A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WATER-BASED COATING COMPOSITION AND BUILDING MATERIAL
To provide a water-based coating composition which is excellent in coating stability, such as circulation stability, and capable of forming a coating film with good ink fixability.SOLUTION: There is provided a water-based coating composition comprising a coating film forming resin (A) and fine particles (B). The coating film-forming resin (A) contains an acrylic resin emulsion (A1), and the acrylic resin emulsion (A1) has a core part having a glass transition temperature of less than 15°C and a shell part having a glass transition temperature of 25°C or higher. The fine particles (B) comprise fine particles (B1), fine particles (B2), and fine particles (B3). (B1) contains calcium carbonate and has an average particle diameter of 1 μm or more and 5 μm or less, an oil absorption of 60 mL/100 g or more, and a bulk specific gravity of 0.20 g/cm3 or more. (B2) has an average particle diameter of less than 1 μm and a bulk specific gravity of 0.20 g/cm3 or more. (B3) contains silica and has an oil absorption of 60 mL/100 g or more, and a bulk specific gravity of 0.15 g/cm3 or less.SELECTED DRAWING: None
【課題】塗料安定性、例えば循環安定性に優れ、且つインク定着性の良好な塗膜を形成できる水性塗料組成物の提供を目的とする。【解決手段】塗膜形成樹脂（Ａ）及び微粒子（Ｂ）を含み、塗膜形成樹脂（Ａ）は、アクリル樹脂エマルション（Ａ１）を含み、アクリル樹脂エマルション（Ａ１）は、ガラス転移温度が１５℃未満であるコア部と、ガラス転移温度が２５℃以上であるシェル部とを有し、微粒子（Ｂ）は、微粒子（Ｂ１）、微粒子（Ｂ２）及び微粒子（Ｂ３）を含み、（Ｂ１）は、炭酸カルシウムを含み、平均粒子径１μｍ以上５μｍ以下であり、吸油量６０ｍＬ／１００ｇ以上であり、かさ比重０．２０ｇ／ｃｍ３以上であり、（Ｂ２）は、平均粒子径１μｍ未満であり、かさ比重０．２０ｇ／ｃｍ３以上であり、（Ｂ３）は、シリカを含み、吸油量６０ｍＬ／１００ｇ以上であり、かさ比重０．１５ｇ／ｃｍ３以下である、水性塗料組成物。【選択図】なし
WATER-BASED COATING COMPOSITION AND BUILDING MATERIAL
To provide a water-based coating composition which is excellent in coating stability, such as circulation stability, and capable of forming a coating film with good ink fixability.SOLUTION: There is provided a water-based coating composition comprising a coating film forming resin (A) and fine particles (B). The coating film-forming resin (A) contains an acrylic resin emulsion (A1), and the acrylic resin emulsion (A1) has a core part having a glass transition temperature of less than 15°C and a shell part having a glass transition temperature of 25°C or higher. The fine particles (B) comprise fine particles (B1), fine particles (B2), and fine particles (B3). (B1) contains calcium carbonate and has an average particle diameter of 1 μm or more and 5 μm or less, an oil absorption of 60 mL/100 g or more, and a bulk specific gravity of 0.20 g/cm3 or more. (B2) has an average particle diameter of less than 1 μm and a bulk specific gravity of 0.20 g/cm3 or more. (B3) contains silica and has an oil absorption of 60 mL/100 g or more, and a bulk specific gravity of 0.15 g/cm3 or less.SELECTED DRAWING: None
【課題】塗料安定性、例えば循環安定性に優れ、且つインク定着性の良好な塗膜を形成できる水性塗料組成物の提供を目的とする。【解決手段】塗膜形成樹脂（Ａ）及び微粒子（Ｂ）を含み、塗膜形成樹脂（Ａ）は、アクリル樹脂エマルション（Ａ１）を含み、アクリル樹脂エマルション（Ａ１）は、ガラス転移温度が１５℃未満であるコア部と、ガラス転移温度が２５℃以上であるシェル部とを有し、微粒子（Ｂ）は、微粒子（Ｂ１）、微粒子（Ｂ２）及び微粒子（Ｂ３）を含み、（Ｂ１）は、炭酸カルシウムを含み、平均粒子径１μｍ以上５μｍ以下であり、吸油量６０ｍＬ／１００ｇ以上であり、かさ比重０．２０ｇ／ｃｍ３以上であり、（Ｂ２）は、平均粒子径１μｍ未満であり、かさ比重０．２０ｇ／ｃｍ３以上であり、（Ｂ３）は、シリカを含み、吸油量６０ｍＬ／１００ｇ以上であり、かさ比重０．１５ｇ／ｃｍ３以下である、水性塗料組成物。【選択図】なし
WATER-BASED COATING COMPOSITION AND BUILDING MATERIAL
水性塗料組成物及び建築材料
GODAI YUTAKA (author) / KAKIMOTO NOBUO (author) / KURATA TORU (author) / KIMURA NAOTO (author)
2023-07-10
Patent
Electronic Resource
Japanese
IPC:
C09D
Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke
,
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS
/
B41M
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
,
Druck-, Vervielfältigungs-, Markierungs- oder Kopierverfahren
/
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
,
Ausbau von Bauwerken, z.B. Treppen, Fußböden
AQUEOUS WATER-REPELLENT COATING COMPOSITION AND INORGANIC BUILDING MATERIAL WITH CURED COATING FILM
| European Patent Office | 2023
| European Patent Office | 2023