Retarding skin formation on asphalt in hot storage

Details Retarding skin formation on asphalt in hot storage Retarding skin formation on asphalt in hot storage

1974-10-10

1976-05-11

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

106274, C08L 9500

Patent

active

039560015

ABSTRACT:
Surface hardening or skin formation on asphalts stored at temperatures in excess of 170.degree.C is inhibited by the addition of (a) dodecylphenoxypoly(ethyleneoxy)ethanol; (b) calcium petroleum sulfonate; (c) 2,6-ditertiarybutyl-p-phenol; or (d) 2,6-ditertiarybutyl-p-phenol in combination with stearic acid.

REFERENCES:
patent: 2954345 (1960-09-01), Filbey
patent: 3265661 (1966-08-01), Rocklin
patent: 3513005 (1970-05-01), Bradshaw et al.
patent: 3539370 (1970-11-01), Pitchford
patent: 3808020 (1974-04-01), Pitchford

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