Abstract: Modifying agents, e.g., a poly(sulfonyl) azide, are attached to a substrate surface, e.g., the surface of a polyolefin particle, by a process comprising the steps of: A. Contacting in an open contact zone and under a flow of inert gas a substrate with a modifying agent, binding agent, e.g., a phenolic-based antioxidant, and a liquid mixing agent, e.g., methylene chloride, to form a substrate mixture; B. Closing the contact zone and stopping the flow of inert gas to the contact zone; C. Agitating the substrate mixture under the inert gas in the closed contact zone to commence evaporation of the liquid mixing agent; D. Reducing the temperature and pressure of the closed contact zone while continuing to agitate the substrate mixture; and E. Completing the substantial evaporation of the mixing agent from the substrate mixture by opening the contact zone and initiating an inert gas flow while continuing agitation of the substrate mixture and maintaining a reduced pressure.

Abstract: Modifying agents, e.g., a poly(sulfonyl) azide, are attached to a substrate surface, e.g., the surface of a polyolefin particle, by a process comprising the steps of: A. Contacting in an open contact zone and under a flow of inert gas a substrate with a modifying agent, binding agent, e.g., a phenolic-based antioxidant, and a liquid mixing agent, e.g., methylene chloride, to form a substrate mixture; B. Closing the contact zone and stopping the flow of inert gas to the contact zone; C. Agitating the substrate mixture under the inert gas in the closed contact zone to commence evaporation of the liquid mixing agent; D. Reducing the temperature and pressure of the closed contact zone while continuing to agitate the substrate mixture; and E. Completing the substantial evaporation of the mixing agent from the substrate mixture by opening the contact zone and initiating an inert gas flow while continuing agitation of the substrate mixture and maintaining a reduced pressure.

Abstract: The instant invention is a coated polymeric particulate, and a process for coating a polymeric particulate. The coated polymeric particulate includes a polymeric particulate; and a coating composition present on at least a portion of at least one surface of the polymeric particulate. The coating includes an interconnected media; and at least one discrete island at least partially embedded in the interconnected media. The process for coating a polymeric particulate includes the following steps: (1) selecting a polymeric particulate; (2) selecting an aqueous dispersion comprising (a) a small particle component, wherein the small particle component comprises a polyolefin polymer having an average particle size in the range of 0.02 to 0.15 ?m; (b) a large particle component, wherein the large particle component comprises a polyolefin polymer having an average particle size in the range of 0.3 to 0.

Abstract: The present invention relates to substantially free-flowing polymer particles. The polymer particles are those which have a one millimeter penetration temperature of less than about 75° C. as determined by thermal mechanical analysis or an unconfined yield strength of greater than about 15 pounds per square foot (73 kilograms per square meter). The composition also comprises an effective amount of an anti-blocking agent in the presence or absence of a binding agent.

Abstract: The present invention relates to substantially free-flowing polymer particles. The polymer particles are those which have a one millimeter penetration temperature of less than about 75° C. as determined by thermal mechanical analysis or an unconfined yield strength of greater than about 15 pounds per square foot (73 kilograms per square meter). The composition also comprises an effective amount of an anti-blocking agent in the presence or absence of a binding agent.

Abstract: A membrane-electrode structure for use in an electrochemical cell comprising an ion exchange membrane with a cathode layer and several intermediate layers between the cathode and the membrane. The intermediate layers comprises at least two layers or zones of inorganic solid particles and an organic polymer binder. The intermediate layer or zone adjacent to the membrane comprises more than 50% by weight of inorganic particles and the other layers or zones have 50% by weight or less of inorganic particles.

Abstract: A membrane-electrode structure for use in an electrochemical cell comprising an ion exchange membrane with a cathode layer and an intermediate layer between the cathode and the membrane. The intermediate layer comprises about 5 to 80% by weight of inorganic solid particles and about 95 to 20% by weight of an ionic conductive polymeric binder.

Abstract: The invention is a membrane/electrode combination comprising: an ion exchange membrane having a plurality of interconnected roadways of catalytically active particles bonded to at least one face of the membrane.

Abstract: The invention is a membrane/electrode combination having an electrically conductive screen which has a first and a second face. At least the first face of the screen is substantially flat. The screen has a plurality of openings passing therethrough and connecting the first and the second faces of the screen. The openings occupying up to about 75% of the surface area of each face of the electrically conductive screen. The first face of an ion exchange membrane film, which has a first and a second face, is attached to the first face of the electrically conductive screen, thereby leaving portions of the first face of the membrane film exposed through the openings in the electrically conductive screen. A plurality of catalytically active particles are disposed on the exposed portions of the first face of the membrane film in electrical and physical contact with the membrane and with the electrically conductive screen.

Abstract: A method and apparatus for installing a sheet membrane in an electrolysis cell is disclosed. In the procedure, a rectangular sheet is first soaked in a selected wetting liquid preliminary to installation, one edge of the rectangular sheet is grasped in a lengthwise rigid releasable clamp, that edge is then positioned through a slot to extend the sheet member from a transport cylinder whereupon the sheet is rolled around the cylinder. This leaves an exposed marginal edge on the sheet which is clamped in a second and similar clamp. This then enables the sheet to be transported and positioned above a slot where the sheet is unrolled and positioned through the slot into an electrolysis cell. Suitable apparatus is also disclosed.

Abstract: The invention is a membrane/electrode combination having an electrically conductive screen which has a first and a second face. The first face is substantially flat and the screen has a plurality of openings passing through it. The openings connect the first and the second faces of the screen and occupy up to about 75% of the surface area of each face of the electrically conductive screen. There is also an ion exchange membrane film having a first and a second face. The first face of the membrane film is attached to the first face of the electrically conductive screen, thereby leaving portions of the first face of the membrane film exposed through the openings in the electrically conductive screen. A plurality of catalytically active particles are disposed on the exposed portions of the first face of the membrane film and are in electrical and physical contact with the membrane and with the electrically conductive screen.

Abstract: The invention is a method for making an improved membrane/electrode combination by at least partially coating at least a portion of a first face of a screen template with a plurality of catalytically active particles, where the substantially flat screen has the first face, a second face, and a plurality of openings passing therethrough which connect the first and the second faces of the screen. The openings occupy up to about 75% of the surface area of each face of the screen template. The coated face of the screen template is contacted with an ion exchange membrane. The catalytically active particles are transferred from the screen template to the membrane and the particles are bonded to the membrane.