发明名称 |
SURFACE-TREATMENT METHOD FOR TIN-PLATED DRAWN AND IRONED CANS |
摘要 |
A surface which has excellent adhesivity to paint, good corrosion resistance, and low friction may be obtained on drawn and iron tin plated cans by spraying the can surface for a time between 5 and 60 seconds at a temperature between 40 and 60 DEG C with an aqueous treating liquid having a pH between 4 and 6 and comprising (i) orthophosphoric acid and/or condensed phosphoric acids and (ii) a concentration of at least 0.1 w/o of a water soluble oligomer according to general formula (I) wherein n is a number with a value between 10 and 30 and each of X and Y independently represents hydrogen or a group Z, wherein Z has a chemical composition conforming to general formula (II) wherein each of R1 and R2 is an alkyl or hydroxyalkyl group having from 1 to 5 carbon atoms, except that at least 25 % of the total of all the X and Y groups in the oligomer are Z rather than hydrogen; and drying the surface thus sprayed, optionally after having first rinsed the sprayed surface with water. |
申请公布号 |
WO9110756(A1) |
申请公布日期 |
1991.07.25 |
申请号 |
WO1991US00202 |
申请日期 |
1991.01.10 |
申请人 |
HENKEL CORPORATION |
发明人 |
TANAKA, SHIGEO;AOKI, TOMOYUKI;YOSHIDA, MASAYUKI |
分类号 |
C09D5/12;C09D5/08;C09D125/00;C09D125/18;C23C22/08;C23C22/23 |
主分类号 |
C09D5/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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