Abstract: This invention relates to novel copolymers based on the copolymerization product of hydroxyl (meth)acrylate esters and (meth)acrylate esters of hydroxyalkyl carbamates; and other homopolymers and copolymers base on (meth)acrylate esters. In addition, novel copolymer blends may be formulated from individual copolymers based on hydroxyl (meth)acrylate esters and individual (meth)acrylate esters of hydroxyalkyl carbamates. Mixtures including crosslinking agents may be used to provide curable copolymer or copolymer-blend coating compositions.

Abstract: A coating of hydrophobic polymer is prepared by contacting a substrate with an aqueous media containing amphiphilic polymer and polymerizing polymerizable component to provide the hydrophobic polymer coating. The processes can be used to make stable dispersions of particles, such as pigments, for paint compositions.

Abstract: A process for catalytically converting a feedstock into a product which comprises:(a) contacting the feedstock with a fluidized mass of solid particles comprising crystalline microporous three dimensional solid catalyst in a reaction zone at conditions effective to convert the feedstock into the product;(b) contacting the particles in the reaction zone with a first purge medium to reduce the amount of at least one of the feedstock and the product in contact with the particles; and(c) contacting the particles in the reaction zone with regeneration medium at conditions effective to improve at least one catalytic property of the catalyst, provided that steps (a), (b) and (c) are repeated periodically.

Abstract: A process for catalytically converting a feedstock into a product which comprises:(a) contacting the feedstock with a solid composition comprising an effective amount to promote the chemical conversion of small pore crystalline microporous three dimensional solid catalyst at conditions effective to convert the feedstock into the product and to form carbonaceous deposit material on the solid composition;(b) contacting the carbonaceous deposit material-containing solid composition with regeneration medium at conditions effective to remove only a portion of the carbonaceous deposit material from the solid composition; and(c) repeating step (a) using as at least a portion of the solid composition previously subjected to step (b).

Abstract: A process for converting a feedstock containing 1 to about 6 carbon atoms per molecule which includes (a) contacting the feedstock with a solid composition comprising a crystalline microporous three dimensional solid catalyst having pores and being capable of promoting the conversion, and matrix material at conditions effective to convert the feedstock, to produce at least one desired product, and to at least partially deactivate the solid composition; (b) contacting the deactivated solid composition with regeneration medium at conditions to at least partially regenerate the solid composition; and (c) repeating step (a), the improvement which comprises (d) contacting the regenerated solid composition prior to step (c) to condition the regenerated solid composition to have increased effectiveness in step (c).

Abstract: A process for producing olefins comprising:(a) contacting hydrogen and at least one carbon oxide in a first reaction zone at conditions effective to chemically react the hydrogen and carbon oxide and produce at least one product, e.g., methanol, in the effluent of the first reaction zone;(b) contacting the effluent containing the product in a second reaction zone at conditions effective to chemically react the product and produce olefins in the effluent of the second reaction zone;(c) recovering an olefin-enriched product from the effluent of the second reaction zone; and(d) subjecting at least one of hydrogen and at least one carbon oxide from the effluent of the second reaction zone to step (a).

Abstract: A process for catalytically converting a feedstock into a product comprising contacting the feedstock with crystalline microporous three dimensional solid catalyst having the ability to promote the conversion at conditions effective to convert the feedstock to the product, the solid catalyst being present in a slurry with a liquid other than the feedstock or the product which is less reactive than the feedstock.

Abstract: A self-acting fluid non-return valve (e.g. a prosthetic heart valve) comprises a flap member located in a smooth bored passage to turn about a pivoting axis between closed and open positions under the influence of pulsing fluid flow through the passage. The pivoting axis divides the flap member into major and minor areas, the former of which is downstream of the axis when the flap member is open to fluid flow. The movement of the flap member is caused by an aerofoil shaping of the flap member which is localized to a part only of the major area.