Sumitomo Chemical Company, Limited

Nippon Sheet Glass Company, Limited

Nippon Sheet Glass

Mikio Futagami

Masahiro Yuyama

Masahiko Moritani

Hiroyuki Kanazawa

Yasuyuki Kato

Shigeo Wake

A coating composition is disclosed which includes

Coating composition

An acrylic resin composition having excellent permanent antistatic properties, which comprises a copolymer of an acrylic monomer comprising predominantly methyl methacrylate with a specific sulfonate and optionally a specific alkylene oxide and/or acidic phosphate, and a method for the production thereof. The acrylic resin composition of the invention shows excellent antistatic properties without losing the excellent properties of methacrylic resin, such as excellent transparency, mechanical properties, heat resistance, etc., and is useful for various utilities, such as preparation of advertising display, lighting fixtures, covers, nameplate, and various decoratings.

Antistatic acrylic resin composition and method for the production

An acrylic resin composition having excellent permanent antistatic properties, which comprises a copolymer of an acrylic monomer comprising predominantly methyl methacrylate with a specific sulfonate and optionally a specific alkylene oxide and/or acidic phosphate, and a method for the production thereof. The acrylic resin composition of the invention shows excellent antistatic properties without losing the excellent properties of methacrylic resin, such as excellent transparency, mechanical properties, heat resistance, etc., and is useful for various utilities, such as preparation of advertising displays, lighting fixtures, covers, nameplates, and various decorations.

In a method for forming an abrasion-resistant coating film by heat-curing a coating composition composed mainly of a partially hydrolyzed product of alkoxysilane represented by the formula:

Method for the formation of abrasion-resistant coating film

A coating composition comprising (A) partially hydrolyzed silicon compounds, (B) an acrylic copolymer and/or a polyol and optionally (C) an etherified methylolmelamine, which is useful for improving the surface properties, such as surface hardness and chemical resistance, of plastics products, wooden products, metallic products, etc. by coating the products therewith, said products being optionally previously under-coated with an under coating composition comprising a copolymer of vinyl monomers and optionally other copolymerizable monomer(s), by which the adhesion between the coating film and the base material is improved to give a formed article having excellent properties, such as surface hardness, abrasion resistance, etc.

Coating composition and method for the improvement of surface hardness

A coating composition useful for improving the surface properties, such as surface hardness and chemical resistance, of plastic products, wooden products, metallic products, or the like, which comprises (A) partially hydrolyzed silicon compounds consisting essentially of copartial hydrolyzates of an organic silicon compound of the formula: R.sub.n Si(OR').sub.4-n wherein n is 1 to 3, R is a hydrocarbon group and R' is an alkyl, and a tetraalkoxysilane, or a mixture of partial hydrolyzates of each organic silicon compound and tetraalkoxysilane, said partial hydrolyzate of the organic silicon compound being contained in a larger ratio to the partial hydrolyzate of the tetraalkoxysilane, (B) an acrylic copolymer and an etherated methylolmelamine, and (C) a solvent. The coating composition can give a transparent and hard coating film having excellent boiling water resistance, heat cycle resistance and weatherability even under severe conditions.

Heat curable coating compositions comprising partially hydrolyzed

Method for the improvement of surface hardness of article by coating

A coating composition useful for improving the surface properties, such as surface hardness and chemical resistance, of plastic products, wooden products, metallic products, or the like, which comprises (A) silicon compounds partial hydrolyzates comprising a partial hydrolyzate of a tetraalkoxysilane and a partial hydrolyzate of an organic silicon compound of the formula: R.sub.n Si(OR').sub.4.sub.-n wherein R is a hydrocarbon group, R' is an alkyl and n is 1 or 2, and (B) an acrylic copolymer and an etherated methylolmelamine, which are dissolved in a solvent. The coating composition can give a transparent coating film having excellent hardness, water resistance, boiling water resistance, chemical resistance, heat cycle resistance and weatherability, and further antistatic properties onto the formed products.

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Niihama, Japan

Mikio Futagami