A and an articles having coated and cured thereon the PCC A.

Abstract: The invention relates to a branched carboxylic acid functional polyester resin P as described herein. The invention further relates to a thermosetting powder coating composition (PCC A) comprising a binder K, said binder K comprising the P and a crosslinker X. The invention further relates to a cured PCC A. The invention further relates to a process for making said PCC A and processes for coating an article with said PCC A. The invention further relates to an article having coated thereon said PCC A as well as to an article having coated and cured thereon said PCC A. The invention further relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of the thermosetting powder coating composition A (PCC A) with a separate, distinct thermosetting powder coating composition A1 (PCC A1). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B.

Abstract: The invention relates to a branched carboxylic acid functional polyester resin P1 as described herein. The invention further relates to a thermosetting powder coating composition (PCC A1) comprising a binder K1, said binder K1 comprising the P1 and a crosslinker X1. The invention further relates to a cured PCC A1. The invention further relates to a process for making said PCC A1 and processes for coating an article with said PCC A1. The invention further relates to an article having coated thereon said PCC A1 as well as to an article having coated and cured thereon said PCC A1. The invention further relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of the thermosetting powder coating composition A1 (PCC A1) with a separate, distinct thermosetting powder coating composition A (PCC A). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B.

Abstract: The invention relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of a thermosetting powder coating composition A (PCC A) with a separate, distinct thermosetting powder coating composition A1 (PCC A1). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B. The invention further relates to a cured PCC B. The invention further relates to an article having coated thereon said thermosetting powder coating composition B as well as to an article having coated and cured thereon said thermosetting powder coating composition B. The invention further relates to use of: the PCC B, the cured PCC B, articles coated with the PCC B, articles having coated and cured thereon the PCC B. The invention further relates to the use of the PCC B for matt powder coatings.

Abstract: The invention relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of a thermosetting powder coating composition A (PCC A) with a separate, distinct thermosetting powder coating composition A1 (PCC A1). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B. The invention further relates to a cured PCC B. The invention further relates to an article having coated thereon said thermosetting powder coating composition B as well as to an article having coated and cured thereon said thermosetting powder coating composition B. The invention further relates to use of: the PCC B, the cured PCC B, articles coated with the PCC B, articles having coated and cured thereon the PCC B. The invention further relates to the use of the PCC B for matt powder coatings.

Abstract: The invention relates to a branched carboxylic acid functional polyester resin P as described herein. The invention further relates to a thermosetting powder coating composition (PCC A) comprising a binder K, said binder K comprising the P and a crosslinker X. The invention further relates to a cured PCC A. The invention further relates to a process for making said PCC A and processes for coating an article with said PCC A. The invention further relates to an article having coated thereon said PCC A as well as to an article having coated and cured thereon said PCC A. The invention further relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of the thermosetting powder coating composition A (PCC A) with a separate, distinct thermosetting powder coating composition A1 (PCC A1). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B.

Abstract: The invention relates to a branched carboxylic acid functional polyester resin P1 as described herein. The invention further relates to a thermosetting powder coating composition (PCC A1) comprising a binder K1, said binder K1 comprising the P1 and a crosslinker X1. The invention further relates to a cured PCC A1. The invention further relates to a process for making said PCC A1 and processes for coating an article with said PCC A1. The invention further relates to an article having coated thereon said PCC A1 as well as to an article having coated and cured thereon said PCC A1. The invention further relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of the thermosetting powder coating composition A1 (PCC A1) with a separate, distinct thermosetting powder coating composition A (PCC A). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B.

Abstract: Heat-curable powder coating compositions are provided which include i) at least one crystalline polyester resin present in an amount of at least 7.5 wt %; ii) at least one amorphous polyester resin present in an amount of at most 92.5 wt %; and iii) at least one peroxide present in an amount of at least 0.65 parts of peroxide in hundred parts of i)+ii) (pph), wherein the at least one crystalline polyester resin has 2-butenedioic acid ethylenic unsaturations and/or the at least one amorphous polyester resin has 2-butenedioic acid ethylenic unsaturations. The compositions may be cured to an acceptable degree at low temperature, e.g., 130° C. /20 minutes offering powder coatings that may exhibit enhanced flexibility and good adhesion. In addition, the compositions can suitably be used on heat- and/or non heat-sensitive substrates, even if the composition is highly pigmented.

Abstract: The invention relates to heat-curable powder coating composition comprising: i) at least one crystalline polyester resin present in an amount of at least 7.5 wt %; and ii) at least one amorphous polyester resin present in an amount of at most 92.5 wt %; and iii) at least one peroxide present in an amount of at least 0.