| 摘要 |
<p>The compressing aid consists of particles of a Fischer-Tropsch synthetic saturated hydrocarbon wax having an average molecular formula of C48H98, an average molecular mass of about 700, a minimum congealing point of about 204.degree.F and an average particle size of about 10 microns. For greater ease and dispersion during blending of the ingredients, the wax particles may be coated with 0.1 to 1.0% by weight of a lubricant such as dimethyl polysiloxane, isopropyl myristate, lauryl lactate or ethylhexyl palmitate. As an alternative to using these lubricants, coating the surface of the wax with about 0.10-0.20% of a protein zein of corn gluten lubricates the fine wax and aids in its dispersion in the particle mixture. In many applications the vegetable protein lubricant is preferable because less pressure is needed to compress the mixture than with the lubricants noted above.</p> |
