A covering composition in which a heat-resistant resin (A), a non melt-processible fluorine-containing polymer (B) and a melt-processible fluorine-containing polymer (C) are dispersed in a water medium. The particulate resins (A) to (C) have an average particle size of 0.1 to 10 ?m, and the covering composition is substantially free from methylcellulose. Also disclosed is a covered article including a substrate; a primer layer formed by directly applying the covering composition to the substrate; and a topcoat layer containing a fluorine-containing polymer.

A covering composition in which a heat-resistant resin (A), a non melt-processible fluorine-containing polymer (B) and a melt-processible fluorine-containing polymer (C) are dispersed in a water medium. The particulate resins (A) to (C) have an average particle size of 0.1 to 10 ?m, and the covering composition is substantially free from methylcellulose. Also disclosed is a covered article including a substrate; a primer layer formed by directly applying the covering composition to the substrate; and a topcoat layer containing a fluorine-containing polymer.

Fractal-like polymeric particles having a hierarchical, branched structure are disclosed. The particles have fibers with nanometer-scale diameters on their peripheries, which enables a number of unique and highly desirable properties. The particles are fabricated by a method combining phase separation and shear forces of different solutions, in particular a polymer solution. In addition, the particles may be used as coatings, nonwovens, textiles and viscosity modifiers and adhesives, among other applications.

Fractal-like polymeric particles having a hierarchical, branched structure are disclosed. The particles have fibers with nanometer-scale diameters on their peripheries, which enables a number of unique and highly desirable properties. The particles are fabricated by a method combining phase separation and shear forces of different solutions, in particular a polymer solution. In addition, the particles may be used as coatings, nonwovens, textiles and viscosity modifiers and adhesives, among other applications.

A long-acting super-hydrophobic coating resistant to water pressure impact and preparation method thereof. The long-acting super-hydrophobic coating includes a conductive substrate and the following raw materials in parts by weight: 1 part to 10 parts of titanium source or zinc source, 40 parts to 100 parts of deionized water, 20 parts to 50 parts of hydrochloric acid or 20 parts to 40 parts of sodium hydroxide, 1 part to 10 parts of electrolyte, 1 part to 10 parts of low surface energy modifier, 10 parts to 20 parts of high molecular polymer, 1 part to 5 parts of carbon nanotube and 70 parts to 100 parts of organic solvent. The long-acting super-hydrophobic coating has an organic-inorganic nano-interpenetrating network structure, which improves the stability of the multi-stage nano-micro structure, so that the super-hydrophobic coating surface has a good high-pressure water impact resistance and high-pressure static water resistance.

A long-acting super-hydrophobic coating resistant to water pressure impact and preparation method thereof. The long-acting super-hydrophobic coating includes a conductive substrate and the following raw materials in parts by weight: 1 part to 10 parts of titanium source or zinc source, 40 parts to 100 parts of deionized water, 20 parts to 50 parts of hydrochloric acid or 20 parts to 40 parts of sodium hydroxide, 1 part to 10 parts of electrolyte, 1 part to 10 parts of low surface energy modifier, 10 parts to 20 parts of high molecular polymer, 1 part to 5 parts of carbon nanotube and 70 parts to 100 parts of organic solvent. The long-acting super-hydrophobic coating has an organic-inorganic nano-interpenetrating network structure, which improves the stability of the multi-stage nano-micro structure, so that the super-hydrophobic coating surface has a good high-pressure water impact resistance and high-pressure static water resistance.

A coating for a medical device or appliance may include a fluoropolymer and a polyimide. Such coatings may provide a lubricious exterior surface that facilitates insertion or displacement of a medical device in a body lumen. Some coatings that include a fluoropolymer and a polyimide may, among other functions and characteristics, provide increased strength and/or durability relative to some other coatings.

A coating for a medical device or appliance may include a fluoropolymer and a polyimide. Such coatings may provide a lubricious exterior surface that facilitates insertion or displacement of a medical device in a body lumen. Some coatings that include a fluoropolymer and a polyimide may, among other functions and characteristics, provide increased strength and/or durability relative to some other coatings.

A high-flow polymer composition includes a polyphenylsulfone (PPSU) and a PEEK-PEDEK copolymer. The polymer composition surprisingly exhibits improved toughness while maintaining chemical resistance, making it suitable for the manufacture of shaped articles where a combination of high-flow, impact resistance, and chemical resistance are required.

A high-flow polymer composition includes a polyphenylsulfone (PPSU) and a PEEK-PEDEK copolymer. The polymer composition surprisingly exhibits improved toughness while maintaining chemical resistance, making it suitable for the manufacture of shaped articles where a combination of high-flow, impact resistance, and chemical resistance are required.