Coating compositions with improved durabilities, coatings layers and preparing method thereof
AssigneeHewlett-Packard Development Company, L.P.
InventorsYong-Jun Li, Steven Zhu, Army Zhang, Herbert Liu
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Abstract
Provided is a thermally curable coating composition for alloy substrates, comprising: curable components, comprising an epoxy resin and a multifunctional (meth)acrylate; latent curing agents, which crosslink with the curable components upon heating, and comprise an isocyanate having at least two NCO groups and an amino resin; a curing promoter, comprising an aromatic phosphate comprising at least one hydroxy group connected with the phosphorous atom; and an organic solvent. Also provided are a method for providing a coating layer onto an alloy substrate and a coating layer thus obtained.
Claims17
A thermally curable coating composition for alloy substrates, comprising:
- curable components, comprising an epoxy resin and a multifunctional (meth)acrylate,
- latent curing agents, which crosslink with the curable components upon heating, and comprise an isocyanate having at least two NCO groups and an amino resin,
- a curing promoter, comprising 2-phenoxyethyl phosphate,
- an organic solvent, and
- a pigment.
A thermally curable coating composition for alloy substrates, comprising:
- curable components including from 10 to 30 weight parts of an epoxy resin and 10 to 30 weight parts of a multifunctional (meth)acrylate,
- latent curing agents, which crosslink with the curable components upon heating, including from 1 to 10 weight parts of an isocyanate having at least two NCO groups and from 15 to 35 weight parts of an amino resin,
- a curing promoter, including from 1 to 10 weight parts of an aromatic phosphate comprising at least one hydroxy group connected with a phosphorous atom,
- from 10 to 50 weight parts of an organic solvent, and
- from 0 to 10 weight parts of a pigment.
A method for providing a coating layer onto an alloy substrate, comprising:
- applying a thermally curable coating composition onto the alloy substrate, wherein the coating composition comprises:
- curable components including from 10 to 30 weight parts of an epoxy resin and 10 to 30 weight parts of a multifunctional (meth)acrylate,
- latent curing agents, which crosslink with the curable components upon heating, including from 1 to 10 weight parts of an isocyanate having at least two NCO groups and from 15 to 35 weight parts of an amino resin,
- a curing promoter, including from 1 to 10 weight parts of an aromatic phosphate comprising at least one hydroxy group connected with a phosphorous atom,
- from 10 to 50 weight parts of an organic solvent, and
- from 0 to 10 weight parts of a pigment;
- leveling the coating composition;
- and
- heating the alloy substrate applied with the coating composition for curing.
Dependencies are inferred from the claim text.