Abstract: Provided among other things is an elastomeric article providing a chemical barrier, the article having a layered structure comprising a sequential laminate of: (a) a latex-based elastomeric polymeric barrier layer; (b) a non-reactive tie adhesive resin layer comprising oxo (—(C?O)—) groups; and (c) a polyamide layer; wherein the layered structure has a first side nearest the latex-based elastomeric polymeric barrier layer and a second side; wherein the layered structure is effective to provide a chemical permeation time in excess of 100 minutes pursuant to EN 16523-1:2015 for benchmark solvents of acetone, ethyl acetate and methanol, when applied to the first side, and in excess of 100 minutes for acetone when applied to the second side; and wherein the elastomeric layer is primarily not polyolefin.

Abstract: A chemical resistant composite glove that includes a first polymeric layer in the shape of a glove; and a second polymeric layer disposed on the first polymeric layer, and wherein the first polymeric layer is specified for one class of chemical resistance and the second polymeric layer is specified for a second class of chemical resistance, and optionally a third polymeric layer, which may be a thin coating, disposed on at least one of first polymeric layer or the second polymeric layer and is optionally specified for a third class of chemical resistance.

Abstract: A chemical resistant composite glove that includes a first polymeric layer in the shape of a glove; and a second polymeric layer disposed on the first polymeric layer, and wherein the first polymeric layer is specified for one class of chemical resistance and the second polymeric layer is specified for a second class of chemical resistance, and optionally a third polymeric layer, which may be a thin coating, disposed on at least one of first polymeric layer or the second polymeric layer and is optionally specified for a third class of chemical resistance.

Abstract: Provided among other things is an elastomeric article providing a chemical barrier, the article having a layered structure comprising a sequential laminate of: (a) a latex-based elastomeric polymeric barrier layer; (b) a non-reactive tie adhesive resin layer comprising oxo (—(C?O)—) groups; and (c) a polyamide layer; wherein the layered structure has a first side nearest the latex-based elastomeric polymeric barrier layer and a second side; wherein the layered structure is effective to provide a chemical permeation time in excess of 100 minutes pursuant to EN 16523-1:2015 for benchmark solvents of acetone, ethyl acetate and methanol, when applied to the first side, and in excess of 100 minutes for acetone when applied to the second side; and wherein the elastomeric layer is primarily not polyolefin.

Abstract: Provided among other things is an polymeric protective garment comprising a layer of carboxylated polymer that incorporates an alumina-silica composition, thus forming a silica alumina polymer composite.

Abstract: Provided in one embodiment is a cured absorbent composite comprising: liquid resistant layer of elastomer; and a layer affixed to the liquid resistant layer comprising an open foam of elastomer, wherein the moisture absorption capacity of the foam layer, normalized by the thickness of the absorptive layer, is 1.5 times that of Ansell's foam lined Household glove.

Abstract: Provided among other things is an polymeric protective garment comprising a layer of carboxylated polymer that incorporates an alumina-silica composition, thus forming a silica alumina polymer composite.

Abstract: A chemical resistant composite glove that includes a first polymeric layer in the shape of a glove; and a second polymeric layer disposed on the first polymeric layer, and wherein the first polymeric layer is specified for one class of chemical resistance and the second polymeric layer is specified for a second class of chemical resistance, and optionally a third polymeric layer, which may be a thin coating, disposed on at least one of first polymeric layer or the second polymeric layer and is optionally specified for a third class of chemical resistance.

Abstract: A viscoelastic polyurethane foam formed from a polyisocyanate and a polyol composition comprising palm olein-based polyol in an amount of 10% to 35% by weight of the total polyol composition and petroleum-based polyol in an amount of 65% to 90% by weight of the total polyol composition. The dissipation energy of the viscoelastic polyurethane foam is between 0.01 J to 0.30 J as calculated based on a hysteresis loop normalized a density of 40.80 kg/m3. This shows that the viscoelastic foam produced has an improved dampening property. The introduction of palm olein-based polyol into the production of viscoelastic foam does not affect the support factors and mechanical properties of the foam produced. The viscoelastic foams can be produced using an amount of up to 35% of palm olein-based polyol derived from palm olein or up to 25% of palm olein-based polyol derived from a mixture of palm olein and soybean oil by weight of total composition without any adjustment in the catalyst package.

Abstract: A chemical resistant composite glove that includes a first polymeric layer in the shape of a glove; and a second polymeric layer disposed on the first polymeric layer, and wherein the first polymeric layer is specified for one class of chemical resistance and the second polymeric layer is specified for a second class of chemical resistance, and optionally a third polymeric layer, which may be a thin coating, disposed on at least one of first polymeric layer or the second polymeric layer and is optionally specified for a third class of chemical resistance.

