Abstract: A tertiary carboxyl functional polyester resin useful for production of powder coatings is produced by reacting at least one aliphatic compound comprising two aliphatic hydroxyl groups and a tertiary carboxyl group with at least one cycloaliphatic carboxylic acid compound comprising two secondary aliphatic carboxyl groups or the anhydride thereof, wherein each hydroxyl group independently is a primary or secondary hydroxyl group, and wherein the number of hydroxy groups exceeds the number of carboxylic acid groups and anhydrides thereof. The reaction continues until essentially all the non-tertiary carboxyl groups initially present in the reaction mixture have been reacted. These polyester resins may be used together with a suitable curing agent for the production of powder coatings, or may be converted into the corresponding glycidylesters, which in combination with a suitable curing agent can be used for the production of powder coatings.

Abstract: Polymeric amines are provided that have N-substituted 2,5-pyrrolediyl groups incorporated in the backbone wherein the N-substituted 2,5-pyrrolediyl group may be represented by the general formula (I) ##STR1## wherein R independently represents a hydrogen atom or a hydrocarbyl group and wherein B represents the substituent containing at least one primary amino group.

Abstract: Linear, tertiary carboxyl functional polyester resins suitable for the production of coatings having excellent outdoor durable properties, the polyester resins obtainable by reaction ofa) at least one aromatic and/or cycloaliphatic carboxylic acid compound A comprising two aromatic- and/or secondary aliphatic carboxyl groups or the anhydride thereof,b) at least one hydroxyl compound B comprising two aliphatic hydroxyl groups, which groups each independently may be primary or secondary hydroxyl groups,c) at least one hydroxyl substituted carboxylic acid compound C comprising at least one tertiary aliphatic carboxyl group and two aliphatic hydroxyl groups, which groups each independently may be primary or secondary hydroxyl groups, andd) optionally one carboxylic acid compound D comprising one carboxyl group, the molar ratio of compounds A:B:C:D being (X+Y-1):X:Y:Z,wherein X ranges from 2 to 8, Y ranges from 2 to 8, and Z ranges from 0 to 2.

Abstract: Linear, tertiary carboxyl functional polyester resins suitable for the production of coatings having excellent outdoor durable properties, the polyester resins obtainable by reaction ofa) at least one aromatic and/or cycloaliphatic carboxylic acid compound A comprising two aromatic- and/or secondary aliphatic carboxyl groups or the anhydride thereof,b) at least one hydroxyl compound B comprising two aliphatic hydroxyl groups, which groups each independently may be primary or secondary hydroxyl groups,c) at least one hydroxyl substituted carboxylic acid compound C comprising at least one tertiary aliphatic carboxyl group and two aliphatic hydroxyl groups, which groups each independently may be primary or secondary hydroxyl groups, andd) optionally one carboxylic acid compound D comprising one carboxyl group, the molar ratio of compounds A:B:C:D being (X+Y-1):X:Y:Z,wherein X ranges from 2 to 8, Y ranges from 2 to 8, and Z ranges from 0 to 2.

Abstract: A process for the preparation of a linear tertiary aliphatic carboxyl functional polyester resin by reactinga) at least one compound A' comprising one monofunctional primary- or secondary hydroxyl group and/or at least one compound A" comprising one primary- or secondary hydroxyl group and one tertiary aliphatic carboxyl group andb) at least one aromatic or cycloaliphatic dicarboxylic acid compound B comprising two aromatic- or secondary aliphatic carboxyl groups or the anhydride thereof andc) at least one diol compound C comprising two aliphatic hydroxyl groups which may each independently be a primary or a secondary hydroxyl group andd) at least one dihydroxymonocarboxylic acid compound D comprising a tertiary aliphatic carboxyl group and two aliphatic hydroxyl groups, which may each independently be primary or secondary hydroxyl,the molar ratio of compounds A':A":B:C:D being M:N:X+Y+1:X:Y,wherein M+N=2X ranges from 2 to 8 andY ranges from 2-N to 8,at a temperature of from 100.degree. to 240.degree. C.