Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Patent
1995-04-20
1996-12-17
Brunsman, David
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
106275, 106668, 106725, 252353, C09D 108, C09D19500, C08L 9500
Patent
active
055849202
ABSTRACT:
A process is described for preparing a water-soluble sulphonated dispersant from a petroleum hydrocracking residue comprising: contacting a petroleum hydrocracking residue boiling above 524.degree. C. with concentrated sulphuric acid, oleum or sulphur trioxide to form a sulphonated mixture containing water soluble and water insoluble products, and separating the water soluble sulphonated product from the mixture. The mixture of water soluble and water insoluble sulphonated products is neutralized with alkali and evaporated to dryness, after which the dried mixture is extracted with alcohol to leave a water soluble product. The product can be used as a water reducer or superplasticizer in concrete.
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Clelland Ian F.
Farnand Brian A.
Houde, Jr. Jean
Mailvaganam Noel P.
Sawatzky Henry
Brunsman David
Natural Resources - Canada
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