A reaction product and hot melt adhesive compositions that include the reaction product are disclosed. The reaction product includes the reaction product of a first polymer that includes at least one of polypropylene homopolymer and polypropylene-alpha-olefin copolymer, a first wax that includes at least one of polyethylene wax, Fischer Tropsch wax and paraffin wax, and a free radical initiator and has a viscosity of no greater than 12,000 centipoise at 177 C.

A reaction product and hot melt adhesive compositions that include the reaction product are disclosed. The reaction product includes the reaction product of a first polymer that includes at least one of polypropylene homopolymer and polypropylene-alpha-olefin copolymer, a first wax that includes at least one of polyethylene wax, Fischer Tropsch wax and paraffin wax, and a free radical initiator and has a viscosity of no greater than 12,000 centipoise at 177 C.

One embodiment is a pressure sensitive adhesive construct comprising: (a) a backing substrate; and (b) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes a product made from (i) at least one epoxidized vegetable oil and; (ii) a dimer acid or anhydride thereof, a trimer acid or anhydride thereof, a polymerized fatty acid or anhydride thereof, or a mixture thereof. A further embodiment is a pressure sensitive adhesive construct comprising: (A) a backing substrate; and (B) a pressure sensitive adhesive composition disposed on the backing substrate, wherein the pressure sensitive adhesive composition includes a product made from (i) at least one epoxidized vegetable oil and; (ii) a prepolymer or oligomer capped with a carboxylic acid group at both prepolymer or oligomer chain ends, or a branched prepolymer or oligomer with at least two of the prepolymer or oligomer branches and chain ends capped with a carboxylic acid group, wherein the carboxylic acid-capped prepolymer or oligomer is made from (a) a dibasic acid reacted with (b) a glycidyl or an epoxidized compound having at least two epoxy groups, a diol or polyol, a diamine, or a combination thereof.

An inventive thermoset viscoelastomeric polymer and adhesive products thereof is provided. In some embodiments, an inventive adhesive product consists essentially of the thermoset viscoelastomeric polymer. In other embodiments, the thermoset viscoelastomeric polymer can be applied to a support member to provide an inventive adhesive product. In still other embodiments, the thermoset viscoelastomeric polymer can be applied to a conventional article to convert the article into an inventive adhesive product. The thermoset viscoelastomeric polymer and products thereof can comprise viscoelastic, adhesive, cohesive and releasability properties. In some embodiments, the thermoset viscoelastomeric polymer and products thereof can comprise cleansability and reusability properties. In further embodiments, the thermoset viscoelastomeric polymer and products thereof can comprise antimicrobial properties.

Provided are adhesive compositions comprising a maleated (maleic anhydride modified) polypropylene wax that is combined with a thermoplastic binder polymer, as well as multilayer cap constructions that utilize said adhesive compositions to bond non-toxic polymer liners to the interior surfaces of metal caps. The adhesives have a relatively high melting point and can be used in consumable product packaging applications that are subjected to industry standard, high temperature sterilization procedures.

The present invention is to provide a water-based hot-melt adhesive for healthcare packaging. The water-based hot-melt adhesive includes 20 to 60 weight parts of hydrophilic-modified water-based polyolefin resin; 1 to 30 weight parts of water-based ionomer; 10 to 30 weight parts of wax particles; and 10 to 30 weight parts of tackifier particles. The coating layer formed on the healthcare packaging substrate from the water-based hot-melt adhesive of the present invention has great gas-permeability and weather resistance, and the healthcare packaging substrate with the water-based hot-melt adhesive of the present invention has satisfied seal strength, pealing ability and reliability after sealing with flexible sheet or blister containers at the peripheral edges thereof.

The present disclosure is to provide a water-based hot-melt adhesive for healthcare packaging. The water-based hot-melt adhesive includes: 10 wt % to 35 wt % of a water-based thermoplastic resin; 20 wt % to 45 wt % of wax particles and 40 wt % to 60 wt % of tackifier; wherein the tackifier including emulsion tackifier and particulate tackifier and the total amount of the particles in the water-based hot-melt adhesive is present at 40 wt % to 65 wt % based on the total weight of the water-based hot-melt adhesive. The coating layer formed on the healthcare packaging substrate from the water-based hot-melt adhesive of the present disclosure has great gas-permeability, and satisfied seal strength and peeling ability after sealing around with flexible sheets or blister containers.

The disclosure relates to a mechanically recyclable label (1) comprising a face (2) and an adhesive (4). The face (2) comprises ethylene containing polymer and the adhesive (4) comprises pressure sensitive adhesive. The pressure sensitive adhesive comprises at least 15 wt. % of a base polymer, at least 25 wt. % of a tackifier and at least 10 wt. % of a plasticizer. The base polymer, the tackifier and the plasticizer are colourless and odourless. The base polymer is a styrene block copolymer. The mechanically recyclable label (1) is mechanically recyclable with packaging material comprising ethylene containing polymer. The disclosure further relates to a label laminate (8), a method for manufacturing a label laminate (8), a labelled item (101), as well as to use of a label (1) and of a label laminate (8). The disclosure also relates to use of a waste matrix of the label laminate for producing granulates of recycled plastic.

A pressure sensitive adhesive article that includes: a backing having two major surfaces, at least one of which has a pressure sensitive adhesive layer disposed thereon, the pressure sensitive adhesive layer having an average thickness of 25 microns to 50 microns and including: a styrene-isoprene-containing block copolymer including a styrene-isoprene diblock copolymer and a styrene-isoprene-styrene triblock copolymer; a tackifier; and an oil; an article that includes recycled corrugate having the pressure sensitive adhesive article adhered thereto; a method of sealing a package using the pressure sensitive adhesive article; and a method of making the pressure sensitive adhesive article.

The present invention provides a hot melt adhesive, comprising polyester resins with a Tg below 0 C. and frequently combined with polyester resins with a Tg above 50 C. that can be applied at 80 C. or lower, having excellent impact resistance and broad chemical resistance. The hot melt adhesive of the invention is ideally suited for use in the manufacture of handheld and wearable electronic devices.