Mineral oils: processes and products – Products and compositions – Asphalts – tars – pitches and resins
Patent
1986-04-14
1989-04-04
Sneed, H. M. S.
Mineral oils: processes and products
Products and compositions
Asphalts, tars, pitches and resins
208 22, 524 62, 524 69, 525 545, 527500, 1062731, 1062844, 1062811, C08L 9500, C10C 100
Patent
active
048183679
ABSTRACT:
An asphalt composition containing an asphalt, a copolymer of an olefin with an anhydride or a nitrile, and an unsaturated elastomer having at least two terminal groups each with an active hydrogen, a halogen, an epoxy oxygen or a cyanocarbon. The composition may be prepared by copolymerizing an olefin with an anhydride or a nitrile in the presence of a free radical initiator, and thereafter mixing the copolymer with the asphalt and elastomer. The copolymer may be mixed first with a petroleum oil, then with the elastomer and lastly with the asphalt. The copolymer may be a polyanhydride from maleic anhydride and 1-octadecene and the elastomer may be a hydroxy-terminated polybutadiene.
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Brochure of Chevron Chemical Company on Chevron/Gulf Product PA-18.
J. H. Diamond Company
Myers Helane
Sneed H. M. S.
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