Laser-markable compositions
US8308860B2 · kind B2 · utility
4Cited by
2References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2007 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Aug 6, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A laser-markable composition comprises a marking component and an organic compound, wherein the organic compound absorbs laser radiation at 780 to 2000 nm and thereby causes the marking component to change color, and wherein the organic compound has an absorptivity ratio, A r, of at least 1.25, wherein the absorptivity ratio is defined as formula (I): wherein: Ap780-2000 nm is an absorbance peak in the wavelength region of 780 to 2000 nm; and Aave600-700 nm is the average absorbance in the wavelength region of 400 to 700 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.