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    • 9. 发明授权
    • Primer composition
    • 底漆组成
    • US4960809A
    • 1990-10-02
    • US278593
    • 1988-12-01
    • Masaaki YamayaKazuharu SatoMasayuki Takahashi
    • Masaaki YamayaKazuharu SatoMasayuki Takahashi
    • C09J5/00C08J7/04C09D133/12C09D143/04C09D183/04C09J5/02
    • C09D133/12C09D143/04
    • The primer composition of the invention is particularly useful as an undercoating composition for a protective overcoating formed with a silicone-based coating composition containing a colloidal silica powder in respect of the excellent adhesion, heat resistance, resistance against hot water and weatherability of the overcoating layer. The primer composition essentially comprises two components including (a) 100 parts by weight of a copolymer of a monomer mixture composed of (a-1) from 2 to 50% by weight of an ethylenically unsaturated monomeric compound having, in a molecule, an alkoxysilyl group and (a-2) from 98 to 50% by weight of an ethylenically unsaturated monomeric compound free from alkoxysilyl groups and copolymerizable with the monomeric compound (a-1); and (b) from 5 to 300 parts by weight of an amidated product obtained by the reaction of a halide, anhydride or isopropenyl ester of a carboxylic acid and a product obtained by the reaction of an amino group-containing alkoxysilane compound, an epoxy group-containing alkoxysilane compound and a silylating agent.
    • 本发明的底漆组合物特别可用作在含有胶体二氧化硅粉末的硅氧烷基涂料组合物上形成的保护性外涂层的底漆组合物,其优异的粘合性,耐热性,耐热水性和外涂层的耐候性 。 底漆组合物基本上包含两种组分,包括(a)100份(重量)由(a-1)2〜50重量%的烯属不饱和单体化合物组成的单体混合物的共聚物,所述烯键式不饱和单体化合物在分子中具有烷氧基甲硅烷基 和(a-2)98〜50重量%的不含烷氧基甲硅烷基并可与单体化合物(a-1)共聚的烯属不饱和单体化合物; 和(b)5〜300重量份通过羧酸的卤化物,酸酐或异丙烯酯与通过含氨基的烷氧基硅烷化合物反应得到的产物,环氧基 的烷氧基硅烷化合物和甲硅烷基化剂。