Process for the manufacture of modified natural resin products
US3935145A · kind A · utility
10Cited by
10References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1973 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Mar 26, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J193/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the manufacture of a modified natural resin product wherein (a) a natural resin is reacted with (b) at least one ethylenically unsaturated monomer capable of being added to a natural resin, having from 2 to 12 carbon atoms and being free from carboxylic groups and anhydride groups, and (c) and more than 5%, referred to the weight of the natural resin, of an .alpha.,.beta.-olefinically unsaturated carboxylic acid or a derivative thereof yielding carboxylic groups under the reaction conditions. The invention is also concerned with resinous compositions, particularly adhesives and printing inks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.