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    • 18. 发明授权
    • Modified aminoplast crosslinkers and powder coating compositions containing such crosslinkers
    • 含有这种交联剂的改性氨基塑料交联剂和粉末涂料组合物
    • US06635724B2
    • 2003-10-21
    • US09918788
    • 2001-07-31
    • Ronald R. AmbroseAnthony M. ChasserShengkui Hu
    • Ronald R. AmbroseAnthony M. ChasserShengkui Hu
    • C08G1240
    • C08G12/42C08G12/428C08G2150/20C08L61/28C08L61/32C09D161/32Y10T428/31725
    • A crosslinking agent is provided which is an ungelled reaction product of (a) an aminoplast resin and (b) a compound having active hydrogen groups reactive with the aminoplast resin (a) such that the crosslinking agent is essentially free of functional groups reactive with aminoplast resin and has a glass transition temperature of at least 10° C. Also provided is a method for preparing the crosslinking agent. Further provided is a curable powder coating composition including (A) a polymer having a glass transition temperature of at least 30° C. containing reactive functional groups and (B) the previously described crosslinking agent. Additionally provided is a multilayer composite coating composition including a base coat deposited from a film-forming composition and a top coat over the base coat deposited from the previously described powder coating composition. Coated substrates are also provided.
    • 提供了一种交联剂,其是(a)氨基塑料树脂和(b)具有与氨基塑料树脂(a)反应的活性氢基团的化合物的未凝胶化反应产物,使得交联剂基本上不含与氨基塑料反应的官能团 并且玻璃化转变温度至少为10℃。还提供了制备交联剂的方法。 还提供了一种可固化粉末涂料组合物,其包含(A)含有反应性官能团的玻璃化转变温度至少为30℃的聚合物和(B)前述交联剂。 另外提供了一种多层复合涂料组合物,其包含从成膜组合物沉积的底涂层和由前述粉末涂料组合物沉积的底涂层上的顶涂层。 还提供涂覆的基材。
    • 19. 发明授权
    • Aminoplast-based crosslinkers and powder coating compositions containing such crosslinkers
    • 含有氨基塑料的交联剂和含有这种交联剂的粉末涂料组合物
    • US06500545B1
    • 2002-12-31
    • US09666175
    • 2000-09-21
    • Ronald R. AmbroseAnthony M. ChasserShengkui HuJohn R. SchneiderJackie L. Smith
    • Ronald R. AmbroseAnthony M. ChasserShengkui HuJohn R. SchneiderJackie L. Smith
    • B32B2738
    • C09D167/00C08G12/427C08G14/06C08G14/12C08L61/28C08L61/32C08L61/34C09D161/32C09D161/34C09D163/00C09D175/04Y10T428/31511Y10T428/31529Y10T428/31551Y10T428/31681Y10T428/31688Y10T428/31699Y10T428/31942C08L2666/16C08L61/20
    • The present invention provides a crosslinking agent having reactive benzoxazine groups which is the ungelled reaction product of (a) at least one mono-hydroxy aromatic compound and (b) at least one aminotriazine compound having one or less non-alkylated NH group present in a molar ratio of reactant (a) to reactant (b) ranging from 1.0 to 3.0: 1.0, provided that where reactant (a) is a single ring monohydroxy aromatic compound, the molar ratio of reactant (a) to reactant (b) ranges from 1.0 to 1.8:1.0 and from 2.2 to 3.0:1.0. The crosslinking agent is essentially free of hydroxyl functionality and has a glass transition temperature of at least 25° C. The present invention is further directed to a method for preparing the above-described crosslinking agent. Also provided is a curable powder coating composition comprising a solid particulate, film-forming mixture of (A) a polymer having functional groups reactive with aminotriazine and/or benzoxazine groups, the polymer having a glass transition temperature of at least 30° C.; and (B) the previously described crosslinking agent. Multilayer composite coating compositions are also provided including a base coat deposited from a film-forming composition and a topcoat over the base coat. The topcoat is deposited from the curable powder coating composition described above. The present invention further provides coated substrates.
