Epoxy functional polyester resin composition, and powder coating durable outdoor curable coating composition, and durable in the open air cured

摘要

OPERATIONAL EPYXI POLI STER RESIDENCE, AND COMPOSITION OF A REPORT IN DURATION TO CURRENT FREE AIR, AND, COMPOSITION OF AN AIR REPORT FREE CURED" polyester and functional epoxy (I) resins,which are stable to storage in temperatures of up to 40,C and have a Tg of more than 40,C and are obtainable by a process, which includes the reaction of a functional epoxy polyester resin (II),obtainable by the reaction of epialoidrin, in the presence of a base, with polyester functional (III) carboxyl resins obtainable by reaction of: (a) at least one compound of aromatic or cyclaliphatic dicarboxylic acid A, comprising two aromatic or secondary aliphatic carboxylic groups or their anhydride; (b) at least one diol B compound comprising two aliphatic hydroxyl groups, which may b e independently a primary or secondary hydroxyl group; and optionally (c) a C1 compound comprising a monofunctional first or secondary hydroxyl group and/or at least one C2 compound,comprising a primary or secondary hydroxyl group and a tertiary aliphatic carboxyl group; and optionally (d) a compound of dihydroxymonocarboxylic acid D, comprising an tertiary aliphatic carboxyl group and two aliphatic hydroxyl groups, each of which may be either primary or secondary hydroxyl; and optionally (e) triidoxylcane (E1) or tetrahydroxyalcan (E2),The molar ratio of compounds A:B:C1:C2:D:E1:E2 being X + Y + Y + 1: X:M:N: Y:Q, in which M + N is in the range of 0 to 2, X is in the range of 2 to 8, and Y is in the range of 0 to 8, Z is in the range of 0 to 2 at a temperature of 100 to 220.C, until essentially all non-tertiary carboxyl groups, as originally present in the reaction mixture, have reacted, having a WPE in the range of 250 to 800, with a functional polyester polyester resin derived from the components (a) and (b) above mentioned or with a component (a) alone, in the presence of a catalyst, and durable outdoor coating compositions, who understand them.