Process for coloring thermosetting resins
US4284729A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Aug 18, 1981 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G85/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is provided for coloring thermosetting resins, made by polyaddition reaction of a nucleophile with an electrophile, with a polymeric liquid reactive coloring agent suitable for incorporation in the resin with the formation of covalent bonds, said coloring agent having the formula: EQU R-(polymeric constituent-X).sub.n wherein R is an organic dyestuff radical; the polymeric constituent is selected from polyalkylene oxides and copolymers of polyalkylene oxides in which the alkylene moiety of the polymeric constituent contains 2 or more carbon atoms and such polyeric constituent has a molecular weight of from about 44 to about 1500; and n is an integer of from 1 to about 6; and X is selected from --OH, --NH.sub.2 and --SH, said coloring agent being added in an amount sufficient to provide coloration of said thermosetting resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.