A process for manufacturing an aramid pulp including polyvinyl pyrrolidone (PVP), the method including the steps of: combining para-aramid short-cut with PVP in an aqueous solution to form a mixture, subjecting the mixture to a refining step to form a para-aramid pulp including PVP. It has been found that the process makes it possible to obtain a PVP pulp with improved dewatering properties and energy consumption in combination with a high PVP retention.

A process for manufacturing an aramid pulp including polyvinyl pyrrolidone (PVP), the method including the steps of: combining para-aramid short-cut with PVP in an aqueous solution to form a mixture, subjecting the mixture to a refining step to form a para-aramid pulp including PVP. It has been found that the process makes it possible to obtain a PVP pulp with improved dewatering properties and energy consumption in combination with a high PVP retention.

The present disclosure is directed to insect-resistant fabrics or garments and methods for making the same. The insect-resistant fabrics or garments include an insect repelling composition containing a micellar system and optionally an insecticide composition. As an example, an insect-resistant fabric in accordance with the disclosure can include a base fabric (e.g., polyester) having been treated to include an insect repellant composition containing a micellar system. The micellar system may include one or more insect repelling agents (e.g., essential oils) contained within one or more micelles (e.g., saponins) in a first region of the fabric, and optionally an insecticide (e.g., permethrin) in second region of the base fabric. The inclusion of a micellar system in an insect repellant composition is shown herein to provide improved insect-resistant efficacy. Additionally, certain insect-resistant fabrics disclosed herein can also demonstrate durability when exposed to wear such as laundering the garment.

The present application relates to a sizing agent composition, a carbon fiber material and a composite material. The sizing agent composition includes a first composition solution and a second composition solution, and those solutions respectively has specific compound. The sizing agent comprising the composition has an excellent bonding property with a carbon fiber, and further the sizing agent can efficiently enhance heat resistance, wear resistance and processability of the carbon fiber material. The carbon fiber material sized with the sizing agent has a high adhesion property with specific resin material, therefore producing the composite material with high processability.

A sizing agent for matrix-resin-reinforcement fibers that simultaneously attains excellent cohesion and abrasion resistance of sized fibers, uniform size application on fiber surface and good bonding between sized fiber and a matrix resin; a synthetic fiber strand sized therewith; and a fiber-reinforced composite material reinforced by the sized fiber strand. The sizing agent contains a polyamide (A), a carbodiimide group-containing compound (B) and water (C), wherein the polyamide (A) has a melt viscosity ranging from 100 to 15,000 mPa.Math.s at 150° C. and the compound (B) has at least two carbodiimide groups per molecule. The polyamide (A) is preferably a water-soluble polyamide.

A sizing agent for matrix-resin-reinforcement fibers that simultaneously attains excellent cohesion and abrasion resistance of sized fibers, uniform size application on fiber surface and good bonding between sized fiber and a matrix resin; a synthetic fiber strand sized therewith; and a fiber-reinforced composite material reinforced by the sized fiber strand. The sizing agent contains a polyamide (A), a carbodiimide group-containing compound (B) and water (C), wherein the polyamide (A) has a melt viscosity ranging from 100 to 15,000 mPa.Math.s at 150° C. and the compound (B) has at least two carbodiimide groups per molecule. The polyamide (A) is preferably a water-soluble polyamide.

Fibers for artificial hair containing resin particles adhering to the fiber surface are provided. The amount of the resin particles adhering to the fiber surface is 0.3% omf or more and 1.1% omf or less. The average particle diameter of the resin particles is 1 μm or more and 20 μm or less. A method for producing the fibers for artificial hair, includes applying a resin emulsion having an average particle diameter of 350 nm or more to the fiber surface, in an amount of 0.3% omf or more and 1.1% omf or less on a solid basis. The fibers for artificial hair having an excellent combing property and a gloss close to human hair, hair ornament products including the same, and a method for producing the same are provided.

Fibers for artificial hair containing resin particles adhering to the fiber surface are provided. The amount of the resin particles adhering to the fiber surface is 0.3% omf or more and 1.1% omf or less. The average particle diameter of the resin particles is 1 μm or more and 20 μm or less. A method for producing the fibers for artificial hair, includes applying a resin emulsion having an average particle diameter of 350 nm or more to the fiber surface, in an amount of 0.3% omf or more and 1.1% omf or less on a solid basis. The fibers for artificial hair having an excellent combing property and a gloss close to human hair, hair ornament products including the same, and a method for producing the same are provided.

The present disclosure provides an antibacterial hydrophilic compound. The antibacterial hydrophilic compound may react, induced by light through a hydrogen abstraction group in the structural formula thereof, with a C—H group and thus bind to a surface of a material having the C—H group (for example, chemical fibers such as polyester, chinlon, and the like; plastics, rubbers, and other similar materials), which can impart a durable antibacterial activity and hydrophilicity to the material. The antibacterial hydrophilic compound has a relatively strong binding force to the surface of the material without damaging the mechanical properties of the raw material. The present disclosure also provides a modified material that is modified by the antibacterial hydrophilic compound.

The present invention provides an anti-pilling wool fabric with a coating having pilling resistance and resistance to fiber loss from fabric surface. The coating is formed by a coating formulation including at least two diisocyanates, at least two catalyst, a water dispersing agent, a buffer and water, which provides a polycarbodiimide crosslinker reactive to the relative less reactive groups on polypeptide of the wool fabric and promotes crosslinking between polypeptides of the wool fabric under relatively mild processing conditions so as to enhance mechanical strength of the wool fabric whilst no significant effect of the original finish merino wool fabric and/or garment and fiber loss from fabric surface are observed, compared to conventional treatment methods on wool fabric. A corresponding coating formulation and method of fabricating the anti-pilling wool fabric are also provided. The present invention is applicable to finished wool fabric which fibers are already with colorant(s), and/or dye(s), and/or reactive dye(s).