Abstract:
A method of preparing a high impact polystyrene comprising contacting styrene monomer, a high cis polybutadiene elastomer, and an initiator under high shear within a reaction zone. A high-impact polystyrene comprising a high cis polybutadiene elastomer. A method of preparing a high impact polystyrene comprising contacting styrene monomer, a high cis polybutadiene elastomer, and an initiator under extreme reaction conditions within a reaction zone.
Abstract:
An insulation system of a building having a plurality of spaced-apart support members has an insulator with a plurality of ribs are formed thereon. A concave portion of each rib receives one of the support members. A panel covers, and is secured to the support members. An exterior covering element is secured to an exterior side of the panel. A radiant heat barrier is bonded between the insulator and the panel. The insulator defines air ventilation channels between the foam insulator and the panel for venting air from building. An insulator assembly for a building has a sheet of foam insulation with a plurality of channels intermittently formed in the sheet of insulation. Each channel has a concave side and a convex side. The concave side is adapted to receive a support member of the building. A radiant heat barrier is bonded to a surface of the foam insulation.
Abstract:
A method for the in-situ preparation of an ionic comonomer, such as zinc dimethacrylate, dissolved in styrene monomer, for use in production of polystyrene is disclosed. The method generally includes adding comonomer chemical precursors to a solution of styrene and nonionic surfactant. The resulting ionic comonomer may be further dissolved in styrene and polymerized to form a product that may have improved properties.
Abstract:
A method comprising irradiating a donor molecule with light to form an activated donor molecule, contacting the activated donor molecule with an acceptor molecule to form an activated acceptor molecule, and contacting the activated acceptor molecule with a substrate to generate an oxidized substrate, wherein the donor molecule is in the solid phase and the activated acceptor molecule is in the gas phase.
Abstract:
A method of preparing a high impact polystyrene comprising contacting styrene monomer, a high cis polybutadiene elastomer, and an initiator under high shear within a reaction zone. A high-impact polystyrene comprising a high cis polybutadiene elastomer. A method of preparing a high impact polystyrene comprising contacting styrene monomer, a high cis polybutadiene elastomer, and an initiator under extreme reaction conditions within a reaction zone.
Abstract:
An insulation system of a building having a plurality of spaced-apart support members has a insulator with a plurality of ribs are formed thereon. A concave portion of each rib receives one of the support members. A panel covers and is secured to the support members. An exterior covering element is secured to an exterior side of the panel. A radiant heat barrier is bonded between the insulator and the panel. The insulator defines air ventilation channels between the foam insulator and the panel for venting air from building. An insulator assembly for a building has a sheet of foam insulation with a plurality of channels intermittently formed in the sheet of insulation. Each channel has a concave side and a convex side. The concave side is adapted to receive a support member of the building. A radiant heat barrier is bonded to a surface of the foam insulation.
Abstract:
A photoperoxidation process including irradiating a donor molecule with light from a light source to form an activated donor molecule, contacting the activated donor molecule with an acceptor molecule to form an activated acceptor molecule, and contacting the activated acceptor molecule with a diene elastomer in a vessel to form a singlet oxygen functionalized elastomer molecule. The singlet oxygen functionalized elastomer can be mixed with a styrenic monomer and subjected to a polymerization reaction to obtain a high impact polystyrene composition
Abstract:
A method of producing a polymer and layered compound composition having a high degree of exfoliation of the layered compound is disclosed. The layered compound is treated with chemicals having an affinity with the polymer or the monomer of the polymer. The monomer and the layered compound can be combined prior to polymerization. The polymer and layered compound can be combined by solution mixing in a solvent. The layered compound can also be incorporated into the mixture by compounding a polymer product with the layered compound.
Abstract:
A method of improving the color of a high impact polystyrene comprising preparing a reaction mixture comprising styrene, elastomer and at least one antioxidant, and introducing to the reaction mixture a color improving additive prior to the addition of any oxidizing agents to the reaction mixture. A high impact polystyrene comprising a color improving additive, an elastomer and at least one antioxidant wherein the color improving additive is present in the reaction process for production of the high impact polystyrene prior to the introduction of an oxidizing agent and wherein the high impact polystyrene has a 50% to 200% reduction in the Yellowness index as determined in accordance with ASTM E 313 when compared to an otherwise identical polystyrene lacking a color improving additive.
Abstract translation:一种改善高抗冲聚苯乙烯颜色的方法,包括制备包含苯乙烯,弹性体和至少一种抗氧化剂的反应混合物,并在向反应混合物中加入任何氧化剂之前向反应混合物中引入增色剂。 包含改色添加剂,弹性体和至少一种抗氧化剂的高抗冲聚苯乙烯,其中在引入氧化剂之前,用于生产高抗冲聚苯乙烯的反应过程中存在改色添加剂,其中高抗冲聚苯乙烯具有 当与没有改色添加剂的其他相同的聚苯乙烯相比时,根据ASTM E 313测定的黄度指数降低50%至200%。
Abstract:
A method for the in-situ preparation of an ionic comonomer, such as zinc dimethacrylate, dissolved in styrene monomer, for use in production of polystyrene is disclosed. The method generally includes adding comonomer chemical precursors to a solution of styrene and nonionic surfactant. The resulting ionic comonomer may be further dissolved in styrene and polymerized to form a product that may have improved properties.