Process for producing ORI control additives
US5147414A · kind A · utility
11Cited by
13References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1989 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Aug 3, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/2387
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improvement in a method of producing an ORI control additive which is the reaction product of a polybutenyl succinic anhydride and a polyoxyalkylene diamine, wherein the improvement comprises reacting solvent free the anhydride and diamine at an increased temperature and monitoring the absorbancy of the reaction product to determine the degree of reaction completion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.