The use of dialkyl fumarate-vinyl acetate copolymers as dewaxing aids
US4670130A · kind A · utility
5Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1984 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Mar 14, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G73/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers of dialkyl fumarate and vinyl acetate having Specific Viscosities of at least 2.5 at 2% polymer concentration in xylene at 40.degree. C., and wherein at least 50 wt. % of said alkyl groups are C.sub.20 to C.sub.24, are useful as dewaxing aids, particularly in propane dewaxing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.