Burgess, Ryan and Wayne
Process for improving the properties of bituminous products and an improved cast asphalt
 A process for improving the properties of a bitumen which comprises mixing the bitumen with from about 5 to 20% by weight based on the bitumen, of a polyolefin wax at an elevated temperature for a period of time necessary to form a homogeneous mixture. The modified bitumen is particularly useful as a binder in asphalt to be used for casting. 
Elf Union
C Y
C08L Y10S
inventional additional
Germain Paul
Hagenbach Maldonado