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CN101827903A 用于有锌和锌合金涂层的钢板的涂料组合物、使用所述涂料组合物形成涂层的方法以及具有由该方法形成的涂层的钢板 有权 转让

  • Patent Title: 用于有锌和锌合金涂层的钢板的涂料组合物、使用所述涂料组合物形成涂层的方法以及具有由该方法形成的涂层的钢板
  • Patent Title (English): Coating composition for steel sheets having zinc and zinc alloy coating layer, method for forming coating layer using the coating composition and steel sheet having the coating layer formed thereof
  • Application No.: CN200880111911.4
    Application Date: 2008-07-29
  • Publication No.: CN101827903A
    Publication Date: 2010-09-08
  • Inventor: 金泳根 , 朴河善 , 李相旻 , 千时烈 , 金龙云 , 李在隆
  • Applicant: POSCO公司
  • Applicant Address: 韩国庆尚北道
  • Assignee: POSCO公司
  • Current Assignee: 浦项股份有限公司
  • Current Assignee Address: 韩国庆尚北道
  • Agency: 北京北翔知识产权代理有限公司
  • Agent 钟守期; 唐铁军
  • Priority: 10-2007-0085448 2007.08.24 KR; 10-2007-0138044 2007.12.26 KR
  • International Application: PCT/KR2008/004420 2008.07.29
  • International Announcement: WO2009/028801 EN 2009.03.05
  • Date entered country: 2010-04-16
  • Main IPC: C09D143/02
  • IPC: C09D143/02
用于有锌和锌合金涂层的钢板的涂料组合物、使用所述涂料组合物形成涂层的方法以及具有由该方法形成的涂层的钢板
Abstract:
提供了一种能够形成涂覆膜的用于锌和锌合金涂覆的钢板的涂料组合物，所述涂覆膜不但具有优良性质例如粘附力、碱涂层去除性和润滑性，而且具有良好的外观；一种使用所述涂料组合物在钢板上形成涂覆膜的方法；以及一种具有根据该方法形成的涂覆膜的钢板。所述用于锌和锌合金涂覆的钢板的涂料组合物包含：1重量％-30重量％的次磷酸、0.1重量％-10重量％的锰、0.01重量％-5重量％的聚乙烯化合物、氧化锌及余量的水，如有需要，还包含不超过20重量％的醇；其中所包含的氧化锌为这样的含量，即当以0.1N NaOH对50ml(毫升)的所述涂料组合物进行中和及滴定时，用于中和滴定的NaOH的量不超过10.0ml(毫升)；并且所述涂料组合物中的游离酸的含量被调整至这样的量，即当以0.1N NaOH对50ml(毫升)的所述涂料组合物进行中和及滴定时，用于中和滴定的NaOH的量不超过10.0ml(毫升)。使用所述涂料组合物在所述钢板上形成的涂覆膜呈现优良的性质，例如润滑性、粘附力和涂层去除性，同时还具有良好的表面外观。
Abstract(English):

There is provided a coating composition for zinc- and zinc alloy-coated steel sheets capable of forming a coating film having a fine appearance as well as excellent properties such as adhesion, alkaline coating removal property and lubricating property, a method for forming a coating film on a steel sheet using the same, and a steel sheet having a coating film formed according to the method. The coating composition for zinc- and zinc alloy -coated steel sheets includes: 1 to 30% by weight of hypophosphorous add, 0.1 to 10% by weight of manganese, 0.01 to 5% by weight of a polyvinyl compound, zinc oxide and the balance of water, and further comprises 20% by weight or less of alcohol, when necessary, wherein the zinc oxide is included in such a content that, when 50 ml (milliliters) of the coating composition is neutralized and titrated with 0.1N NaOH, the NaOH used for the neutralization titration is present in an amount of 10.0 m# (milliliters) or less, and a content of free add in the coating composition is adjusted to such an amount that, when 50 ml (milliliters) of the coating composition is neutralized and titrated with 0.1N NaOH, the NaOH used for the neutralization titration is present in an amount of 10.0 m# (milliliters) or less. The coating film formed on the steel sheet using the coating composition shows excellent properties such as lubricating property, adhesion and coating removal property, and also has a fine surface appearance.

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