Diamidediurethanes and hot-melt printing therewith
US5881648A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Apr 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S101/43
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Solid compositions containing diamidediurethanes are useful as components of hot-melt inks. Diamidiurethanes may be prepared by reaction of a hydroxycarboxylic acid and/or lactone with either (1) monoamine and diisocyanate or (2) diamine and monoisocyanate. Alternatively, the diamidediurethane may be prepared by reacting a non-hydric carboxylic acid and/or anhydride with an hydroxyamine and a dfisocyanate. The reactant identity and stoichiometry, as well as the reaction conditions, may be tailored to optimize the formation of diamidediurethane in preference to high molecular weight oligomers. The hot-melt inks may be used in ink jet, flexographic, gravure and intaglio printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.