Polyarylalkane oligomer compositions and process for their manufacture
US4956120A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1988 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Jul 1, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2984
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Polyarylalkane oligomer compositions containing essentially of a mixture of isomers of benzylcumene and its higher homologues and a mixture of isomers of bis(isopropylphenyl)phenylmethane; the method of making such compositions by first reacting chlorine with toluene, xylene, or a mixture of toluene and xylene in the presence of a radical generator, removing the unreacted toluene and/or xylene, and then subjecting the reaction product to the action of an inorganic halide or of an inorganic acid in the presence of a benzene-related compound; and microcapsules containing color-forming material wherein the compositions are used as solvents for the color-forming material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.