| 摘要 |
PCT No. PCT/DE88/00351 Sec. 371 Date Jan. 26, 1989 Sec. 102(e) Date Jan. 26, 1989 PCT Filed Jun. 11, 1988 PCT Pub. No. WO88/10288 PCT Pub. Date Dec. 29, 1988.An electrically insulating coating is formed on a metallic surface by applying a film of an aqueous fluoride-free composition which contains a water-dilutable synthetic resin, a dispersed waxlike substance, an inorganic or organic pigment, a borate, an alkali metal hydroxide, ammonia or an organic amine for adjusting the pH to between 7 and 9, and drying the moist film at a temperature between 120 and 350 DEG C. |
