Ultraviolet hardening type ink compositions with a temperature-sensitive color change property
US6008269A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Nov 18, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S522/909
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
[Problem] To provide ultraviolet hardening type ink compositions with a temperature-sensitive color change property, which has both the hardening property and the printing strength of UV ink and also has an excellent light resistance. [Solution] Ultraviolet hardening type ink compositions comprising microcapsules with a temperature-sensitive color change property and a photopolymerization initiator, wherein said microcapsules contain no ultraviolet absorber and have the mean diameter of 0.5-50 .mu.m whereas said photopolymerization initiator comprises at least one of the compounds selected from ace tophenone type compounds and benzophenone type compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.