Heavy fuel-oil compositions having an improved stability under storage conditions
US4264334A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 19, 1979 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Jul 19, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/2362
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Heavy fuel-oil composition of improved stability under storage conditions, comprising a petroleum residue obtained from a straight run distillation, a vacuum distillation or a viscosity reduction of petroleum materials, a diluent such as a steam-cracking residue, a viscosity reduction gas oil or a mixture thereof, and a minor proportion of a sequenced copolymer formed of two polymeric sequences (A) and (B) wherein sequence (A) is obtained by polymerization of one or more conjugated diolefins such as 1,3-butadiene and isoprene and sequence (B) is obtained by polymerization of acrylonitrile or an alkylacrylonitrile such as methacrylonitrile, said sequenced copolymer having an average molecular weight by number of from 1,000 to 20,000.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.