Abstract: Adhesives containing inter-crosslinked polymeric microparticles are described. The polymeric microparticles include an acrylic polymer. The present disclosure also relates to water-based emulsions containing polymeric microparticles and a suitable inter-crosslinking agent as well as methods of making adhesives from such water-based emulsions.

Abstract: Reinforcement patches comprising a mastic and a plurality of unidirectionally-aligned fibers at least partially embedded in a first major surface of the mastic are described. Generally, at least 90% of the unidirectionally-aligned fibers are oriented having an axis of alignment within +/?10 degrees of the average axis of alignment of the unidirectionally-aligned fibers. Reinforcement patches that include an encapsulating resin and a cover layer are also described. Methods of reinforcing a panel using reinforcement panels, and panels reinforced with the patches are also disclosed.

Abstract: A method for joining pieces of a thermoplastic web material in order to form an expandable cellular block, includes steps of positioning a new piece to be added to the cellular block in opposing face-to-face relation with a last piece most recently previously welded to the cellular block, positioning a heating device having a plurality of heating fingers between the last piece and the new piece and in contact with the opposing surfaces of the pieces, causing the heating fingers to heat the pieces at locations contacted by the heating fingers, and retracting the heating fingers from between the pieces and then pressing the new piece against the last piece such that the new piece is welded to the last piece at the locations heated by the fingers.

Abstract: Composite proppant particles each of which comprises a plurality of microbubbles and a resin binder are disclosed. Also disclosed are a method of using such composite proppant particles to prop fractures in wells formed in underground formations.

Abstract: The invention provides a fluorinated surfactant having the general formula: [Rf—(O)t—CHF—(CF2)n—COO—]iXi+??(I) wherein Rf represents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, t is 0 or 1 and n is 0 or 1, Xi+ represents a cation having a valence i and i is 1, 2 or 3. The surfactant can be used in emulsion polymerization of fluoromonomers to prepare fluoropolymers.

Abstract: A method for removing a fluorinated carboxylic acid or salt thereof from an aqueous liquid by contacting the aqueous liquid with adsorbent particles. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of partially fluorinated carboxylic acids or salts thereof and fully fluorinated carboxylic acids or salts thereof.

Abstract: Provided is a method comprising polymerizing at least one fluorinated monomer in an aqueous emulsion polymerization in the presence of a carbosilane surfactant having at least one hydrophobic part, wherein the hydrophobic part has at least one silicon atom, and having at least one hydrophilic part, with the proviso that the carbosilane contains no Si—O bonds.

Abstract: A curative composition comprising a cation and an anion of the formula Anq?Qpm+, wherein m, n, p, and q are positive integers, wherein m*p=n*q, wherein Qm+ is an organo onium, and Aq? is an anion, provided that at least one Aq? is selected from the formula: wherein each R independently is H, halo, alkyl, aryl, aralkyl, or cycloalkyl, and which also may be halogenated, fluorinated, or perfluorinated, wherein two or more of R and R? groups may together form a ring, wherein each R group independently may contain one or more heteroatom(s), wherein R? can be the same as R, with the proviso that R? cannot be halo. Also provided are a fluoropolymer composition including this curative, a method of making a fluoropolymer, and fluoropolymer articles containing curable or cured fluoropolymer compositions.

Abstract: The present invention relates to a dust suppressant composition comprising a aqueous solution of polyvinyl alcohol, acrylic-based latex, glycerin, silicone based surfactant and a polysiloxane-based wetting agent. Preferably, the composition comprises from about 10 to about 46% of polyvinyl alcohol, from about 20 to about 60% of an acrylic-based latex, from about 0.6 to about 7.0% of glycerin, from about 0.1 to about 1.5% of silicone-based surfactant and from about 0.001 to about 0.5% of polysiloxane-based wetting agent. The composition provides a polymer film over a dusting material thus forming a homogeneous and resistant layer. The instant composition, which is applied over the dusting material (preferably sprayed over the material) and dried at room temperature, presents a low surface tension resulting in better wetting of the particulates and agglomeration of the material. The latter two properties ensure that there is less breakage of the polymer film during continuous use or application (e.g.

Abstract: A catalyst is preparable from a first component represented by R?C(CF2R)O? Q+ and a second component (NCCFR?)bZ. The catalyst may be combined with a fluoropolymer having nitrogen-containing cure-sites to form a curable composition that is useful for preparing fluoroelastomer compositions.

Abstract: The invention provides an article comprising a first layer comprising a first substantially solid partially-fluorinated thermoplastic polymer, and a second layer comprising a second substantially solid partially-fluorinated thermoplastic polymer, the second layer bonded to the first layer, wherein the first polymer and the second polymer have different compositions. The invention also provides layered articles and processes for preparing layered articles.

