Modified natural-resin acid esters, processes for their preparation, and their use as binder resins in printing inks

US5698668A · kind A · utility

Assignee

• Vianova Resins AG · DE

Inventor

• Albert Bender · Mainz, DE

Key dates

• Filing date: Jun 3, 1996
• Grant date: Dec 16, 1997
• Expiry date: Jun 3, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/10
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Toluene-soluble modified natural-resin acid esters which can be prepared by reacting at least one compound from each of the component groups: A) natural resins or natural-resin acids; B) .alpha.,.beta.-ethylenically unsaturated carboxylic acids or their anhydrides; C) phenols which are polyfunctional with respect to oxo compounds; D) aldehydes or aldehyde acetals; E) alcohols having at least two hydroxyl groups; and, if desired, further compounds from the substance groups: F) fatty acids or fatty acid esters; G) ethylenically unsaturated monomers; H) ethylenically unsaturated hydrocarbon resins in the presence of: I) monovalent or divalent metal compounds or mixtures thereof at a temperature of from 100.degree. to 300 .degree. C., with elimination of water, to an acid number of less than 100 mg of KOH/g of resin, and then reacting the resulting products with: J) carboxylic acids which contain at least two carboxyl groups and are not .alpha.,.beta.-ethylenically unsaturated, or their anhydrides, in the temperature range from 200.degree. to 300 .degree. C.; are suitable as binder resins for the intaglio printing of illustrations.