Back to results
US 5,508,320 AGranted
Printing inks based on mineral oil and their use for sheet offset printing
AssigneeBASF Lacke + Farben, AG
InventorsKarl-Wilhelm Klemm, Werner Fries, Matthias Kappel
Life of this patent
Estimating the term…
Abstract
A printing ink based on mineral oil contains, as a binder, a mixture of A) from 10 to 50% by weight of an alkyd resin having a hydroxyl number of from 40 to 260 and an acid number of from 10 to 70 and B) from 50 to 90% by weight of a reaction product of rosin and a phenol/formaldehyde condensate. The printing inks are used in the sheet offset printing process.
Claims4
A printing ink based on mineral oil, containing, as a binder, a mixture of
- A) from 10 to 50% by weight of an alkyd resin having a hydroxyl number of from 40 to 260 and an acid number of from 20 to 70 and obtained by reacting
- (a.sub.1) an unsaturated fatty acid of 6 to 20 carbon atoms or a mixture of such acids or triglycerides thereof,
- (a.sub.2) one or more polyols of 3 to 8 carbon atoms and
- (a.sub.3) a dicarboxylic acid of 4 to 20 carbon atoms to give a reaction product having an acid number of from 10 to 15, and
- then reacting said reaction product at from 120.degree. to 180.degree. C. with
- (a.sub.4) a dicarboxylic anhydride of 4 to 20 carbon atoms, and
- B) from 50 to 90% by weight of a reaction product of rosin and a phenol/formaldehyde condensate.
4 more elements
Dependencies are inferred from the claim text.