The present invention relates to a polymer latex for dip-molding applications obtainable by free-radical emulsion polymerization of a mixture of ethylenically unsaturated monomers comprising at least one conjugated diene and at least one ethylenically unsaturated nitrile compound in an aqueous medium in presence of seed latex particles having a glass transition temperature (mid point temperature Tmg) measured by DSC according to ASTM D3418-03 of ?50? C. to 50? C. wherein the seed latex particles do not contain structural units derived from ethylenically unsaturated nitrile compounds, to a method of preparing said polymer latex, to articles made by using said polymer latex and to a method for preparing dip-molded articles from said polymer latex.

Articles with thin caliper melt coatings of high molecular weight, high viscosity materials and methods of making such coatings.

Articles with thin caliper melt coatings of high molecular weight, high viscosity materials and methods of making such coatings.

The present invention provides polymer compositions containing a block copolymer having a formula A-B-A, wherein the block A is a vinyl aromatic block and the block B is a hydrogenated conjugated diene block, and compounds made from the polymer compositions. The block copolymer exhibits excellent flow characteristics, which allow it to be molded or extruded to isotropic articles. The present invention also provides films and molded articles therefrom.

A polymer network for 3D printing has a first polymer and a second polymer. The first polymer and the second polymer are crosslinked by a photo-crosslink. The first polymer and the second polymer are independently selected from polylactic acid, poly(acrylonitrile butadiene styrene), polystyrene, nylon, high density polyethylene, polycarbonate, polyvinyl alcohol, polyethylene terephthalate, and thermoplastic polymers.

A composition for applying onto a road surface and methods for making thereof is disclosed. The composition comprises a binder material of at least a styrenic block copolymer and a resin, which can be pelletized. The SBC is selected from a styrene-isoprene-styrene rubber (SIS) and styrene-isoprene/butadiene-styrene (SIBS); or styrene-ethylene/propylene/styrene-styrene (SEPSS), styrene-ethylene/butylene/styrene-styrene (SEBSS) and mixtures thereof. The binder can be used in road marking compositions or surface treatment compositions when combined with other components such as pigments, glass beads, anti-skid media, fillers, waxes, elastomer/plastomer, and plasticizers.

A method and composition for generating a shingle roof coating is described. The method includes oxidizing an asphalt feedstock to a softening point greater than 205 F. and a penetration less than 15 dmm at 77 F. to generate an oxidized asphalt feedstock. The method then proceeds to mix an elastomeric polymer and an asphalt flux to generate a first concentrate. The first concentrate is then heated separately from the oxidized asphalt feedstock. The method then mixes the first concentrate with the oxidized asphalt feedstock and heats the combined first concentrate and the oxidized asphalt feedstock to generate the shingle roof coating. The amount of elastomeric polymer in the first concentrate is adjusted based on the type of asphalt feedstock such that the resulting shingle roof coating includes 0.5% to 6% by weight of the elastomeric polymer.

A method and composition for generating a shingle roof coating is described. The method includes oxidizing an asphalt feedstock to a softening point greater than 205 F. and a penetration less than 15 dmm at 77 F. to generate an oxidized asphalt feedstock. The method then proceeds to mix an elastomeric polymer and an asphalt flux to generate a first concentrate. The first concentrate is then heated separately from the oxidized asphalt feedstock. The method then mixes the first concentrate with the oxidized asphalt feedstock and heats the combined first concentrate and the oxidized asphalt feedstock to generate the shingle roof coating. The amount of elastomeric polymer in the first concentrate is adjusted based on the type of asphalt feedstock such that the resulting shingle roof coating includes 0.5% to 6% by weight of the elastomeric polymer.

A pattern treatment method, comprising: (a) providing a semiconductor substrate comprising a patterned feature on a surface thereof; (b) applying a pattern treatment composition to the patterned feature, wherein the pattern treatment composition comprises: a block copolymer and an organic solvent, wherein the block copolymer comprises: (i) a first block comprising a first unit formed from 4-vinyl-pyridine, and (ii) a second block comprising a first unit formed from a vinyl aromatic monomer; and (c) removing residual pattern shrink composition from the substrate, leaving a coating of the block copolymer over the surface of the patterned feature, thereby providing a reduced pattern spacing as compared with a pattern spacing of the patterned feature prior to coating the pattern treatment composition. The methods find particular applicability in the manufacture of semiconductor devices for providing high resolution patterns.

A composition is disclosed, comprising a block copolymer, at least one homopolymer or copolymer of butene, and at least one olefin homopolymer or copolymer, wherein said block copolymer has hydrogenated low-vinyl polybutadiene end blocks with a specific gravity>0.85 g/cc, and a controlled distribution midblock of polyalkenyl arene/hydrogenated diene. Although the block copolymer has a preferred linear structure as a triblock copolymer, it may also be branched or radial coupled copolymer that has at least 2 arms or more. The composition is useful for rotational molding, slush molding, injection molding, extrusion or compression molding, or thermoforming or calendering for making articles that are resistant to chemicals such as diesel fuel, for the automotive market, for example. The MFR of the block copolymer is 1 to about 50 g/10 min. at 230 C., with a wt. of 2.16 kg.