US Government As Represented by the Secretary of the Army

Joshua A Orlicki

Andre A Williams

Robert E Jensen

Steven H McKnight

Joseph L Lenhart

Matthew S Bratcher

Ngon T Tran

Matthew A Bartucci

Disclosed is a method for improving interfacial adhesion of an adhesive to unprimed substrates and an improved adhesive composition, involving admixing an adhesive with an adhesive modifier, where the modifier is at least partially soluble in the at least one adhesive and includes either a non-aromatic polyol or a molecule having at least one ortho-hydroxyl substitution on a benzene ring.

Admixed modifiers for adhesives

A hyperbranched polymer based on one or more repeating units of an ABtype monomer, wherein A and B are functional groups and x is greater than or equal to 2, wherein A reacts with, or substantially reacts with, B, wherein B is fractionally functionlized with a plurality of functional groups comprising a first functional group comprising a C-Calkyl chain attached to the repeating unit through a carbonyl group (C&#x2550;O) via an ester linkage, a second functional group comprising a partially fluorinated or perfluorinated C-Calkyl chain attached to the repeating unit through a carbonyl group (C&#x2550;O) via an ester linkage, and a third functional group comprising substantially one of a stabilized radical source attached to the repeating unit via a C-Ctether, or a 5 to 8 member chloroamide heterocycle of carbon and nitrogen that is attached to the repeating unit via a C-Ctether.

Microbial growth enhancement from a dry film additive

A hyperbranched polymer based on one or more repeating units of an ABtype monomer, wherein A and B are functional groups and x is greater than or equal to 2, wherein A reacts with, or substantially reacts with, B, wherein B is fractionally functionlized with a plurality of functional groups comprising a first functional group comprising a C-Calkyl chain attached to the repeating unit through a carbonyl group (C&#x2550;O) via an ester linkage, a second functional group comprising a partially fluorinated or perfluorinated Calkyl chain attached to the repeating unit through a carbonyl group (C&#x2550;O) via an ester linkage, and a third functional group comprising substantially one of a stabilized radical source attached to the repeating unit via a C-Ctether, or a 5 to 8 member chloroamide heterocycle of carbon and nitrogen that is attached to the repeating unit via a C-Ctether.

A topcoat having a polyfunctional scaffold in the form of a hyperbranched polymer (HBP) with a buoy group coupled to the HBP. The HBP can also have a 'delivered' group and/or an anchor group coupled thereto. The buoy group can be a fluorinated chain end, one or more fluorinated and aliphatic chain ends and/or one or more wholly aliphatic chain ends. The 'delivered' group can contain at least one of an ionic species, a fluorescent tag, a bioreactive site, a catalyst and the like, and the anchor group an epoxy, a (meth)acrylate or an isocyanate. The water-disbursable topcoat can also include a solubilizing group such as 2-butanone or 4-methyl-2-pentanone coupled to the HBP.

Surface segregating additives for enhanced chemical agent resistant topcoats

An article is provided that includes a polymeric fiber that has an excess number of surface active reactive moieties relative to the number of surface reactive moieties found on the fiber in a native state. A particle is bonded covalently to the fiber through an intermediate coupling agent. Multiple particles can be covalently bonded to the fiber, the multiple particles can be bonded uniformly or asymmetrically around the fiber diameter. A process for modifying a fiber includes creating surface activated reactive moieties thereon. The activated fiber is then exposed to a liquid solution containing a coupling agent to form a covalent bond. The coupling agent is also reacted with a particle in a liquid solution to form a covalent bond between the coupling agent and the particle. The coupling agent is covalently bonded to either a particle and then bonded to the fiber, or vice versa.

Fiber modified with particulate through a coupling agent

Methods and systems for modifying a polymer are disclosed herein. A matrix is generally provided having a surface thereof, wherein the matrix comprises a plurality of hyperbranched polymers. The plurality of hyperbranched polymers can be chemically bound to a plurality of surfactants or order to modify the surface and produce a polymeric material thereof. The surface is tailored with a plurality of functional groups that self-assemble and are deliverable to the surface of the solution, including interfaces thereof, thereby permitting a high-density assembly of functional groups to operate in concert with one another in order to generate a modified surface thereof. The polymeric material produced thereof can be reversibly adaptable to environmental conditions through a blooming of varying surface functional group to the surface of the solution.

Growing community of inventors

Havre de Grace, MD, United States of America

Joshua A Orlicki