Block copolymers in adhesive dispersions

US8921467B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Oliver Sommer · Goldkronach, DE
• Dirk Kasper · Goldkronach, DE
• Heike Eisfeld · Goldkronach, DE
• Peter Ziskofen · Solingen, DE
• Thomas Moeller · Goldkronach, DE

Key dates

• Filing date: Dec 20, 2012
• Grant date: Dec 30, 2014
• Expiry date: Jan 5, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2453/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An aqueous adhesive dispersion containing 25 to 70 wt % acrylate block copolymers and/or styrene block copolymers that have a molecular weight of more than 15,000 g/mol and at least two different glass transition temperatures, one glass temperature (Tg) being above 50° C., the other glass transition temperature below +10° C., as well as additionally further additives, the dispersion containing less than 0.5 wt % organic solvent.