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    • 37. 发明授权
    • High temperature naphthol novolak resin
    • 高温萘酚酚醛清漆树脂
    • US4404357A
    • 1983-09-13
    • US374054
    • 1982-05-03
    • Paul TaylorMichael Gulla
    • Paul TaylorMichael Gulla
    • C08G8/04C08G8/24
    • C08G8/04
    • Novel resins are disclosed that are the reaction products of an aldehyde and an aromatic alcohol mixture of naphthol, preferably 1-naphthol, and a phenol. The molar ratio of the naphthol to the phenol in the reaction mixture can vary from about 20 to 1 to 1 to 20. The resins are formed by condensing the aldehyde with the aromatic alcohol mixture in the presence of an acid catalyst where the molar ratio of the aromatic alcohol to aldehyde is less than 1. The resins of the invention are characterized by melt temperature higher than the melt temperatures of conventional novolak resins.
    • 公开了萘酚,优选1-萘酚和苯酚的醛和芳族醇混合物的反应产物的新型树脂。 反应混合物中萘酚与苯酚的摩尔比可以在约20至1至1至20之间变化。该树脂通过在酸催化剂存在下将醛与芳族醇混合物缩合而形成,其中摩尔比 芳族醇与醛的摩尔比小于1.本发明的树脂的特征在于熔体温度高于常规酚醛清漆树脂的熔融温度。
    • 39. 发明授权
    • Pickling solution
    • 酸洗液
    • US3936316A
    • 1976-02-03
    • US310371
    • 1972-11-29
    • Michael Gulla
    • Michael Gulla
    • C23G1/02C09K13/06
    • C23G1/02
    • The invention is for a process and composition for pickling metals, especially iron based metals, prior to metal finishing. A hydrohalide acid pickling solution is used which solution is characterized by the addition of urea. The urea substantially reduces, even completely eliminates, the excessive liberation of noxious and corrosive hydrohalide acid fumes normally associated with such pickling operations. This is an advantage as it greatly reduces the cost of the pickling operation as the consumption of acid is dramatically reduced. Moreover, there is less injury to personnel and equipment contacted with said fumes. Finally, a metal surface treated with the pickling solution of the invention is improved as there is less pitting and the surface is more active to a metal depositing solution.
    • 本发明涉及在金属精加工之前酸洗金属,特别是铁基金属的方法和组合物。 使用氢卤酸浸酸溶液,其特征在于加入尿素。 尿素基本上减少,甚至完全消除了通常与这种酸洗操作相关的有毒和腐蚀性氢卤素酸烟雾的过度释放。 这是一个优点,因为大大降低了酸的消耗量,酸洗操作的成本。 此外,与所述烟雾接触的人员和设备的伤害较少。 最后,利用本发明的酸洗溶液处理的金属表面得到改善,因为较少的点蚀和表面对金属沉积溶液的活性更高。