Vianova Resins Ag

Vianova Kunstharz A.g.

Johann Luttenberger

Werner Wilfinger

Klaus L Behmel

Kurt Gossak

Laszlo Tulacs

Hans Hiden

Hansjorg Aigner

Ingo Kreissmann

A low-solvent aqueous binder includes: a water-insoluble synthetic resin component A; and an emulsifier resin B in a mass ratio of A to B of from 70:30 to 30:70. The emulsifier resin B is a reaction product of a water-insoluble synthetic resin B1 that includes hydroxyl groups as functional groups, a synthetic resin B2 that includes carboxyl groups as functional groups, and a neutralizing agent for the carboxyl groups of B. The amount of the neutralizing agent is such that the neutralizing agent is able to neutralize from 5 to 200% of the carboxyl groups of B. A process for preparing a low-solvent aqueous binder includes: mixing the water-insoluble synthetic resin component B1 comprising hydroxyl functional groups and the synthetic resin B2 in bulk or dissolved in an organic solvent to form a mixture; removing the solvent by applying subatmospheric pressure and heating until the content of the mixture is at least 85% by mass; maintaining the mixture at a temperature from 90&deg; to 150&deg; C. until the reaction product of the mixture is homogeneously emulsifiable in a mass ratio of 3 parts of resin to 7 parts of water; neutralizing the reaction product by adding a neutralizing agent in an amount sufficient to neutralize from 5 to 200% of carboxyl groups that have remained following the reaction; adding the water-insoluble synthetic resin A in a mass ratio of A to B of from 70:30 to 30:70, and emulsifying the mixture in water.

Water-dilutable film-forming binders

Process for the preparation of water-dilutable coating binders, and the

Use of low molecular weight oxazolines as neutralizing agents for anionic water-dilutable resins is described. Advantages obtained over use of the conventional amines as neutralizers include greater permissible film build-up without adverse results and films having improved water and alkali resistance without detriment to other advantageous properties.

Use of low molecular weight oxazolines as neutralizing agents for

Growing community of inventors

Graz, Austria

Johann Luttenberger