Process for preparing coating binders from vegetable oil material
US4419139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1982 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Mar 24, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/904
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Vegetable oils or vegetable oil alkyds are emulsified in aqueous medium by means of a suitable emulsifying agent providing particles of oil or alkyd encapsulated in an oxygen permeable layer of emulsifying agent. The emulsified oil or alkyd particles are reduced to a predetermined size, and the emulsion is subjected to an oxygen-containing gas, preferably at elevated pressures, to effect autoxidation by cross-linking between olefin groups of unsaturated fatty acid moieties of the vegetable oils. Autoxidation is continued until the emulsified particles gel or nearly gel. When applied to a surface and exposed to air, the particles coalesce into a continuous film, and further oxidation and drying of the emulsion occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.