Avery Dennison Corporation

James P Akeley

Colin C Smith

Christopher J Blackwell

James R Bodwell

Charles R Williams, Jr

Mitchell J Rackovan

Ivan S Lee

Shiaonung J Su

Tamara L McCartney

Sara E Porosky

Ivan S P Lee

Kenneth J Wolfe

Ajay S Desai

Karen L Karbacka

Mitch J Rackovan

Tamara L Mccartney

The present invention relates to an adhesive compositions, facestocks and/or packaging labels containing same, where such compositions, facestocks and/or labels are designed to facilitate the recyclability of a plastic article formed from any suitable polymer or mixture of polymers (e.g., a polyethylene terephthalate (PET), high density polyethylene (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), or others of all plastic types), or even glass bottles. In another embodiment, the present invention relates to a method for removing an adhesive composition, facestock and/or packaging label containing same, from a plastic article that is to be recycled.

Adhesive acrylate-olefin copolymers, methods for producing same and compositions utilizing same

Adhesive compositions, facestocks and/or packaging labels containing same, where such compositions, facestocks and/or labels designed to facilitate the recyclability of a plastic article formed from any suitable polymer or mixture of polymers (e.g., a polyethylene terephthalate (PET), recycled polyethylene terephthalate (rPET), high density polyethylene (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), polyesters, recycled polyesters, polylacticacid (PLA), biopolymers, cellulose or other types of polymers or plastics) are described. Methods for removing an adhesive composition, facestock and/or packaging label containing same, from a plastic article that is to be recycled and/or subjected to multi-generational recycling are also provided.

Labels compatible with recycling

A dissolvable pressure-sensitive adhesive is provided. The adhesive comprises an emulsion acrylic copolymer formed from a plurality of monomers comprising an alkyl (meth)acrylate, an N-vinyl lactam monomer, and at least one hydroxy (meth)acrylate ester, and preferably at least one modifying monomer. The copolymer is preferably blended with one or more post-additive to enhance its dissolvability. Preferably the copolymer has a weight average molecular weight less than about 120,000.

Water-soluble pressure-sensitive adhesives

General purpose inherently tacky acrylic pressure sensitive adhesive polymers formed of alkyl acrylates, vinyl esters, diesters of dicarboxylic acid and saturated carbocylic acids, having improved properties, a lower residual monomer content and a reduced polymerization time are formed by a sequential polymerization process in which 50 to 95 percent, typically 90 percent, of the monomers are incrementally added to a reactor as a first charge containing substantially all of the vinyl esters, preferably all of the diesters of dicarboxylic acid, the balance of the monomers being fed in a second incremental charge.

Process for the production of general purpose PSA's

General purpose inherently tacky acrylic pressure sensitive adhesive polymers formed of alkyl acrylates, vinyl esters, and saturated carboxylic acids, having improved properties, a lower residual monomer content are formed by a sequential emulsion polymerization process in which 40 to 70 percent, typically 45 percent, of the monomers are incrementally added to a reactor as a first charge containing substantially all of the vinyl esters, the balance of the monomers being fed in a second incremental charge.

Process for the production of improved PSA's

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Mill Hall, PA, United States of America

James P Akeley