    • 本发明提供具有反应性苯并恶嗪基团的交联剂,其是(a)至少一种单羟基芳族化合物和(b)至少一种具有一个或多个非烷基化NH基团的氨基三嗪化合物的未凝胶化反应产物, 反应物(a)与反应物(b)的摩尔比为1.0-3.0:1.0,条件是当反应物(a)为单环一羟基芳族化合物时,反应物(a)与反应物(b)的摩尔比范围为 1.0至1.8:1.0和2.2至3.0:1.0。 交联剂基本上不含羟基官能团,玻璃化转变温度至少为25℃。本发明还涉及制备上述交联剂的方法。 还提供了一种可固化粉末涂料组合物,其包含(A)具有与氨基三嗪和/或苯并恶嗪基反应的官能团的聚合物的固体颗粒,成膜混合物,所述聚合物具有至少30℃的玻璃化转变温度; 和(B)前述交联剂。 还提供了多层复合涂料组合物,包括从成膜组合物沉积的底涂层和底涂层上的顶涂层。 从上述可固化粉末涂料组合物沉积面漆。 本发明还提供涂覆的基材。
    • 20. 发明授权
    • Aminoplast-based crosslinkers and powder coating compositions containing such crosslinkers
    • 含有氨基塑料的交联剂和含有这种交联剂的粉末涂料组合物
    • US06441103B1
    • 2002-08-27
    • US09666265
    • 2000-09-21
    • Ronald R. AmbroseAnthony M. ChasserShengkui HuJohn R. SchneiderJackie L. Smith
    • Ronald R. AmbroseAnthony M. ChasserShengkui HuJohn R. SchneiderJackie L. Smith
    • C08L7506
    • C09D5/033C08G12/20C08G12/30C08G12/42C08G12/427C08G12/428C08G18/2825C08G18/3851C08G18/423C08G18/71C08G18/792C08G18/8064C08G2150/20C08K5/0025C08K5/34922C08L61/28C08L61/32C09D161/32C09D167/00Y10S524/904Y10S525/934C08L2666/20C08L61/20
    • Two types of aminotriazine-based crosslinking agents are provided. Crosslinking agent I includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyester polyol, and (2) a mono-isocyanate. The crosslinking agent I is essentially free of urethane NH functionality and has a glass transition temperature of at least 25° C. Crosslinking agent II includes the ungelled reaction product of (A) a reactive urethane group-containing reaction product and (B) an aminotriazine compound having one or less non-alkylated NH bond per triazine ring. The reactive urethane group-containing reaction product (A) is the reaction product of (1) a polyisocyanate and (2) a monohydric capping agent. The crosslinking agent II is essentially free of urethane N—H functionality and has a glass transition temperature of at least 10° C. Methods for preparing crosslinking agents I and II are also provided. Further provided is a curable composition of a film-forming polymer having reactive functional groups and the previously described crosslinking agent II. Also provided are powder coating compositions which each include a solid particulate mixture of a reactive group-containing polymer having a Tg of at least 30° C and the previously described crosslinking agents I or II. Multilayer composite coating compositions and coated substrates are also provided.
    • 提供了两种类型的氨基三嗪类交联剂。 交联剂I包括(A)含有反应性氨基甲酸酯基的反应产物和(B)具有每个三嗪环具有一个或多个非烷基化NH键的氨基三嗪化合物的未凝胶化反应产物。 反应性氨基甲酸酯基反应产物(A)是(1)聚酯多元醇和(2)单异氰酸酯的反应产物。 交联剂I基本上不含氨基甲酸酯官能团,玻璃化转变温度至少为25℃。交联剂II包括(A)反应性氨基甲酸酯基反应产物和(B)氨基三嗪的未凝胶化反应产物 每个三嗪环具有一个或多个非烷基化NH键的化合物。 反应性氨基甲酸酯基反应产物(A)是(1)多异氰酸酯与(2)一羟基封端剂的反应产物。 交联剂II基本上不含氨基甲酸酯N-H官能团,玻璃化转变温度至少为10℃。还提供了制备交联剂I和II的方法。 还提供了具有反应性官能团的成膜聚合物和前述交联剂II的可固化组合物。 还提供了粉末涂料组合物,其各自包含Tg至少为30℃的反应性基团聚合物和前述交联剂I或II的固体颗粒混合物。 还提供了多层复合涂层组合物和涂覆的基底。