US 5,512,612 A · Pressure sensitive adhesive employing a water-dispersible polymer and articles made there from

Abstract

A pressure sensitive adhesive that employs a water-dispersible polymer is provided. In one embodiment of the invention the adhesive comprises microparticles and the water-dispersible component. In another embodiment the adhesive comprises a novel water-dispersible polymer that contains a plurality of poly(alkoxyalkyl) acrylate units as a major component. The pressure sensitive adhesive may be provided as a tape and used with labels for containers, sterilization indicator tapes and labels, closure systems for envelopes, surgical wrappers, and mammalian body coverings. It may also be used in the preparation of paper web splices. In one embodiment of the invention the tape is repulpable. In another embodiment it is launderable.

Claims30

Dependent claims

A water dispersible, normally tacky pressure sensitive adhesive composition comprising a blend of:

A) a polymeric, elastomeric, solvent insoluble but solvent dispersible microparticle component, and
B) a water-dispersible polymeric component, wherein said adhesive composition is repulpable when tested according to TAPPI test UM-213.

A normally tacky pressure-sensitive adhesive composition comprising a blend of:

A) a polymeric, elastomeric solvent insoluble but solvent dispersible microparticle component, that comprises the polymer of:
(1) 100 parts by weight or less of at least one free radically polymerizable monomer selected from the group consisting of alkyl acrylate esters, alkyl methacrylate esters and mixtures thereof;
(2) 0 to 30 parts by weight of at least one polar monomer copolymerizable with the free radically polymerizable monomer of part A(1);
and
(3) 0 to 40 parts by weight of at least one hydrophilic oligomer or polymer copolymerizable with either of the free radically polymerizable monomer A(1) and the polar monomer A(2), and
B) a water-dispersible polymer component that comprises the polymer of:
(1) 50 to 98 parts by weight of a water soluble poly(alkoxyalkyl)acrylate;
and correspondingly
(2) 50 to 2 parts by weight of a carboxylic acid
wherein the microparticle is either solid or contains at least one void.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/222,458Filed 4 Apr 1994

Granted

30 Apr 1996

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

C09J 133/08
Of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical: homopolymers or…
C09J 7/385
Based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds: acrylic polymers
C09J 133/14
Homopolymers or copolymers of esters: of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
C08L 33/08
Of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical: homopolymers or…

Pressure sensitive adhesive employing a water-dispersible polymer and articles made there from

Life of this patent

Pressure sensitive adhesive employing a water-dispersible polymer and articles made there from

Life of this patent

Abstract

Claims30