PSA polymer of N-butyl acrylate, ethyl acrylate, vinyl acetate, and acid monomer

US9518199B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Matthias Gerst · Maikammer, DE
• Gerhard Auchter · Bad Dürkheim, DE
• Cornelis Petrus Beyers · Altrip, DE

Key dates

• Filing date: Oct 28, 2010
• Grant date: Dec 13, 2016
• Expiry date: Aug 4, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2891
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Described is a pressure-sensitive adhesive (PSA) polymer formed from (i) 50%-95% by weight of n-butyl acrylate, (ii) 1%-20% by weight of ethyl acrylate, (iii) 1%-20% by weight of vinyl acetate, (iv) 0.1%-5% by weight of at least one ethylenically unsaturated acid or ethylenically unsaturated acid anhydride, and (v) 0% to 30% by weight of other ethylenically unsaturated compounds different from the monomers (i) to (iv). The PSA polymer can be used for producing self-adhesive articles, more particularly paper labels or film labels.