Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Patent
1975-11-14
1977-06-28
Hayes, Lorenzo B.
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
106279, 106281R, 106282, 208 44, 260 28R, C08L 9500
Patent
active
040323552
ABSTRACT:
Novel bituminous compositions are disclosed which are characterized by elevated Ring and Ball softening points ranging up to about 200.degree. C. They are prepared by the treatment of molten bitumen, in the absence of solvent, with a combination of: (a) an amine selected from the class consisting of an aliphatic amine having from 10 to 20 carbon atoms, and aromatic polyamines; and (b) an isocyanate selected from the class consisting of aliphatic isocyanates having from 10 to 20 carbon atoms, and aromatic polyisocyanates; provided that in any instance in which the amine component is aliphatic, then the isocyanate component is aromatic. The combined weight of (a) and (b) present in the bitumen, is from about 1 to about 10 weight percent based on the weight of bitumen. The bituminous compositions are useful in paving, and roofing applications, especially in countries which experience hot climates.
REFERENCES:
patent: 3182032 (1965-05-01), Charlton et al.
patent: 3615801 (1971-10-01), Marklow et al.
patent: 3615802 (1971-10-01), Betty
patent: 3796583 (1974-03-01), Bungs et al.
McLaughlin Alexander
Sayigh Adnan A. R.
Firth Denis A.
Hayes Lorenzo B.
Rose James S.
The Upjohn Company
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