Electrically conductive and electromagnetic radiation absorptive coating compositions and the like
AssigneeUnitech Co., Ltd.
InventorWayne B. LeGrande
Life of this patent
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Abstract
A coating composition having a water soluble emulsion polymer binder. The binder is a blend of a first emulsion containing a conjugated diene as monomer or comonomer, and a second emulsion containing an acrylic polymer. An effective amount of electrically conductive particles is dispersed in the binder. The particles include a combination of graphite particles, and metal containing particles. A solvent effective amount of water is also present.
Claims32
A coating composition having electrically conductive and electromagnetic radiation absorptive properties, comprising:
- (1) a water emulsion polymer binder, the binder being a blend of
- (a) a first emulsion containing a water-insoluble polymer prepared from 5 to 100 percent by weight of a conjugated diene monomer or comonomer and 95 to 0 percent by weight of an ethylenically unsaturated comonomer, and
- (b) a second emulsion containing an acrylic polymer;
- (2) electrically conductive particles dispersed in the binder, the particles including a combination of
- (a) graphite particles, and
- (b) metal containing particles;
- and
- (3) water.
A coating composition having electrically conductive and electromagnetic radiation absorptive properties, comprising:
- (1) a water emulsion polymer binder, the binder being a blend of
- (a) a first emulsion containing a water-insoluble polymer of butadiene and ethylenically unsaturated comonomers, and
- (b) a second emulsion containing an acrylic polymer;
- (2) electrically conductive particles dispersed in the binder, the particles including a combination of
- (a) graphite particles, and
- (b) metal containing particles, the metal containing particles being metal coated ceramic microspheres;
- and
- (3) water.
A coating composition having electrically conductive and electromagnetic radiation absorptive properties, comprising:
- (1) a water emulsion polymer binder, the binder being a blend of
- (a) a first emulsion which is a substantially saturated carboxylated or non-carboxylated butadiene-acrylonitrile latex, and
- (b) a second emulsion containing an acrylic polymer;
- (2) electrically conductive particles dispersed in the binder, the particles including a combination of
- (a) natural flake graphite particles, and
- (b) silver coated ceramic microspheres;
- and
- (3) water.
Dependencies are inferred from the claim text.