PE wax dispersions in the coating of plastics

US8652247B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Szilard Csihony · Ludwigshafen, DE
• Ivette Garcia Castro · Ludwigshafen, DE
• Heike Pfistner · Ludwigshafen, DE
• Eva Wagner · Bad Dürkheim, DE
• Pia Baum · Weinheim, DE
• Christian Hubert Weidl · Speyer, DE

Key dates

• Filing date: Mar 25, 2011
• Grant date: Feb 18, 2014
• Expiry date: Apr 24, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D191/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An aqueous paint formulation having an aqueous basecoat and an aqueous dispersion having an at least partially neutralized ethylene copolymer wax, wherein the ethylene copolymer wax contains as comonomers in copolymerized form (A) 12-40 wt % of an ethylenically unsaturated carboxylic acid of formula (I), (B) 60-88 wt % of ethylene, and (C) 0-10 wt % of a further comonomer; or the ethylene copolymer was contains as comonomers in copolymerized form (A′) 5-50 wt % of a comonomer of formula (II), (B′) 50-95 wt % of ethylene, and (C′) 0-20 wt % of a further comonomer; wherein the ethylene copolymer wax comprising the comonomers (A), (B), and optionally (C) has a molecular weight Mw of 10000 to 150000 g/mol, and the ethylene copolymer wax comprising the comonomers (A′), (B′), and optionally (C′) has a molecular weight Mw of 5000 to 40000 g/mol.