Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.

A powder coating composition grindable at non-cryogenic temperatures includes: (a) a first polymer having a number average molecular weight (Mn) of more than 1,000 and a Tg of at least 40 C.; (b) a second polymer having a Tm of at least 100 C.; and optionally (c) a cross-linker. The first polymer and the second polymer are different from one another, and each of the first and second polymers have less than 25 wt % fluorine-containing monomeric units, with wt % based on the total weight of the monomeric units in each polymer. Upon grinding at a temperature above 4 C. the coating composition has an average particle size from 15 to 150 microns. Further coating compositions, methods of preparing coating compositions, coating systems, and substrates coated with a powder coating composition are also disclosed.

A powder coating composition grindable at non-cryogenic temperatures includes: (a) a first polymer having a number average molecular weight (Mn) of more than 1,000 and a Tg of at least 40 C.; (b) a second polymer having a Tm of at least 100 C.; and optionally (c) a cross-linker. The first polymer and the second polymer are different from one another, and each of the first and second polymers have less than 25 wt % fluorine-containing monomeric units, with wt % based on the total weight of the monomeric units in each polymer. Upon grinding at a temperature above 4 C. the coating composition has an average particle size from 15 to 150 microns. Further coating compositions, methods of preparing coating compositions, coating systems, and substrates coated with a powder coating composition are also disclosed.

A method for generating a shingle roof coating is described. The method includes receiving an asphalt feedstock and separately proceeds to mix an elastomeric polymer and an asphalt flux to generate a first concentrate. The first concentrate is then heated separately from the asphalt feedstock. The method then mixes the first concentrate with the asphalt feedstock and heats the combined first concentrate and the asphalt feedstock to generate the shingle roof coating. The amount of elastomeric polymer in the first concentrate is adjusted based on the type of asphalt feedstock such that the resulting shingle roof coating includes 0.5% to 6% by weight of the elastomeric polymer.

A method for generating a shingle roof coating is described. The method includes receiving an asphalt feedstock and separately proceeds to mix an elastomeric polymer and an asphalt flux to generate a first concentrate. The first concentrate is then heated separately from the asphalt feedstock. The method then mixes the first concentrate with the asphalt feedstock and heats the combined first concentrate and the asphalt feedstock to generate the shingle roof coating. The amount of elastomeric polymer in the first concentrate is adjusted based on the type of asphalt feedstock such that the resulting shingle roof coating includes 0.5% to 6% by weight of the elastomeric polymer.

An asphalt composition for use as a shingle roof coating is described. The asphalt composition includes a first asphalt feedstock and a first concentrate. The first concentrate includes an elastomeric polymer and an asphalt flux. The asphalt composition includes 0.5% to 6% by weight of the elastomeric polymer. The elastomeric polymer includes a styrenic block copolymer. The first concentrate includes 3% by weight to 25% by weight of the styrenic block copolymer. The first concentrate includes 3% by weight to 15% by weight of one of an ethylene polymer and an ethylene propylene copolymer. The first concentrate has a penetration of at least 100 dmm.

An asphalt composition for use as a shingle roof coating is described. The asphalt composition includes a first asphalt feedstock and a first concentrate. The first concentrate includes an elastomeric polymer and an asphalt flux. The asphalt composition includes 0.5% to 6% by weight of the elastomeric polymer. The elastomeric polymer includes a styrenic block copolymer. The first concentrate includes 3% by weight to 25% by weight of the styrenic block copolymer. The first concentrate includes 3% by weight to 15% by weight of one of an ethylene polymer and an ethylene propylene copolymer. The first concentrate has a penetration of at least 100 dmm.

The invention is to provide a method for producing an aqueous resin dispersion capable of forming a coating film superior in adhesion to a polypropylene base material, and water resistance. Specifically, the invention provides a method for producing an aqueous resin dispersion, including a step of mixing and polymerizing a polyolefin dispersion (A), a radically polymerizable monomer (B), and a surfactant for emulsion polymerization (C), wherein the amount of the radically polymerizable monomer (B) mixed is 0.5 to 2 times the solid component of the polyolefin dispersion (A) in terms of parts by mass, and the amount of the solid component of the surfactant for emulsion polymerization (C) mixed is 0 to 3 parts by mass with respect to 100 parts by mass of the radically polymerizable monomer (B).

The invention is to provide a method for producing an aqueous resin dispersion capable of forming a coating film superior in adhesion to a polypropylene base material, and water resistance. Specifically, the invention provides a method for producing an aqueous resin dispersion, including a step of mixing and polymerizing a polyolefin dispersion (A), a radically polymerizable monomer (B), and a surfactant for emulsion polymerization (C), wherein the amount of the radically polymerizable monomer (B) mixed is 0.5 to 2 times the solid component of the polyolefin dispersion (A) in terms of parts by mass, and the amount of the solid component of the surfactant for emulsion polymerization (C) mixed is 0 to 3 parts by mass with respect to 100 parts by mass of the radically polymerizable monomer (B).

Process for obtaining polyethylene with an MFI (190 C/2.16 kg) of at least 4 g/10 minutes and a melt strength (190 C.) of at least 8.0 cN, said process involving extrusion of low density polyethylene (LDPE) with an MFI of at least 5 g/10 minutes and a vinyl content of less than 0.25 terminal vinyl groups per 1000 C-atoms (measured with NMR in deuterated tetrachloroethane solution)in the presence of 500-5,000 ppm, based on the weight of low density polyethylene, of an organic peroxide.