WATER-DISPERSIBLE SILICONE RESIN
PROBLEM TO BE SOLVED: To provide an aqueous dispersion of a silicone resin, which does not contain: volatile compounds; and organic surfactants that lead to poor properties when a coating is subjected to heat or sunlight.SOLUTION: This invention relates to a method for preparing an aqueous dispersio...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an aqueous dispersion of a silicone resin, which does not contain: volatile compounds; and organic surfactants that lead to poor properties when a coating is subjected to heat or sunlight.SOLUTION: This invention relates to a method for preparing an aqueous dispersion of a silicone resin, comprising the steps of: reacting a mixture containing an alkylalkoxysilane and a cationic alkoxysilane to form a self-dispersing silicone resin; and subsequently mixing the silicone resin with water to form the dispersion. The resulting dispersions are useful for forming coatings on various substrates and are essentially free of co-surfactants or volatile organic solvents.
【課題】揮発性有機溶媒や、塗膜が熱または太陽光にさらされたときに弱い特性につながる原因となる有機界面活性剤を含まないシリコーン樹脂水分散体の提供。【解決手段】アルキルアルコキシシランとカチオン性アルコキシシランとを含む混合物を反応させ、自己分散したシリコーン樹脂を形成する工程と、続くシリコーン樹脂と水とを混合して分散体を形成する工程によるシリコーン樹脂の水分散体の製造方法。その結果としてもたらされる分散体は、様々な基板上に塗膜を形成するのに有用であり、実質的に共界面活性剤又は揮発性有機溶媒を含まない水分散型シリコーン樹脂。【選択図】なし |
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