C - Chemistry – Metallurgy – 10 – C
Patent
C - Chemistry, Metallurgy
10
C
196/41
C10C 3/00 (2006.01) C10G 7/00 (2006.01) C10G 53/06 (2006.01) C10G 67/04 (2006.01)
Patent
CA 1072035
ABSTRACT OF THE DISCLOSURE The production of normal and premium lube grade blending stocks of 100, 300 and 700 second neutral material along with high-boiling by-product material for the manufacture of asphalts is improved by using a low pressure vacuum tower provided with an overflash separation in the tower bottom from resid.
232246
Pagen Charles A.
Petrucco Richard J.
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