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    • 85. 发明授权
    • Thermosetting acrylic resin powder coating compositions
    • 热固性丙烯酸树脂粉末涂料组合物
    • US4281076A
    • 1981-07-28
    • US026802
    • 1979-04-03
    • Masaaki Kamimura
    • Masaaki Kamimura
    • C08G18/24C08G18/62C08L37/00C08L75/04
    • C08G18/6237C08G18/24C08G2150/20Y10S525/934
    • The present invention relates to a thermosetting acrylic resin powder coating composition and comprises specified four components (A) to (D), said four components (A) to (D) being:(A) a mixture of a glycidyl-containing acrylic resin and a hydroxyl-containing acrylic resin, or a glycidyl- and hydroxyl-containing acrylic resin,(B) a blocked isocyanate compound having a melting point of 60.degree. to 140.degree. C. and solid at room temperature,(C) an aliphatic dibasic acid or anhydride thereof, and(D) at least one tin compound represented by the formula SnO.sub.2, R.sub.2 SnO, R.sub.2 SnX.sub.2, R.sub.2 Sn(OCOR').sub.2, ##STR1## R.sub.3 SnX, R.sub.3 Sn-O-SnR.sub.3, ##STR2## or R.sub.4 Sn wherein R is phenyl or alkyl having 1 to 18 carbon atoms, X is halogen, alkoxyl having 1 to 18 carbon atoms or hydroxyl, R' is alkyl or alkenyl having 1 to 18 carbon atoms and n is an integer of 1 to 5.The coating composition comprising the specified four components (A) to (D) can give coatings which have outstanding surface smoothness even when less that 100.mu. in thickness.
    • 本发明涉及一种热固性丙烯酸树脂粉末涂料组合物,其包含特定的四种组分(A)至(D),所述四种组分(A)至(D)为:(A)含缩水甘油基的丙烯酸树脂和 含羟基的丙烯酸树脂或含缩水甘油基和羟基的丙烯酸树脂,(B)熔点为60〜140℃的封端异氰酸酯化合物,在室温下为固体,(C)脂肪族二元酸 或其酸酐,和(D)至少一种由式SnO 2,R 2 SnO,R 2 SnX 2,R 2 Sn(OCOR')2,R 3 SnX,R 3 Sn-O-SnR 3,R 3 SnX或R 4 Sn表示的锡化合物,其中R是苯基 或具有1至18个碳原子的烷基,X为卤素,具有1至18个碳原子的烷氧基或羟基,R'为具有1至18个碳原子的烷基或烯基,n为1至5的整数。该涂料组合物包含 规定的四个组分(A)至(D)可以赋予具有优异表面平滑度的涂层,即使少于100μm, n厚度。