Resin dispersions having high pigment binding capacity

US4395515A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Horst Dinklage · Weiterstadt, DE
• Herbert Fink · Emmelshausen, DE
• Peter Frank · Regensburg, DE
• Hubert Rauch · Weiterstadt, DE
• Werner Siol · Pfungstadt, DE

Key dates

• Filing date: Dec 24, 1981
• Grant date: Jul 26, 1983
• Expiry date: Dec 24, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

What are disclosed are methods for making an aqueous dispersion of a synthetic resin copolymer, said dispersion having high pigment binding capacity and adaptable to use in the preparation of printing inks or pastes, said copolymer comprising a predominant amount of water insoluble monomers together with from 3 to 8 percent by weight of an acid component which is a water soluble acid or salt, which method comprises gradually adding said water insoluble monomers, together with a portion of said acid component, to an aqueous medium containing the balance of the acid component in the form of a dissolved water soluble salt; aqueous synthetic resin dispersions made by these methods; and printing inks comprising such an aqueous synthetic resin dispersion which has been neutralized and combined with such an amount of an organic solvent as converts the dispersion into a solution or colloidal dispersion of the synthetic resin.