2656. ------. [PIER, M., AND CHRISTMANN, F.] [Lubricants.] German Patent Appl. —, filed Mar. 8, 1941; APC 382,394.

A relatively small amount of aromatic polymer (mol. wt. >1,000), such as styrene, alkyl-styrene, cumarone or indene is catalytically interpolymerized with unsaturated products from cracking, dehydrogenation, or catalytic hydrogenation of CO.