Asahi Kasei E-materials Corporation

Asahi Kasei Kabushiki Kaisha

Junichi Hirose

Hiroaki Takanohashi

Shuichiro Ogawa

Kentaro Shiraishi

Waka Goto

Kazuya Iseda

Michiyo Yamane

The present invention pertains to a coating film, and more particularly, to an antifogging coating film having excellent antifogging properties, ability to retain antifogging properties, and water resistance. The coating film according to the present invention contains a metal oxide (A) and a hydrophilic compound (B), wherein the elemental concentration ratio (C1s/M), which is between the element C and a metal element and which is obtained from a metal (M) spectrum derived from the metal oxide and a C1s spectrum in an elemental analysis of the surface using XPS, is within the range of 0.2-10. The relative elemental concentration of the element C obtained from a C1s spectrum derived from carbon-oxygen bonds and/or carbon-nitrogen bonds in elemental analysis of the surface using XPS may be within the range of 5-50 atomic %. The metal oxide may be colloidal silica. The coating film according to the present invention can be particularly preferably used as an antifogging coating film and a coating film for automotive exterior parts.

Highly durable antifogging coating film and coating composition

Provided is a coating composition excellent in antifouling properties, transparency and hydrophilicity, wherein the coating composition contains (A) a metal oxide particle having a number average particle size of 1 nm to 400 nm; and (B) a polymer particle, in which the content of an aqueous-phase component in the component (B), represented by the expression (I), is 20 mass % or less, where (I) (%)=(dry mass of a filtrate obtained by filtering the component (B) at a molecular cutoff of 50,000)&#xd7;(100&#x2212;total mass of solid content)/(mass of the filtrate&#x2212;dry mass of the filtrate)&#xd7;100/the total mass of solid content.

Coating composition, coating film, laminate and process for manufacturing the laminate

Coating composition, coating film, laminate, and process for manufacturing the laminate

Provided is a coating composition excellent in antifouling properties, transparency and hydrophilicity, wherein the coating composition contains (A) a metal oxide particle having a number average particle size of 1 nm to 400 nm; and (B) a polymer particle, in which the content of an aqueous-phase component in the component (B), represented by the expression (I), is 20 mass % or less, where (I)(%)=(dry mass of a filtrate obtained by filtering the component (B) at a molecular cutoff of 50,000)&#xd7;(100&#x2212;total mass of solid content)/(mass of the filtrate&#x2212;dry mass of the filtrate)&#xd7;100/the total mass of solid content.

Coating composition, coating film, laminate, and process for production of laminate

Growing community of inventors

Tokyo, Japan

Junichi Hirose