Disclosed are epoxy resins exhibiting a highly favorable combination of tensile strength and elongation with respect to prior art epoxy systems. The elastomeric epoxy resin systems of the invention are prepared utilizing a curing agent containing at least one monoprimary amine, and are particularly useful in applications such as, for example, castings, potting, composites, crack sealing, coatings, adhesives, roofing materials, flooring or reinforced membranes.

Disclosed are epoxy resins exhibiting a highly favorable combination of tensile strength and elongation with respect to prior art epoxy systems. The elastomeric epoxy resin systems of the invention are prepared utilizing a curing agent containing at least one monoprimary amine, and are particularly useful in applications such as, for example, castings, potting, composites, crack sealing, coatings, adhesives, roofing materials, flooring or reinforced membranes.

A composition contains at least a copolyamide (PA-1) as a component (I), produced by polymerization of at least one lactam and of a monomer mixture (M) which contains at least a C.sub.32-C.sub.40 dimer acid and at least a C.sub.4-C.sub.12 diamine; and a flame retardant (F1) as a component (II). The flame retardant (F1) is selected from melamine cyanurates, magnesium hydroxide, and phosphorus-containing flame retardants. A process can be used for preparing such compositions, and the composition can be used for producing shaped articles.

An improved process for forming polyamide dispersions in water utilizing carbon dioxide to facilitate dispersion of the polyamide is disclosed. The polyamides are generally below 30,000 or 40,000 g/mole molecular weight when dispersed, but can be chain extended with polyfunctional species such as polyisocyanates after dispersion. The dispersions are useful in coatings, adhesives, and inks. Composites and hybrids of these other polyamides with vinyl polymers are also disclosed and claimed.

Branched amorphous polyamide (co)polymers having a backbone formed by reacting a reaction mixture including at least 25 mol % of a di-amine selected from a secondary di-amine, a branched di-amine, or a combination thereof; and an aliphatic acid blend including a branched aliphatic dimer acid and a branched aliphatic trimer acid. The molar equivalent ratio of the di¬ amine to the aliphatic acid blend is 0.9-1.1. Preferably, the branched amorphous polyamide (co)polymer is not telechelic. The branched amorphous polyamide (co)polymer preferably exhibits one or more of a shear modulus of from 10,000 to 500,000 Pa at 70° C., a complex viscosity of greater than 1,000,000 mPa*s at 70° C., a glass transition temperature of less than 25° C., or a number average molecular weight of greater than 10,000 Da. Biodegradable and/or compostable adhesive articles including the branched amorphous polyamide (co)polymer also are disclosed.

Imidazoline functionalized oxidized fatty substance emulsifiers are made by obtaining a fatty substance composition; performing an oxidative oligomerization of the fatty substance composition to produce an oxidized fatty substance composition comprising from about 10 to about 75% by weight of oligomeric fatty acid components based on the total weight of fatty acid containing components in the composition; reacting the oxidized fatty substance composition with a polyamine comprising at least one ethylene diamine functional group with at least three hydrogens attached to the two nitrogens to form an aminoethylamido functionalized oxidized fatty substance composition; and forming an imidazoline functionalized oxidized fatty substance emulsifier from the amino-ethylamido functionalized oxidized fatty substance composition. Such compositions are particularly useful in asphalt applications and corrosion inhibition.

A polyamide composition comprising from 45 wt % to 95 wt % of polyamide polymer and from 5 wt % to 55 wt % of a modifier comprising a C.sub.18-44 dimer acid or a C.sub.18-44 dimer amine or a combination thereof. A number average molecular weight of the polyamide polymer is less than 30,000 g/mol. The polyamide composition has a chemical resistance, as measured by exposure to HCl (10%) for 14 days at 58° C., resulting in a weight loss of less than 3.0 wt %; and a moisture uptake of less than about 2.0 wt % moisture at 95% RH. A process for preparing the polyamide composition is also disclosed.

Copolymer dispersions containing polyamide segments in aqueous media form binders for coatings for various industrial and construction materials. The copolymers have a high percentage of amide linkages. The copolymers are linked into higher molecular weight species by reactions with polyisocyanates (which forms urea linkages if the other reactant is an amine or a urethane linkage if the other reactant is a hydroxyl group).

Provided are: a resin composition, containing a polyester polyurethane resin (A), an epoxy resin (B), and a polyamide resin (C); as well as a bonding film, a layered body including a resin composition layer, a layered body, and an electromagnetic wave shielding film, each using the resin composition.

A flexible polyamide including a unit formed from an aliphatic dicarboxylic acid (A1) having 18 or more carbon atoms and/or a unit formed from an aliphatic diamine (B1) having 18 or more carbon atoms, wherein the polyamide has a total content of 10 to 90% by mass of the unit formed from (A1) and the unit formed from (B1) and has a melting point of 240° C. or higher.