A golf ball 2 includes a main body 4 and a paint layer 6 positioned outside the main body 4. The main body 4 includes a spherical core 8, a mid layer 10 positioned outside the core 8, and a cover 12 positioned outside the mid layer 10. An indentation depth, measured when the paint layer 6 in a cross-section along a plane passing through a central point of the golf ball 2 is pressed by a force of 30 mgf in a direction perpendicular to the cross-section, is not less than 300 nm and not greater than 3000 nm. The paint layer 6 preferably has a thickness of not less than 5 μm and not greater than 50 μm.

The present invention relates to a method for preparing a graft copolymer powder, which includes: performing emulsion polymerization of a conjugated diene polymer, an aromatic vinyl monomer and an alkyl (meth)acrylate monomer to prepare a graft copolymer latex; coagulating the graft copolymer latex; aging the coagulated graft copolymer; preparing a wet powder of the graft copolymer by dehydrating the aged graft copolymer; and adding poly(oxyalkylene)diglycolic acid to the wet powder of the graft copolymer.

A golf ball 2 includes a main body 4 and a paint layer 6 positioned outside the main body 4. The main body 4 includes a spherical core 8, a mid layer 10 positioned outside the core 8, and a cover 12 positioned outside the mid layer 10. An indentation depth, measured when the paint layer 6 in a cross-section along a plane passing through a central point of the golf ball 2 is pressed by a force of 30 mgf in a direction perpendicular to the cross-section, is not less than 300 nm and not greater than 3000 nm. The paint layer 6 preferably has a thickness of not less than 5 μm and not greater than 50 μm.

A powdery and/or granular material which achieves excellent dispersibility of fine polymer particles in a matrix resin is provided. The powdery and/or granular material contains specific fine polymer particles (A) and a specific resin (B), and has pores with an average pore diameter of 0.03 μm to 1.00 μm, where a total volume of the pores is not less than 0.0600 mL/g.

The present invention relates to a non-coating thermoplastic resin composition, a method for manufacturing a molded article by using the same, and a molded article manufactured by the same. More specifically, the present invention is characterized by providing the thermoplastic resin composition which contains polycarbonate, polysiloxane-polycarbonate copolymer, polyester, master-batched carbon black, and additives in specific contents and the molded article, which has excellent chemical resistance, mechanical properties, light resistance, hydrolysis resistance, and low glossiness, manufactured by using the same.

The present disclosure relates to a novel resin composition which imposes a reduced environmental load and which is excellent in dispersibility of fine polymer particles. Provided is a resin composition containing water, fine polymer particles (A) having a specific feature, and a thermosetting resin (B) having a specific feature. The resin composition contains the water, the fine polymer particles (A), and the thermosetting resin (B) in respective specific amounts, does not substantially contain an organic solvent, and contains sulfur (S) in an amount falling within a specific range and phosphorus (P) in an amount falling within a specific range.

The present invention relates to a method for preparing a graft copolymer powder, which includes: performing emulsion polymerization of a conjugated diene polymer, an aromatic vinyl monomer and an alkyl (meth)acrylate monomer to prepare a graft copolymer latex; coagulating the graft copolymer latex; aging the coagulated graft copolymer; preparing a wet powder of the graft copolymer by dehydrating the aged graft copolymer; and adding poly(oxyalkylene)diglycolic acid to the wet powder of the graft copolymer.

The invention relates to a process for producing a foam molded part, wherein a foamable material S comprising a thermoplastic polymer matrix M and at least one foaming agent F is foamed by foam injection molding. The polymer matrix M is preferably based on at least one thermoplastic styrene copolymer, such as ABS and ASA, and wherein the at least one foaming agent F is selected from chemical foaming agents, releasing carbon dioxide, and physical foaming agents, being carbon dioxide or nitrogen.

A circuit board includes an insulating made by a low dielectric resin composition includes a low dielectric resin containing acid anhydride, an epoxy resin, polyphenylene ether resin with vinyl and active esters, maleic acid liquid polybutadiene, and an accelerator. Such low dielectric resin can be dissolved in organic solvent more easily than a low dielectric resin without acid anhydride, and the low dielectric resin containing acid anhydride has a better compatibility with other organic components than a low dielectric resin without acid anhydride. A low dielectric resin composition with lower dielectric constant and better properties can thus be obtained.

A polypropylene-based graft polymer is prepared by graft polymerization of a vinyl monomer onto polypropylene-based resin particles containing 100 parts by mass of a polypropylene resin and 5 to 25 parts by mass of an acid-modified olefin resin and having a volume-average particle size of 50 to 850 nm. A thermoplastic resin composition includes the polypropylene-based graft polymer. A molded article is obtained by molding the thermoplastic resin composition.