COMPOSITION FOR FORMING ANTIFOGGING LAYER, LAMINATE AND METHOD FOR PRODUCING LAMINATE

• Main Authors: HAMA TAKESHI, HATANAKA YUSUKE
• Format: Patent
• Language: English; Japanese
• Published: 11.01.2018
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a laminate having an antifogging layer which has good antifogging property and persistence of antifogging effect and does not show a trace of a water drip even when absorbing water; a composition for forming an antifogging layer capable of producing the laminate with good productivity; and a method for producing a laminate using the same.SOLUTION: There is provided a laminate which has: a base material; and an antifogging layer, the antifogging layer provided on the base material and containing: silica particles having an average particle diameter of primary particles of 2 nm or more and 100 nm or less; a copolymer having a structural unit derived from a vinyl-based monomer having a crosslinking functional group selected from an N-methylol group, a hydroxyl group and the like, a structural unit derived from a vinyl-based monomer having a sulfonate group and the like, and a structural unit derived from an alkyl(meth)acrylate monomer; and a hydrolysis condensate of a compound represented by general formula (1). There are also provided a composition for forming an antifogging layer, and a method for producing the laminate. In the general formula (1), Rto Reach independently represent a monovalent organic group having 1 to 6 carbon atoms, and n represents an integer of 1 to 20.SELECTED DRAWING: None 【課題】防曇性、防曇効果の持続性が良好であり、吸水しても水垂れの痕跡が残り難い防曇層を有する積層体、積層体を生産性よく製造し得る防曇層形成用組成物、及びそれを用いた積層体の製造方法を提供する。【解決手段】基材と、基材上に設けられ、１次粒子の平均粒径が２ｎｍ以上１００ｎｍ以下であるシリカ粒子、Ｎ−メチロール基、ヒドロキシル基等から選ばれる架橋官能基を有するビニル系単量体に由来の構造単位、スルホン酸基等を有するビニル系単量体に由来の構造単位、及び、アルキル（メタ）アクリレート系単量体に由来の構造単位と、を有する共重合体、並びに、一般式（１）で表される化合物の加水分解縮合物を含む防曇層と、を有する積層体、防曇層形成用組成物、及び積層体の製造方法。一般式（１）中、Ｒ１〜Ｒ４は、それぞれ独立に炭素数１〜６の１価の有機基を表す。ｎは１〜２０の整数を表す。【選択図】なし