An ultra-high molecular weight, ultra-fine particle size polyethylene has a viscosity average molecular weight (Mv) greater than 1×10.sup.6. The polyethylene is spherical or are sphere-like particles having a mean particle size of 10-100 μm, having a standard deviation of 2-15 μm and a bulk density of 0.1-0.3 g/mL. Using the polyethylene as a basic polyethylene, a grafted polyethylene can be obtained by means of a solid-phase grafting method; and a glass fiber-reinforced polyethylene composition comprising the polyethylene and glass fibers, and a sheet or pipe prepared therefrom; a solubilized ultra-high molecular weight, ultra-fine particle size polyethylene; and a fiber and a film prepared from the solubilized ultra-high molecular weight, ultra-fine particle size polyethylene may also be obtained. The method has simple steps, is easy to control, has a relatively low cost and a high repeatability, and can realize industrialisation.

An ultra-high molecular weight, ultra-fine particle size polyethylene has a viscosity average molecular weight (Mv) greater than 1×10.sup.6. The polyethylene is spherical or are sphere-like particles having a mean particle size of 10-100 μm, having a standard deviation of 2-15 μm and a bulk density of 0.1-0.3 g/mL. Using the polyethylene as a basic polyethylene, a grafted polyethylene can be obtained by means of a solid-phase grafting method; and a glass fiber-reinforced polyethylene composition comprising the polyethylene and glass fibers, and a sheet or pipe prepared therefrom; a solubilized ultra-high molecular weight, ultra-fine particle size polyethylene; and a fiber and a film prepared from the solubilized ultra-high molecular weight, ultra-fine particle size polyethylene may also be obtained. The method has simple steps, is easy to control, has a relatively low cost and a high repeatability, and can realize industrialisation.

An ultra-high molecular weight, ultra-fine particle size polyethylene has a viscosity average molecular weight (Mv) greater than 1×10.sup.6. The polyethylene is spherical or are sphere-like particles having a mean particle size of 10-100 μm, having a standard deviation of 2-15 μm and a bulk density of 0.1-0.3 g/mL. Using the polyethylene as a basic polyethylene, a grafted polyethylene can be obtained by means of a solid-phase grafting method; and a glass fiber-reinforced polyethylene composition comprising the polyethylene and glass fibers, and a sheet or pipe prepared therefrom; a solubilized ultra-high molecular weight, ultra-fine particle size polyethylene; and a fiber and a film prepared from the solubilized ultra-high molecular weight, ultra-fine particle size polyethylene may also be obtained. The method has simple steps, is easy to control, has a relatively low cost and a high repeatability, and can realize industrialisation.

The invention relates to a method for producing a polymer master batch and a polymer composition, wherein the method comprises providing at least one monomer capable of forming a poly(hydroxy carboxylic acid), providing a graphene nano-filler, mixing the monomer and the graphene nano-filler and letting the monomer polymerize in the presence of the graphene nano-filler. The polymer together with the graphene nano-filler is further blended with another polymer to form a polymer composite. The invention also relates to a polymer composition with graphene nano-filler and a composite material comprising a polymer composite with graphene nano-fillers.

The invention relates to a method for producing a polymer master batch and a polymer composition, wherein the method comprises providing at least one monomer capable of forming a poly(hydroxy carboxylic acid), providing a graphene nano-filler, mixing the monomer and the graphene nano-filler and letting the monomer polymerize in the presence of the graphene nano-filler. The polymer together with the graphene nano-filler is further blended with another polymer to form a polymer composite. The invention also relates to a polymer composition with graphene nano-filler and a composite material comprising a polymer composite with graphene nano-fillers.

The object of the present invention is to provide a cleaning agent that is superior in the initial cleaning effect and allows residues to be easily distributed evenly in the next fabricated molded article. The object is achieved by a cleaning agent used for a molding machine and including a thermoplastic resin and a glass wool.

The object of the present invention is to provide a cleaning agent that is superior in the initial cleaning effect and allows residues to be easily distributed evenly in the next fabricated molded article. The object is achieved by a cleaning agent used for a molding machine and including a thermoplastic resin and a glass wool.

Disclosed herein are polyamide compositions having decreased release of substances in warm water and increased resistance to oxidizing agents and which therefore are suitable for warm water applications, in particular for warm drinking water applications.

Disclosed herein are polyamide compositions having decreased release of substances in warm water and increased resistance to oxidizing agents and which therefore are suitable for warm water applications, in particular for warm drinking water applications.

A styrene resin composition includes: a resin (A) comprising a styrene resin (A1) having a syndiotactic structure and an aliphatic polyamide (A2); and 0.05 to 0.75% by mass of a metal salt (B) of a higher fatty acid. The mass ratio [(A1)/(A2)] between the styrene resin (A1) and the aliphatic polyamide (A2) in the resin (A) is 25/75 to 55/45.