Patent ID: 9688882
Date: 2017-06-27
CPC Classifications: C08K,C08L,C09D,E04D

Claim:
1. A thermally stable shingle coating composition for making asphalt-coated shingles, the thermally stable single coating composition comprising: an over-blown paving grade asphalt having a first penetration value that is at or below 15 dmm and a first softening point that is at least 210° F.; and an additive included in an amount from 8 to 20 wt. based on the total weight of the shingle coating composition, wherein the shingle coating composition has a second softening point that is less than 230° F. and a second penetration value that is between 15 and 20 dmm, wherein the additive comprises a vegetable oil selected from the group consisting of corn oil, castor oil, soybean oil, coconut oil, and tall oil, wherein the shingle coating composition is thermally stable at processing temperatures of at least 450° F., and wherein the vegetable oil is modified by oxidation or thermolysis to a molecular weight of 900 to 5000.