Abstract: Provided, among other things, is a breach or contamination indicating elastomeric article for indicating a breach or contamination by a selected chemical or group of chemicals, the article having an exterior and interior and comprising: (1) an interior elastomeric layer selected to resist permeation by the selected chemical(s); and (2) exterior thereto, a contiguous or dis-contiguous first indicating layer comprising a dye or pigment and an opacifying agent, the dye or pigment providing the layer with color, the first indicating layer changing color and/or opacity when contacted with a selected chemical such regions of the article where the layer is so contacted contrast with non-contacted regions. A subsequent, interior layer can provide a safety buffer allowing for removal or disposal prior to any potential for harm. A second, interior indicating layer can be used to make the warning louder when a serious breach is occurring.

Abstract: Provided in one embodiment is a cured absorbent composite comprising: liquid resistant layer of elastomer; and a layer affixed to the liquid resistant layer comprising an open foam of elastomer, wherein the moisture absorption capacity of the foam layer, normalized by the thickness of the absorptive layer, is 1.5 times that of Ansell's foam lined Household glove.

Abstract: Provided in one embodiment is a cured absorbent composite comprising: liquid resistant layer of elastomer; and a layer affixed to the liquid resistant layer comprising an open foam of elastomer, wherein the moisture absorption capacity of the foam layer, normalized by the thickness of the absorptive layer, is 1.5 times that of Ansell's foam lined Household glove.

Abstract: Methods and computing devices are described for computing a structural model stability metric, a functional model stability metric, and a behavioral model stability metric. A first state of a diagram having a first plurality of actors or participants and a second state of the diagram having a second plurality of actors or participants are obtained. One or more properties for the first state and the second state are identified. A transformation is tracked in the properties from the first state to the second state. The stability metric is calculated for the second state as a ratio of a percentage of unchanged properties from the first state to the second state to a total number of the first plurality of actors or participants in the first state of the diagram.

Abstract: A viscoelastic polyurethane foam formed from a polyisocyanate and a polyol composition comprising palm olein-based polyol in an amount of 10% to 35% by weight of the total polyol composition and petroleum-based polyol in an amount of 65% to 90% by weight of the total polyol composition. The dissipation energy of the viscoelastic polyurethane foam is between 0.01 J to 0.30 J as calculated based on a hysteresis loop normalized a density of 40.80 kg/m3. This shows that the viscoelastic foam produced has an improved dampening property. The introduction of palm olein-based polyol into the production of viscoelastic foam does not affect the support factors and mechanical properties of the foam produced. The viscoelastic foams can be produced using an amount of up to 35% of palm olein-based polyol derived from palm olein or up to 25% of palm olein-based polyol derived from a mixture of palm olein and soybean oil by weight of total composition without any adjustment in the catalyst package.

Abstract: A chemical resistant composite glove that includes a first polymeric layer in the shape of a glove; and a second polymeric layer disposed on the first polymeric layer, and wherein the first polymeric layer is specified for one class of chemical resistance and the second polymeric layer is specified for a second class of chemical resistance, and optionally a third polymeric layer, which may be a thin coating, disposed on at least one of first polymeric layer or the second polymeric layer and is optionally specified for a third class of chemical resistance.

Abstract: Provided among other things is a breach or contamination indicating elastomeric article for indicating a breach or contamination by a selected chemical or group of chemicals, the article having an exterior and interior and comprising: (a) an interior elastomeric layer selected to resist permeation by the selected chemical(s), which interior layer is colored; and (b) a contiguous or dis-contiguous indicating layer comprising solid particles of hydrophobic dye effective to provide enhanced color on contacting hexane, cyclohexane, xylene, ethyl ether, butyl acetate, MIBK, methanol, acetonitrile and acetic acid; wherein the distribution of the indicating layer provides for a visually noticeable color change against the background of the colored interior elastomeric layer upon a breach or contamination event by a selected chemical.

Abstract: A supported or unsupported glove that includes a polymeric layer, comprised of a polymeric composition having thermally conductive particles disposed within the polymeric layer.

Abstract: A method to produce hydrazide from triacylglycerol, the method includes steps of mixing vegetable oil with an organic solvent in a reactor forming a mixture, adding hydrazinemonohydrate into the mixture, stirring the mixture, adding catalyst, stirring the mixture to form hydrazide and separating the hydrazide from the mixture.

Abstract: Provided, among other things, is a breach or contamination indicating elastomeric article for indicating a breach or contamination by a selected chemical or group of chemicals, the article having an exterior and interior and comprising: (1) an interior elastomeric layer selected to resist permeation by the selected chemical(s); and (2) exterior thereto, a contiguous or dis-contiguous first indicating layer comprising a dye or pigment and an opacifying agent, the dye or pigment providing the layer with color, the first indicating layer changing color and/or opacity when contacted with a selected chemical such regions of the article where the layer is so contacted contrast with non-contacted regions. A subsequent, interior layer can provide a safety buffer allowing for removal or disposal prior to any potential for harm. A second, interior indicating layer can be used to make the warning louder when a serious breach is occurring.