Siloxane-polyester compositions
AssigneeDow Corning Corporation
InventorAnthony G. Short
Life of this patent
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Abstract
A curable composition comprising (A) a siloxane-polyester copolymer, (B) one or more solvents for the siloxane-polyester copolymer, (C) a silane having silicon-bonded alkoxy or alkoxy-alkoxy groups and a silicon-bonded substituent containing an epoxy group, (D) aluminium acetylacetonate and (E) a tetraalkyl titanate. The compositions are heat-curable and are useful for the formation of protective and decorative coatings on substrates such as metals and plastics.
Claims6
A composition which comprises (A) a siloxane-polyester copolymer resin having on average at least two .tbd.SiOM and/or .tbd.COH groups per molecule, wherein M represents a hydrogen atom or an alkyl group having from 1 to 4 inclusive carbon atoms, (B) one or more solvents for the siloxane-polyester copolymer, (C) a silane of the general formula ##STR7## wherein Z represents an organic group composed of carbon, hydrogen and oxygen having therein at least one group of the formula ##STR8## X represents a methyl or a phenyl group, Y represents an alkyl or an alkoxyalkyl group having less than 5 carbon atoms and a has a value of 0 or 1, (D) aluminium acetylacetonate and (E) a tetraalkyl titanate.
Dependencies are inferred from the claim text.