Soil-release polymers having a grey-inhibiting effect and having high stability in solution

US8871702B2 · kind B2 · utility

Assignee

• Clariant Finance (BVI) Limited · VG

Inventors

• Roman Morschhaeuser · Mainz, DE
• Barbara Duecker · Mainz, DE
• Hans Juergen Scholz · Alzenau, DE

Key dates

• Filing date: Nov 24, 2010
• Grant date: Oct 28, 2014
• Expiry date: Nov 24, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3715
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to polyesters, obtainable by means of polymerization of the components including (a) one or more sulfo group-free aromatic dicarboxylic acids and/or salts thereof and/or anhydrides thereof and/or esters thereof, b) optionally one or more sulfo group-containing dicarboxylic acids, salts thereof and/or anhydrides thereof and/or esters thereof, c) 1,2-propylene glycol, d) ethylene glycol, e) one or more compounds of the formula (1) R1O(CHR2CHR3O)nH (1), where R1 is a linear or branched, saturated or unsaturated alkyl group having from 1 to 22 C atoms, R2 and R3, independently of one another, are hydrogen or an alkyl group having from 1 to 4 carbon atoms, and N is an integer of from 1 to 50, f) optionally one or more compounds of the formula (2) H—(OCH2CH2)m—SO3X (2), in which m is an integer from 1 to 10 and X is hydrogen or an alkali metal ion, and g); optionally one or more crosslinking polyfunctional compounds, provided that at least one of the components b) or f) is present, and provided further that the molar ratio of the components c) 1,2-propylene glycol to d) ethylene glycol is greater than or equal to 1.70.