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    • 3. 发明专利
    • Furan resin composition for casting mold manufacturing
    • 用于铸造模具制造的FURAN树脂组合物
    • JP2006070247A
    • 2006-03-16
    • JP2005208586
    • 2005-07-19
    • Kao Corp花王株式会社
    • SAWA MASUO
    • C08L71/14B22C1/22C08K5/13C08K5/1535C08K5/21
    • B22C1/224
    • PROBLEM TO BE SOLVED: To improve dissolvability and stability of urea of a furan resin composition for manufacturing a casting mold using the urea in order to reduce a formaldehyde concentration and to improve work environment.
      SOLUTION: The furan resin composition used for manufacturing the casting mold contains 1-10 wt% of urea which is not involved in condensation of the furan resin, and has pH (25°C) of 7-10. Furthermore, as a curing accelerator, a furan of which 2- and 5-positions are substituted with a hydroxymethyl group, a methoxymethyl group, or an ethoxymethyl group, or a phenol having a substituent which increases density of electric charge at an ortho or a para position is used in the resin composition. These are used as a binder in this casting mold manufacturing method.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提高用于制造使用尿素的铸模的呋喃树脂组合物的尿素的溶解性和稳定性,以降低甲醛浓度并改善工作环境。 解决方案:用于制造铸模的呋喃树脂组合物含有1-10重量%的不涉及呋喃树脂冷凝的尿素,并且pH(25℃)为7-10。 此外,作为固化促进剂,其2-和5-位被羟甲基,甲氧基甲基或乙氧基甲基取代的呋喃或具有增加邻位或 对位在树脂组合物中使用。 这些在这种铸模制造方法中用作粘合剂。 版权所有(C)2006,JPO&NCIPI
    • 8. 发明专利
    • Binder composition for casting mold
    • 用于铸造模具的粘合剂组合物
    • JPS6152955A
    • 1986-03-15
    • JP17444384
    • 1984-08-22
    • Kaou Kueekaa Kk
    • KAWAKATSU YASUYUKISAKAI MITSURU
    • C08L61/00B22C1/22C08L61/34
    • B22C1/224
    • PURPOSE:To decrease the staining of a pattern by a binder and to improve the productivity and quality of a casting mold by decreasing the content of furfuryl alcohol in the binder by mixing or reaction. CONSTITUTION:The furfuryl alcohol content in the gas curable binder to be used in the stage of producing the casting mold by using the furfuryl alcohol as an essential raw material and peroxide as an oxidizing agent and using sulfur dioxide is decreased to =1 aldehyde group in one molecule.
    • 目的:通过粘合剂降低图案的染色,通过混合或反应降低粘结剂中糠醇的含量,提高模具的生产率和质量。 构成:通过使用糠醇作为必需原料和过氧化物作为氧化剂并使用二氧化硫在生产铸模的阶段中使用的气态可固化粘合剂中的糠醇含量通过以下方式降低至<= 30重量% 单独的糠醇的缩聚或与其它组分混合或共缩合。 粘合剂原料中的糠醇含量与粘合剂中糠醇的含量之比为1:<= 0.6。 其它组分包括苯酚/醛,尿素,脲/醛缩聚产物,三聚氰胺,三聚氰胺/醛缩聚产物,酮/醛缩聚产物,芳族缩聚产物中的至少一种苯酚,缩聚产物。 烃/醛和化合物 对比 在一个分子中至少≥1个醛基。