Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – Chemical modification of asphalt – tar – pitch or resin
Patent
1983-03-22
1984-12-25
Gantz, Delbert E.
Mineral oils: processes and products
Asphalts, tars, pitches and resins; making, treating and...
Chemical modification of asphalt, tar, pitch or resin
208 22, 4234472, 4234474, C10C 300, D01F 912, D01F 920
Patent
active
044902395
ABSTRACT:
A pitch which affords a carbon fiber having a high strength and a high elastic modulus is obtained by treating a pitch containing 5 to 35 weight percent of an optically anisotropic region with sulfur.
REFERENCES:
patent: 3317447 (1967-05-01), Black et al.
patent: 3345284 (1967-10-01), Ogdin
patent: 3810857 (1974-05-01), Garrigues et al.
patent: 4024076 (1977-05-01), Meijuke et al.
patent: 4199434 (1980-04-01), Sze et al.
La Chimica E. L'Industria, vol. 55, No. 5, May 1973, pp. 425-431, "Heavy Hydrocarbons and Sulfur: Reactions and Reaction Products" Bocca et al.
Hirose Takao
Kato Osamu
Takashima Hiroaki
Uemura Seiichi
Yamamoto Shunichi
Gantz Delbert E.
Maull Helane E.
Nippon Oil Company Limited
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