A proppant includes coating of a polyamide resin. The proppants may be used in subterranean well formations and hydraulic fracturing operations.

A proppant includes coating of a polyamide resin. The proppants may be used in subterranean well formations and hydraulic fracturing operations.

Anti-corrosion metal pretreatment compositions comprising a Group IVB metal, a Group IB metal and polyamidoamine polymers; replenisher compositions for the metal pretreatment compositions; methods of making the metal pretreatment compositions; methods of forming an anti-corrosion Group IVB oxide coating on at least one metal substrate surface by contacting the surface with the metal pretreatment composition; and coated metal substrates having anti-corrosion coatings deposited on the metal substrates from chrome VI free, anti-corrosion metal pretreatment compositions having enhanced corrosion resistance of the Group IVB metal oxide coatings and adhesion of the anti-corrosion and primer coating layers to metal substrates.

Anti-corrosion metal pretreatment compositions comprising a Group IVB metal, a Group IB metal and polyamidoamine polymers; replenisher compositions for the metal pretreatment compositions; methods of making the metal pretreatment compositions; methods of forming an anti-corrosion Group IVB oxide coating on at least one metal substrate surface by contacting the surface with the metal pretreatment composition; and coated metal substrates having anti-corrosion coatings deposited on the metal substrates from chrome VI free, anti-corrosion metal pretreatment compositions having enhanced corrosion resistance of the Group IVB metal oxide coatings and adhesion of the anti-corrosion and primer coating layers to metal substrates.

The present invention relates to a thermoplastic coating composition comprising at least one polyamide and at least one surface modifying agent, wherein the polyamide comprises a reaction product of: a) at least one dimerized fatty acid; b) at least one mono carboxylic acid; c) at least one linear dicarboxylic acid; and d) at least one linear diamine;
wherein the surface modifying agent is selected from slip agents, anti-blocking agents or combinations thereof; wherein the surface modifying agent is contained in 0.1 to 10 wt-%, based on the total weight of the thermoplastic coating composition; and wherein the composition preferably has a coefficient of friction (COF) of 0.2 to 1.1 which is measured according to ASTM D 1894.

The present invention relates to a thermoplastic coating composition comprising at least one polyamide and at least one surface modifying agent, wherein the polyamide comprises a reaction product of: a) at least one dimerized fatty acid; b) at least one mono carboxylic acid; c) at least one linear dicarboxylic acid; and d) at least one linear diamine;
wherein the surface modifying agent is selected from slip agents, anti-blocking agents or combinations thereof; wherein the surface modifying agent is contained in 0.1 to 10 wt-%, based on the total weight of the thermoplastic coating composition; and wherein the composition preferably has a coefficient of friction (COF) of 0.2 to 1.1 which is measured according to ASTM D 1894.

Anti-corrosion metal pretreatment compositions comprising a Group IVB metal, a Group IB metal and polyamidoamine polymers; replenisher compositions for the metal pretreatment compositions; methods of making the metal pretreatment compositions; methods of forming an anti-corrosion Group IVB oxide coating on at least one metal substrate surface by contacting the surface with the metal pretreatment composition; and coated metal substrates having anti-corrosion coatings deposited on the metal substrates from chrome VI free, anti-corrosion metal pretreatment compositions having enhanced corrosion resistance of the Group IVB metal oxide coatings and adhesion of the anti-corrosion and primer coating layers to metal substrates.

Anti-corrosion metal pretreatment compositions comprising a Group IVB metal, a Group IB metal and polyamidoamine polymers; replenisher compositions for the metal pretreatment compositions; methods of making the metal pretreatment compositions; methods of forming an anti-corrosion Group IVB oxide coating on at least one metal substrate surface by contacting the surface with the metal pretreatment composition; and coated metal substrates having anti-corrosion coatings deposited on the metal substrates from chrome VI free, anti-corrosion metal pretreatment compositions having enhanced corrosion resistance of the Group IVB metal oxide coatings and adhesion of the anti-corrosion and primer coating layers to metal substrates.

Ionomer polyamides membranes are provided, including a reaction product of a polymerizable composition including a first diacid that is a dimer acid; an ionomer component; a first diamine that is an oxyalkylene diamine; at least one second diamine comprising a primary diamine and/or a secondary diamine; and optionally at least one second diacid. The ionomer component is an ionomer diacid, an ionomer diester, or an ionomer diamine. The present disclosure also provides primers containing the ionomer polyamide dispersed in water and/or a lower alcohol. Further, articles are provided including a substrate and the ionomer polyamide or the primer disposed on the substrate. Methods are additionally provided, including methods of making an ionomer polyamide and making an article.

Anti-corrosion metal pretreatment compositions comprising a Group IVB metal, a Group IB metal and polyamidoamine polymers produce corrosion protective conversion coatings on metal substrates; replenisher compositions for the metal pretreatment compositions; methods of making the metal pretreatment compositions; methods of forming an anti-corrosion Group IVB oxide coating on at least one metal substrate surface by contacting the surface with the metal pretreatment composition; and coated metal substrates having anti-corrosion coatings deposited on the metal substrates from chrome VI free, anti-corrosion metal pretreatment compositions having enhanced corrosion resistance of the Group IVB metal oxide coatings and adhesion of the anti-corrosion and primer coating layers to metal substrates.