Composition for laser marking
US6127475A · kind A · utility
21Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Sep 25, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A resin composition with laser marking properties comprises a polyester thermoplastic resin, a sufficient amount of channel black carbon pigment for forming a dark background coloration wherein said channel black carbon pigment decomposes in laser struck areas whereby light colored markings are obtained on the dark background.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.