Coating apparatus for the application of fluid media to a traveling web wherein a unique fountain arrangement is provided for a reverse angle doctor blade to minimize foaming.

A coating apparatus including a programmed, movable member carrying coating means dispensing particles of a protective or decorative coating material toward the irregular surface contours of the front and the rear of automobile bodies. The programmed member displaces the coating member in a vertical direction across the irregular surface contours of the automobile bodies, maintains a substantially uniform distance between the coating means and the plane of the irregular surface contours of the a...

A process for coating articles which comprises the steps of causing a reaction between a methacrylic acid ester having hydroxyl groups and an isocyanate compound having at least two isocyanate groups in its molecule to obtain a partially urethanated compound, causing a reaction between said partially urethanated compound and a polyester having a hydroxyl group to produce an unsaturated polyester composition, applying said unsaturated polyester composition to articles to be coated, and irradiatin...

A water-dilutable coating composition particularly adaptable for electro-deposition comprising water, a water-miscible solvent, and an ammonia or amine soap of a condensation product of an adduct of an .alpha.,.beta.-ethylenically unsaturated dicarboxylic acid and an ester of a hydroxyl-free drying or semi-drying oil, unmodified or modified with rosin, is described. The condensation product will comprise from 10 to 25 percent by weight of a dienophilic compound, 75 to 90 percent by weight of the...

A coating composition capable of being crosslinked on a substrate to which it is applied which contains an acidic film-forming material containing at least two carboxyl groups and a phenolic material containing at least two 47 groups --CH.sub.2.NR.sub.1 R.sub.2 substituted in positions ortho and/or para to one or more phenolic hydroxy groups, R.sub.1 and R.sub.2 being alkyl or substituted alkyl groups.

Application of resinous organic coatings onto non-conductive surfaces by electrodeposition is accomplished by first applying on the surface a layer of conductive particles in a carrier and then employing the surface as an electrode in an electrodeposition coating process to deposit a resinous coating on the surface. Carbon or metal particles can be used in the conductive layer and any electrodepositable resinous film-forming coating composition can be utilized in the process.

The apparatus comprises a tank for retaining a pool of supporting liquid, a dispensing device associated with the tank for placing pigmented material on the surface of the pool, a roller for conveying a substrate to be coated into surface contact with the pool to lift the pigmented material from the pool, and selectively operable manipulating devices arranged to provide a desired pattern on the pigmented material of the pool. Manipulating devices comprise wave-generators, undulating tank side wa...

In coating a coating composition on a web by a bridge of the coating composition between a coating applicator and the web, a gas blowing slot is formed at the side of the coating applicator into which the web enters to remove air or dust carried on the surface of the entering support and to provide a reduced pressure space at the back side of the bridge so that the bridge is maintained stable when the coating speed is increased.

Paper having a surface coating of exfoliated three-layer clay exhibiting a surface conductivity of 10.sup.8 -10.sup.10 ohms/sq. at relative humidities from 12-15 percent may be used for making a copy sheet for electrophotography by providing an overcoating of zinc oxide. An aqueous dispersion of exfoliated three-layer clay together with water soluble electroconductive inorganic compound is described.

Coating apparatus suitable for depositing superimposed layers of two different viscous liquids or pastes on a support is provided which comprises a pair of hoppers having one lip common to both hoppers, forming the downstream lip of the upstream hopper and the upstream lip of the downstream hopper.