Process for coloring polymer resins and products thereof
US6077927A · kind A · utility
2Cited by
17References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Oct 23, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2101/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of providing for manufacturing a colored polymer resin having the steps of: PA1 (a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene) substituent comprising from 2 to 200 alkylene oxide residues, bonded to each end of the disazo chromophore, the poly(oxyalkylene) substituent having a nucleophilic terminal group which is capable of reacting with at least a portion of the monomers; PA1 (b) providing conditions under which the monomers and disazo colorant polymerize to form a colored polymer resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.