US 5,847,057 AGranted

Heat-curable coating compounds

AssigneeEMS-Inventa AG

InventorsAndreas Kaplan, Manfred Wenzler

Life of this patent

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Abstract

The invention relates to heat-curable coating compounds containing a carboxyl-functional polyester produced by a condensation reaction from aliphatic and/or cycloaliphatic and/or aromatic polycarboxylic acids and anhydrides, a .beta.-hydroxyalkylamide and special stabilizers.

Claims25

Dependent claims

A heat-curable coating compound, comprising:

(A) A carboxyl-functional polyester, produced by a condensation reaction from one or more compounds selected from the group consisting of aliphatic and cycloaliphatic polyols with one or more compounds selected from the group consisting of aliphatic, cycloaliphatic and aromatic polycarboxylic acids, the polyester having a Tg between 30.degree. C. and 80.degree. C. and an acid value between 20 and 100 (mg KOH/g);
(B) a .beta.-hydroxyalkylamide, a ratio of .beta.-hydroxyalkylamide equivalents to carboxylic acid equivalents lying between 0.6 and 1.6:1;
and
(C) at least one compound of the following general formulas (I)-(X) or their mixtures:
##STR7## I:
with R.sub.1 .dbd.OH, R.sub.2 .dbd.OR.sub.7, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 .dbd.identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
II:
with R.sub.1 .dbd.OH, R.sub.4 .dbd.OR.sub.7, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms ##STR8## III:
with R.sub.1 .dbd.OH, R.sub.2 .dbd.OR.sub.9, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
IV:
with R.sub.1 .dbd.OH, R.sub.4 .dbd.OR.sub.9, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
V:
with R.sub.1 .dbd.OH, R.sub.8 .dbd.OR.sub.9, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
VI:
with R.sub.2 .dbd.OH, R.sub.6 .dbd.OR.sub.9, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.7, R.sub.8, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms ##STR9## VII:
with R.sub.1 .dbd.OH, R.sub.4 .dbd.OR.sub.11, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 .dbd.identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
VIII:
with R.sub.2 .dbd.OH, R.sub.6 .dbd.OR.sub.11, R.sub.1, R.sub.3, R.sub.4, R.sub.5, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
IX:
with R.sub.9 .dbd.OH, R.sub.10 .dbd.OR.sub.11, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.11 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms ##STR10## X:
with R.sub.9 .dbd.OH, R.sub.10 .dbd.OR.sub.11, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.11 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms

18 more elements

A powder coating, comprising:

(A) a carboxyl-functional polyester, produced by a condensation reaction from one or more compounds selected from the group consisting of aliphatic and cycloaliphatic polyols with one or more compounds selected from the group consisting of aliphatic, cycloaliphatic and aromatic polycarboxylic acids, the polyester having a Tg between 30.degree. C. and 80.degree. C. and an acid value between 20 and 100 (mg KOH/g);
(B) a .beta.-hydroxyalkylamide, a ratio of .beta.-hydroxy-alkylamide equivalents to carboxylic acid equivalents lying between 0.6 and 1.6:1;
(C) at least one additive;
and
(D) at least one compound of the following general formulas (I)-(X) or their mixtures:
##STR17## I:
with R.sub.1 .dbd.OH, R.sub.2 .dbd.OR.sub.7, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
II:
with R.sub.1 .dbd.OH, R.sub.4 .dbd.OR.sub.7, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms ##STR18## III:
with R.sub.1 .dbd.OH, R.sub.2 .dbd.OR.sub.9, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
IV:
with R.sub.1 .dbd.OH, R.sub.4 .dbd.OR.sub.9, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
V:
with R.sub.1 .dbd.OH, R.sub.8 .dbd.OR.sub.9, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
VI:
with R.sub.2 .dbd.OH, R.sub.6 .dbd.OR.sub.9, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.7, R.sub.8, R.sub.9 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms ##STR19## VII:
with R.sub.1 .dbd.OH, R.sub.4 .dbd.OR.sub.11, R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
VIII:
with R.sub.2 .dbd.OH, R.sub.6 .dbd.OR.sub.11, R.sub.1, R.sub.3, R.sub.4, R.sub.5, R.sub.7, R.sub.8, R.sub.9, R.sub.10, R.sub.11 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms
IX:
with R.sub.9 .dbd.OH, R.sub.10 .dbd.OR.sub.11, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.11 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms ##STR20## X:
with R.sub.9 .dbd.OH, R.sub.10 .dbd.OR.sub.11, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.11 =identical or different and selected from the group consisting of H, C.sub.1 -C.sub.10 -linear or branched alkyls and halogen atoms.

19 more elements

Dependencies are inferred from the claim text.

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