In the diffusion coating of aluminum onto brazed metal, the penetration of the aluminum into the brazing is reduced by conducting the diffusion coating with hydrated aluminum chloride, bromide or iodide as energizer, with the energizer preferably kept out of contact with the work being coated until the energizer volatilizes. This is particularly suited for aluminizing chromium-containing surfaces. Chromium diffusion coatings are less apt to form undesirable oxide inclusions when the diffusion co...

Coatings composed of (A) a copolymer prepared by copolymerizing (1) a silicone macromer having a double bond at one end of the molecule, (2) an unsaturated monomer having on the molecule both a carboxyl or acid anhydride group and a double bond, (3) an unsaturated silane monomer having on the molecule both a hydrolyzable silyl group and a double bond, (4) an unsaturated monomer having on the molecule both an amide, imide, carbamate or urea group and a double bond and, optionally, (5) another cop...

A coating on a substrate which endows the substrate with a desired surface property, the coating comprising a cross-linked polysiloxane containing X'-- and X-groups attached to different Si atoms wherein the groups X'-- are monovalent organic groups which provide the desired surface property and the groups X-- are monovalent organic groups which are reactive with a group on the substrate surface and have a higher surface tension than the groups X'--, said coating being bonded to said substrate b...

Thin film metal particulates are removed from FEP sheetstock cheaply and quickly by immersing the coated FEP first in a base and then in an acid. Occasionally, ultrasonic vibration of the FEP may also be required. The particulates are useful as paint pigments when isolated and conversion coated. The FEP is reusable. A preferred binder for carrying the pigments is a two-component system having a tetraketimine and an isocyanate.

The invention provides an apparatus for coating tubular members, such as stents, and also provides a method for coating tubular members. The invention improves manufacturing efficiencies of existing manual-dipping technology for stents and also addresses manufacturing problems from stents having plural surface apertures associated with the presence of excess liquid, inconsistent drying of the liquid and blockage.

An apparatus for coating tubular members, such as stents comprises a liquid reservoir and a stent support member for supporting, in use, a tubular member. Support member dipping means places the support member in the liquid reservoir in use and draws the support member therefrom. Pressure differential generating means generates a pressure differential. The stent support member is arranged to provide a central passageway through a stent placed thereon, the central passageway having a plurality of...

A novel improved urethane, urethane coating formed of epxoy resin and polyisocyanate for metallic or non-metallic substrates and the like exhibits improved resistance to blistering under high moisture conditions. The coating includes an epoxy resin having functional hydroxyl groups, for example, the reaction product of epichlorohydrin and bisphenol A. A hardener is included which comprises one or more selected polyisocyanates, preferably a mixture of a selected aliphatic biuret type polyisocyana...

A coating apparatus comprising a forward bar, a liquid feed passage and a metering device for a coating liquid. The forward bar rotates about its axis in the same direction as the traveling direction of a continuously traveling band-shaped web while touching the web. When coating the web with the coating liquid, the liquid feed passage feeds the coating liquid to an area between the upstream side of the forward bar and the web with respect to the traveling direction of the web. The metering devi...

The coating head according to the present invention comprises a slit facing the supporting member along a width direction of the supporting member, the coating fluid being ejected through an opening of the slit, a front edge surface provided on an upstream side of the slit in a direction of travel of the supporting member, the front edge surface facing the supporting member, a back edge surface provided on a downstream side of the slit in the direction of travel of the supporting member, the bac...

A coating device and a coating method are provided. The coating device comprises a coating station for coating a coating liquid on a band-shaped substrate running continuously, and a coat-adjusting station disposed downstream of the coating station for adjusting the coating liquid on the substrate so that the coating liquid layer is coated on the substrate at a predetermined thickness. The coating station and the coat-adjusting station comprise first and second bars for respectively coating and ...