| 摘要 |
<p>PCT No. PCT/CH84/00111 Sec. 371 Date Mar. 12, 1985 Sec. 102(e) Date Mar. 12, 1985 PCT Filed Jul. 11, 1984 PCT Pub. No. WO85/00542 PCT Pub. Date Feb. 14, 1985.For protecting the surface of a soldering bath a covering means is used which comprises two phases (3,4), which are placed one on top of the other, are not soluble in each other and are liquid at the soldering temperature. The bottom phase (3) is produced by spreading over the top phase (4), which consists of a liquid synthetic polyalphaolefin, a powder of a chemically active component of sebacic acid and/or suberic acid which is solid at room temperature and liquid at the soldering temperature.</p> |
