3m Innovative Properties Company

University of Ottawa

Lili Qie

Jayshree Seth

John R Jacobsen

Zhipeng Song

Zhong Chen

David J Drath

Glenn S Prementine

Biing-Huei D Su

Marc Arnold Dube

Alison K Graske

Encai Hao

Kumars Sakizadeh

Joseph D Rule

Yongshang Lu

Richard B Ross

David T Amos

Peggy S Willett

Jianhui Xia

Robert D Waid

Chi-Ming Tseng

Mary M Caruso Dailey

Anne N De Rovere

Charlie Chia-Tie Ho

Lauren A Polski

There is provided a pressure sensitive adhesive composition comprising a polyurethane polymer that comprises the reaction product of a polyisocyanate component and a polyol component. The polyol component has a hydrophilic-lipophilic balance (HLB) less than 10. The polyurethane further comprises 0.5 to 10 wt.-% of hydrophilic polymerized units having an HLB greater than 12, such as a reaction product of a polyethylene glycol polymer. In another embodiment, the polyurethane further comprises pendent ethylenically unsaturated groups. Also described are articles such as laminating tapes and protective films as well as methods of bonding substrates with the pressure sensitive adhesive and laminating tape.

Polyurethane adhesive with chemical resistant

Articles are provided, including a substrate having a first major surface, the substrate including a nonwoven material, a woven material, or a foam. The article further includes microcapsules having an outer surface and a plasticizer encapsulated in the microcapsules, where the plurality of microcapsules is attached to the first major surface of the substrate with a polymeric material. A method of making an article is also provided, including providing a substrate having a first major surface and providing microcapsules having an outer surface and a plasticizer encapsulated in the microcapsules. The method further includes attaching the microcapsules to the first major surface of the substrate with a polymeric material, thereby forming a polymeric matrix attached to the first major surface of the substrate.

Articles including microcapsules for on-demand adhesion and methods of making same

A pressure-sensitive adhesive is provided that is a dried product of a latex composition, which is formed from an emulsion composition. The latex composition and the emulsion composition are also provided. The emulsion composition has droplets that contain various monomers plus a (meth)acrylate polymer and a hydrogenated hydrocarbon tackifier dissolved in the monomers. Additionally, an article containing a layer of the pressure-sensitive adhesive and a method of forming the pressure-sensitive adhesive are provided. The pressure-sensitive adhesives often have both high peel adhesion and high shear strength (i.e., high cohesive strength or high shear holding power).

Water-based pressure-sensitive adhesive compositions

The present disclosure relates to acrylic adhesive emulsions comprising a core-shell polymeric component comprising an inner core and an outer shell containing at least one pendent functional group; a polyfunctional component capable of reacting with at least one of the pendent functional groups on the outer shell; wherein the inner core is free of functional groups reactive with the pendent functional groups on the outer shell; and wherein the pH of the emulsion is 6.5 or less; and wherein the emulsion is a fast-setting, one part, aqueous, adhesive. Bonded articles made therefrom, and methods of bonding articles using these emulsions are also disclosed.

One part, fast-setting, aqueous adhesive emulsions

A pressure-sensitive adhesive is provided that is a dried product of a latex composition, which is formed from an emulsion composition. The latex composition and the emulsion composition are also provided. The emulsion composition has droplets that contain various monomers plus a (meth)acrylate polymer dissolved in the monomers. Additionally, an article containing a layer of the pressure-sensitive adhesive and a method of forming the pressure-sensitive adhesive are provided. The pressure-sensitive adhesives often have both high peel adhesion and high shear strength (i.e., high cohesive strength or high shear holding power).

Methods of preparing latex-based adhesives are provided. Such methods include aging and heating of latex-films to improve performance properties with respect to tack, peel strength, and sheer strength. The latex adhesives may be used as pressure sensitive adhesives.

Methods for making adhesives

The present technology provides a latex comprising: a mixture of microgels and sol polymers of an acrylic copolymer, wherein the Mof the acrylic copolymer is greater than or equal to the Mthereof; the Mof the sol polymers is greater than or equal to twice the Mof the acrylic copolymer; the amount of sol polymer having a Mless than twice the Mof the acrylic copolymer is about 20 wt % or less than 20 wt %. Such lattices may be used to form films for use as adhesives such as pressure sensitive adhesives. Also provided are methods for manufacturing the films and adhesives.

Latex compositions and uses thereof

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Woodbury, MN, United States of America

Lili Qie