| 摘要 |
<p>The invention relates to a partially synthetic petrolatum, used for the protection of the metal surfaces against corrosion and/or lubrication of the mechanisms operating at temperatures ranging from -40 C to +50 C. According to the invention, the petrolatum consists of 25...35% synthetic wax, up to 5% ceresine, 0.3...1% usual additives and 60...75% naphtenic oil, the percentage being expressed by weight.</p> |
