Ink composition containing a blend of a polyester and an acrylic polymer
US4996252A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1988 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jul 28, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a novel blend of a water-dissipatable polyester material and an acrylic polymer. The acrylic polymer must be compatible with the polyester and can be optionally styrenated. The polyester is exemplified in having an acid component of from about 70 to about 84 mole % isophthalic acid and conversely from about 25 to about 16 mole % 5-sodiosulfoisophthalic acid, and having a glycol component of from about 45 to about 60 mole % diethylene glycol and conversely from about 55 to about 40 mole % 1,4-cyclohexanedimethanol or ethylene glycol or mixtures thereof. The polymer blends are useful for preparing ink compositions having improved block resistance and water resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.