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    • 2. 发明授权
    • 유리전이온도가 높고 방청성이 우수한 이소시아네이트코아쉘 고무 변성 다관능 에폭시 수지와 그의 제조방법 및이를 포함하는 분체도료 조성물
    • 유리전이온도가높고방청성이우수한이소아아아이트코아쉘고무변성다관능에폭시수지와그의제조방법및이를포함하는분체도료조성물물
    • KR100934198B1
    • 2009-12-29
    • KR1020020088212
    • 2002-12-31
    • 주식회사 케이씨씨
    • 박지윤최승엽권오원이안섭
    • C09D163/10
    • PURPOSE: An isocyanate core-shell rubber modified multifunctional epoxy resin for a powered paint, its preparation method and a powdered paint composition containing the resin are provided to increase a glass transition temperature and to improve corrosion resistance and flexibility. CONSTITUTION: The method comprises the steps of dispersing 1-20 parts by weight of a core-shell rubber having a particle size distribution of 300-20,000 Angstrom to 100 parts by weight of a low molecular weight epoxy resin having a molecular weight of 350-400 to prepare a core-shell rubber modified epoxy resin; reacting 100 parts by weight of the core-shell rubber modified epoxy resin with 10-30 parts by weight of a novolac epoxy resin and 0-0.5 parts by weight of a catalyst to a novolac epoxy modified resin with improved functional groups; and reacting the novolac epoxy modified resin with 1-30 parts by weight of an isocyanate compound based on 100 parts by weight of the novolac epoxy modified resin and 0.01-0.5 parts by weight of a catalyst based on 100 parts by weight of the isocyanate compound, to obtain an isocyanate core-shell rubber modified multifunctional epoxy resin having a number average molecular weight of 500-2,000, an epoxy equivalence of 250-800 g/eq, a softening point of 90-130 deg.C and a viscosity of 10-40 poise (175 deg.C).
    • 目的:提供一种动力涂料用异氰酸酯核壳橡胶改性多官能环氧树脂及其制备方法和含有该树脂的粉末涂料组合物,以提高玻璃化转变温度并改善耐腐蚀性和挠性。 构成:该方法包括以下步骤:将100-20重量份的具有300-20,000埃颗粒尺寸分布的核 - 壳橡胶分散到100重量份的分子量为350-1000的低分子量环氧树脂中, 400制备核壳橡胶改性环氧树脂; 使100重量份核 - 壳橡胶改性环氧树脂与10-30重量份线性酚醛环氧树脂和0-0.5重量份催化剂反应,得到官能团改进的酚醛环氧改性树脂; 并且基于100重量份的线性酚醛环氧改性树脂和基于100重量份的异氰酸酯化合物0.01-0.5重量份的催化剂,使酚醛清漆环氧改性树脂与1-30重量份的异氰酸酯化合物反应 得到数均分子量为500〜2,000,环氧当量为250〜800g / eq,软化点为90〜130℃,粘度为10的异氰酸酯核壳橡胶改性多官能环氧树脂 -40泊(175℃)。