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US 6,673,853 B2Granted
Electrodeposition coating composition
AssigneeNippon Paint Co., Ltd.
InventorsHisaichi Muramoto, Kouichi Ohara
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Abstract
The present invention provides an electrodeposition coating composition excellent in storage stability and capable of forming a novel multilayer structure comprising a particle A containing a resin (a) whose solubility parameter is δa, and a particle B containing a curing agent and a resin (b) whose solubility parameter is δb, wherein the value of (δb-δa) is not less than 1.0.
Claims5
An electrodeposition coating composition comprising a particle A containing a resin (a) whose solubility parameter is δa as well as a particle B containing a curing agent and a resin (b) whose solubility parameter is δb, wherein
- (1) the value of (δb−δa) is not less than 1.0,
- (2) as regards an electrodeposited coating film formed from said electrodeposition coating composition, the resin film formed from said particle A shows a dynamic glass transition temperature of −110 to 10°C.,
- the resin film obtained by film formation from said particle A alone shows an elongation percentage of not less than 200%, and
- the resin film formed from said particle B shows a dynamic glass transition temperature of 60 to 150°C., and
- (3) the particle A contains a curing agent and a solubility parameter δi of at least one of said curing agent satisfies δb>δi>δa.
2 more elements
Dependencies are inferred from the claim text.