Patent ID: 11926738
Assignee: GARLAND INDUSTRIES, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  E  Y | IPC C  E

Claim 0:
1. A method for forming an actively modified polymer-modified bitumen material, said method comprises:
providing 25-75 wt. % of a first component comprising bitumen, coal tar, or combinations thereof;
providing 1-49% wt. % of a second component comprising polyisocyanate compound and polyol; and,
adding said second component to said first component to form a mixture and to allow said second component to react with hydroxyl functional groups of said first component to form said bitumen material; and
wherein a content of said polyol in said second component creating a NCO/OH equivalent ratio of 2:1 to 15:1.