Patent ID: 8753442
Filing Date: 2014-06-17
Classification: C08L,C09D,C10C,D06N,E04D

Abstract:
1. A coating asphalt for use in roofing comprising: an asphalt component consisting essentially of a paving grade asphalt or a mixture of paving grade asphalts processed by partial blowing in the presence of a blowing catalyst to have an intermediate softening point below 190° F. (88° C.) and a penetration at 77° F. (25° C.) above 15 dmm said blowing catalyst comprising one of phosphoric acid and ferric chloride; and from about 0.5% to about 8% by weight of a wax having a melt point of at least about 90° C., wherein said coating asphalt has a softening point above 190° F. (88° C.), and a penetration at 77° F. (25° C.) between 15 and 22 dmm.