Disclosed herein a self-healing, flexible, conductive compositions. The conductive compositions include conductive polymers and acidic polyacrylamides. The compositions are useful in a wide range of applications, including wearable electronics and sensors. The compositions may be prepared using environmentally friendly procedures.

The present disclosure provides a resin blend. The resin blend includes at least one diluent containing a single phthalonitrile functional group and at least one diphthalonitrile resin. Also provided are prepregs including the resin blend impregnated into continuous reinforcing fibers or a cloth. Similarly, the present disclosure provides a molding compound including chopped reinforcing fibers distributed in the resin blend. An article is also provided, which includes polymerization product of the resin blend. An alternative article includes a substrate and a layer of the resin blend disposed on the substrate. The diluent typically improves processability of the resin blend and lowers the softening temperature of the polymerization product of the resin blend.

Disclosed herein is a prepreg including a woven fabric base and a semi-cured product of a resin composition impregnated into the woven fabric base. The resin composition contains a maleimide resin as Component (A), an acrylic resin as Component (B), and a phenol resin as Component (C). The Component (B) has a weight average molecular weight falling within the range from 200,000 to 850,000.

One embodiment may provide a method for producing a polyimide film, the method comprising the steps of: polishing the surface of a casting body; producing a gel sheet by casting a precursor on the polished surface of the casting body, and drying same; and producing a polyimide film by heat-treating the gel sheet, wherein the roughness of the polished surface of the casting body is 0.1 nm to 160 nm, and when the area of the casting body onto which the precursor is casted is partitioned by 1 cm1 cm, the area corresponding to a defect reduction region is at least 90%, and the polyimide film has a yellowness of at most 3, a haze of at most 1%, a permeability of at least 88%, a modulus of at least 5.0 GPa and a surface hardness of at least HB.

Disclosed herein a self-healing, flexible, conductive compositions. The conductive compositions include conductive polymers and acidic polyacrylamides. The compositions are useful in a wide range of applications, including wearable electronics and sensors. The compositions may be prepared using environmentally friendly procedures.

The present invention relates to a process for chemically degrading materials containing benzoxazine resin, in particular benzoxazine resins, benzoxazine resin pre-polymers and benzoxazine resin-containing plastics, that enables a high quality recycling process for used up benzoxazine resin-containing materials, in particular the separation of composite materials, such as duromer-based fiber composite plastics containing a benzoxazine resin matrix, and reuse of the benzoxazine-containing materials.

The present disclosure provides an organic sulfur acid-free composition containing a benzoxazine, phenolic compound and nitrogen-containing heterocyclic compound. The organic sulfur acid-free composition, upon curing at temperatures as low as 130-140 C., renders void free cured articles having well balanced thermal, chemical and mechanical properties. The organic sulfur acid-free composition may be used in a variety of applications, such as in coatings, structural and non-structural composites and encapsulating systems for electronic and electrical components.

Provided are an emulsion of a nitrogen atom-containing polymer or a salt thereof, the emulsion having high emulsion stability and having a low dispersity of the particle diameter of emulsified particles, and a method for producing the emulsion. Also provided is a method for producing particles including a crosslinked nitrogen atom-containing polymer or a salt thereof by using the emulsion described above. Disclosed is a method for producing an emulsion of a nitrogen atom-containing polymer or a salt thereof, the method including a step of mixing a first solution that includes a nitrogen atom-containing polymer or a salt thereof and a hydrophilic solvent and has a viscosity of 10 to 2,000 mPa.Math.s, and a second solution that includes a hydrophobic solvent and has a viscosity of 1 to 100 mPa.Math.s, stirring the mixture, and thus obtaining an emulsion of the nitrogen atom-containing polymer or a salt thereof, wherein a ratio between the viscosity of the first solution and the viscosity of the second solution is in a range of 0.1:1 to 300:1.

The present application relates to a phthalonitrile resin, a polymerizable composition, a prepolymer, a composite, a preparation method therefor, and a use thereof. The present application can provide: phthalonitrile having excellent curability, exhibiting a suitable process temperature and a wide process window, and capable of forming a composite having excellent physical properties; a polymerizable composition using the same; and a prepolymer.

The present disclosure provides a curable system containing a benzoxazine and a benzothiazole sulfenamide. The curable system may be catalyzed at temperatures generally used to cure multifunctional epoxy resins yet exhibits improved pot-life and processing times and provides a cured article that exhibits acceptable thermo mechanical properties.