| 摘要 |
Fully oxidized cutback asphalts suitable for application in roofing, waterproofing, and sealing applications in all weather conditions, including as mastics and other sealants. Compositions according to the invention comprise unprecedented proportions of solids and asphalts yet remain workable to temperatures as low as 20 DEG F. or below. In addition to fully-oxidized roofing-grade asphalts, preferred compositions according to the invention also comprise hydrophobic agents selected from the group comprising fatty acids and amine compounds and may be applied in rain or other wet conditions, and include polybutene to control the glass transition temperature of the completed mastic and thereby permit application of the composition at extremely low temperatures. Preferred embodiments optionally also comprise fillers such as cellulose fibers, diatomaceous earth, limestone, and asbestos for various advantageous purposes.
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