Pressure sensitive adhesive comprising cellulose

US5536778A · kind A · utility

Assignee

• Minnesota Mining and Manufacturing Company · US

Inventors

• Karl W. Kreckel · Haan, DE
• Andreas Graichen · Finspång, SE

Key dates

• Filing date: Apr 21, 1993
• Grant date: Jul 16, 1996
• Expiry date: Apr 21, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J2433/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A pressure-sensitive adhesive is obtainable by a process comprising polymerizing PA1 an ester of acrylic or methacrylic acid having a non-tertiary alcohol comprising 4 to 12 carbon atoms in the alkyl chain (component A) in the presence of PA1 at least one kind of a naturally occuring polysaccharide except hydrolyzed starch, cellulose ethers and cellulose esters (component B), PA1 radical chain initiators (component C). The pressure sensitive articles manufactured from the pressure sensitive adhesive have improved properties. In particular, the articles are repositionable and the adhesion under humid conditions is improved when cellulose powder is used as component B.