Polymer dispersants

US9683126B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Huiguang Kou · Viernheim, DE
• Clemens Auschra · Glückstadt, DE
• Frank Oliver Heinrich Pirrung · Ludwigshafen am Rhein, DE

Key dates

• Filing date: Jun 24, 2016
• Grant date: Jun 20, 2017
• Expiry date: Jun 24, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F10/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to novel polymer dispersants and to a liquid compositions containing solid fine particles, such as organic or inorganic pigments and fillers, and the polymer dispersants. The polymer dispersants have at least one functional moiety of the formula I, which is bound to one of the termini or to the backbone of the polymer: (I) where # indicates the point of attachment to the terminus and/or to the polymer backbone; k is 0, 1, 2, 3 or 4; m is 0, 1, 2, 3, 4, 5, 6, 7, 8 or 9; A is a chemical bond or a divalent moiety selected from the group consisting of C1-C6 alkylene, —O—(C2-C6 alkylene), —C(═O)—O—(C2-C6 alkylene), —NR3—(C2-C6 alkylene) and C(═O)—NR3—(C2-C6 alkylene), where the C2-C6 alkylene part is attached to Q; Q is a divalent moiety selected from the group consisting of —O—, —NH— and —S—; R1 is independently selected from the group consisting of —OH, —COOH, —COOCH3, —NH2, —NH(C1-C6 alkyl), —N(C1-C6 alkyl)2, —NO2, —S(═O)2R4, C1-C20 alkyl, C1-C4 alkoxy, halogen, aryloxy, aryl, heteroaryl, where aryl, hetaryl and aryloxy are unsubstituted or substituted by 1, 2, 3 or 4 radicals selected from the group consisting of —OH, —COOH, —COOCH3, —NH2, —NH(C1-C6 alk…