Abstract: Provided is a method of manufacturing a perhalogenated elastomer comprising using an onium compound to coagulate a latex comprising polymer particles, the polymer particles consisting essentially of interpolymerized units of one or more perhalogenated comonomer(s) and at least one cure site monomer, wherein the coagulation is performed essentially free of metal ions and metal salts. Also provided is an elastomeric composition comprising a curable perhalogenated elastomer comprising interpolymerized units derived from a nitrogen-containing cure site monomer and coagulated with an onium compound, wherein the elastomer is capable of curing without adding further components and wherein the composition is essentially free of metal ions and metal salts. Also provided are fluoropolymer articles and methods of making fluoropolymer compositions and articles.

Abstract: Articles and methods of making articles are provided. The articles have a dendrimeric material attached to a substrate. The dendrimeric material, an attachment group connecting the dendrimeric material to the substrate, or both the dendrimeric material and the attachment group can be formed by a ring-opening reaction of an azlactone group with a nucleophilic group such as a hydroxyl group, primary amino group, or secondary amino group.

Abstract: Provided is a method of manufacturing a perhalogenated elastomer comprising using an onium compound to coagulate a latex comprising polymer particles, the polymer particles consisting essentially of interpolymerized units of one or more perhalogenated comonomer(s) and at least one cure site monomer, wherein the coagulation is performed essentially free of metal ions and metal salts. Also provided is an elastomeric composition comprising a curable perhalogenated elastomer comprising interpolymerized units derived from a nitrogen-containing cure site monomer and coagulated with an onium compound, wherein the elastomer is capable of curing without adding further components and wherein the composition is essentially free of metal ions and metal salts. Also provided are fluoropolymer articles and methods of making fluoropolymer compositions and articles.

Abstract: A curative composition comprising a cation and an anion of the formula Anq?Qpm+, wherein m, n, p, and q are positive integers, wherein m*p=n*q, wherein Qm+ is an organo onium, and Aq? is an anion, provided that at least one Aq? is selected from the formula: wherein each R independently is H, halo, alkyl, aryl, aralkyl, or cycloalkyl, and which also may be halogenated, fluorinated, or perfluorinated, wherein two or more of R and R? groups may together form a ring, wherein each R group independently may contain one or more heteroatom(s), wherein R? can be the same as R, with the proviso that R? cannot be halo. Also provided are a fluoropolymer composition including this curative, a method of making a fluoropolymer, and fluoropolymer articles containing curable or cured fluoropolymer compositions.

Abstract: The invention provides a melt-processable conductive fluorothermoplastic composition comprising three components. The first component is at least one melt-processable, thermoplastic fluoropolymer component having its interpolymerized units derived from (i) at least 50 wt % of TFE, and (ii) one or more ethylenically-unsaturated monomers represented by the formulas (a) CF2?CF—Rf, (b) CF2?CF—O—Rf?, and (c) CH2?CR2. The thermoplastic fluoropolymer component is substantially free of interpolymerized units derived from VDF. The second component is from about 0.1 to about 10 weight percent of a hydrocarbon polymer, and the third component is from about 1 to about 20 weight percent of conductive filler. The invention also provides a method for making fluorothermoplastic compositions and shaped articles comprising a conductive fluorothermoplastic composition.

Abstract: A composition comprising a fluorinated block copolymer and at least one of an intercalated layered silicate or exfoliated silicate platelets, and methods of making the same.

Abstract: A filter device adapted for filtering fluids flowing one of into or out of a fluid duct. In one embodiment, the filter device comprises a container having one or more walls, wherein at least one of the walls is at least partially rigid and a first opening and a filter element mounted in the first opening so that the filter element forms at least a portion of one of the walls. The one or more container and the interior face of the filter element define an interior adapted for collecting contaminants in a fluid flowing out of the fluid duct. The container further comprises a second opening adapted for sealingly and removably connecting the filter device to the fluid duct so as to provide fluid communication between the interior of the filter device and the fluid duct, wherein the second opening is further adapted for being closed when the filter device is removed from the fluid duct.

Abstract: The present invention provides a well-less filtration device that includes a pre-filter layer; a support layer; and at least one layer of solid phase extraction medium disposed between the pre-filter layer and the support layer. At least a portion of the pre-filter layer, support layer and solid phase extraction medium are ultrasonically welded together to form a pattern of filter cells and land areas with the land areas being disposed between the filter cells. The filter cells of the device may be arranged to conform to a standardized array format.

Abstract: A composite article is provided which includes a blend component comprising a vinylidene fluoride containing fluoropolymer and a substantially non-vinylidene fluoride containing fluoropolymer, and a component including a substantially non-fluorinated polymer having pendant amine groups intimately bonded to the blend component. Increased adhesion is observed by a greater peel strength value between the blend component and a substantially non-vinylidene fluoride containing fluoropolymer when compared to a peel strength value between a substantially non-vinylidene fluoride containing fluoropolymer and the substantially non-fluorinated polymer having pendant amine groups.