Acylation process

US10626193B2 · kind B2 · utility

Assignee

• RHODIA ACETOW GMBH · DE

Inventors

• Jana Lubkoll · Glückstadt, DE
• Armin Stein · Kenzingen, DE

Key dates

• Filing date: Oct 15, 2014
• Grant date: Apr 21, 2020
• Expiry date: Feb 22, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention concerns a process for the manufacture of an acylated polymer composition comprising amylose and/or amylopectin, comprising a pre-treatment step in the presence of an acid, and optionally one additive selected from the group of a hydroxycarboxylic acid and a salt in combination with a polycarboxylic acid. After pre-treatment, the polymer is acylated and, preferably, subjected to a post-treatment step with an acid. The products obtained are useful as additives in varnishes, lacquers, coatings, thickeners, adhesives or binders, and preferably inks.