Polyester/acrylic hybrid latexes for printing inks with improved rewettability
US5912281A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1997 |
| Grant date | Jun 15, 1999 |
| Priority date | — |
| Expiry date | Jul 14, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous-dispersion comprising a polyester (A) having repeat units from at least one dicarboxylic acid, at least one difunctional sulfomonomer containing at least one metal sulfonate group attached to an aromatic nucleus wherein said functional groups are carboxyl or hydroxyl, and at least one difunctional glycol; and a polymer (B) having repeat units from styrene or one or more derivatives of styrene; a hydroxyalkyl(meth)-acrylate; and a carboxyl group containing monomer selected from methacrylic acid, acrylic acid, itaconic acid and mixtures thereof. Polymer (B) is formed from monomers polymerized in the presence of an aqueous dispersion of polyester (A). The aqueous dispersion may be used in various coatings and inks having excellent water resistance, alkaline resistance, and redispersibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.