Abstract: The present invention relates to new impact modifiers and a process for making these new impact modifiers and their use in polymeric compositions. More particularly the present invention relates to a new polymeric impact modifier with a core-shell structure made by a multistage polymerization process comprising at least one gradient polymer. The present invention relates as well to a process preparing such an impact modifier, especially its recovery process after the end of the polymerization. The present invention also relates to a thermoplastic composition comprising the new impact modifier.

Abstract: The invention relates to metastable polymer compositions, use thereof for manufacturing medical devices or medical device components having a slippery surface as well as the devices with slippery surfaces resulting from these metastable polymer compositions, in particular in the field of ophthalmic injectors.

Abstract: The invention relates to thermoplastic moulding materials based on acrylonitrile-butadiene-styrene, comprising a SAN-polymer matrix and a graft copolymer, structured from an agglomerated butadiene rubber-graft base and a SAN-graft envelope. The agglomerated graft base has a bimodal particle size distribution of a fraction x) of non-agglomerated particles having a d50-value in the range from 80 to 120 nm and a fraction y) of agglomerated particles having a d50-value in the range from 350 to 550 nm and a polydispersity U of less than 0.28. The invention further relates to a method for producing the graft copolymer, wherein an acrylate copolymer having a polydispersity U of less than 0.27 and a d50-value of 100 to 150 nm is used for agglomeration. The invention further relates to the use of thermoplastic moulding materials for producing moulded parts.

Abstract: Improvements to absorbent sheet manufacture include spraying a softener onto the web and providing a creping adhesive to a surface of a heated drying cylinder of a Yankee dryer such that a creping adhesive coating is formed, the creping adhesive comprising a poly(aminoamide)epihalohydrin (PAE) resin and a polyvinyl alcohol copolymer, wherein the polyvinyl alcohol copolymer includes functional repeat units selected from carboxylate repeat units, sulfonate repeat units as well as combinations of the comonomers. A preferred PAE resin is fully crosslinked PAE resin.

Abstract: A vibration damper of the invention is formed from a polymer composition including (a) 100 parts by weight of a block copolymer including a polymer segment mainly derived from a vinyl aromatic compound and a polymer segment mainly derived from a conjugated diene compound, or a hydrogenated product of the copolymer, (b) 30 to 200 parts by weight of an ethylene.?-olefin copolymer having a kinematic viscosity at 100° C. of 300 to 5000 mm2/s and an ethylene structural unit content of 30 to 80 mol %, and (c) 0 to 100 parts by weight of a polyolefin resin having a MFR of 0.1 to 500 g/10 min. According to the present invention, vibration dampers are provided which exhibit excellent vibration damping properties and transparency and show excellent weather resistance with little discoloration, and polymer compositions are provided which are suited for the production of vibration dampers having excellent vibration damping properties and weather resistance.

Abstract: Click reactions may be used to bond polymers to lignin by taking advantage of lignin's terminal hydroxyl and thiol groups via an alkyne-azide click reaction or a thiol-alkene or thiol-alkyne click reaction. By selecting functional polymers, these methods may be used to synthesize lignin-containing polymer materials with an array of different properties, such as self-healing polymers.

Abstract: A natural rubber-containing thermoplastic resin composition includes a graft copolymer (A) obtained by graft-polymerizing a vinyl monomer mixture (a) including at least an aromatic vinyl monomer to a rubbery polymer (R) composed of 10 to 70% by mass of a natural rubber having a weight average particle size of 0.3 to 1.2 ?m and 30 to 90% by mass of a synthetic rubber having a weight-average particle size of 0.2 to 0.4 ?m, wherein particles of the natural rubber include not less than 5% by mass of natural rubber articles with a size of 1.0 ?m or larger; and particles of the rubbery polymer (R) with a size of 1.0 ?m or larger have an internal graft ratio of 20% or higher.

Abstract: The present invention relates to an optical film and method of manufacturing the same. The optical film of the present invention includes an acrylic resin and a core-shell type graft copolymer wherein the core includes a conjugate diene rubber, and the shell includes an acrylic monomer, an aromatic vinyl monomer, and a maleimide monomer.

Abstract: A directed self-assembling composition for pattern formation includes a block copolymer. The block copolymer includes a polystyrene block having a styrene unit, and a polyalkyl (meth)acrylate block having an alkyl (meth)acrylate unit. The block copolymer has a group that is bound to at least one end of a main chain of the block copolymer and that includes a hetero atom.

Abstract: The present invention relates to a method for preparing a weather resistant reinforced acrylate based resin. More specifically, an activator-free conversion rate improver is included in an acrylate-styrene based graft copolymer, thereby improving the haze value, light transmittance, and yellow index when mixed with an acrylate-styrene based non-graft copolymer, and securing the weather resistance. In particular, according to the present invention, a weather resistant reinforced thermoplastic resin having excellent colors which are close to natural colors can be provided even without using sodium formaldehyde sulfoxylate (SFS) and iron ions.

Abstract: Provided is a copolymer of a conjugated diene compound and a non-conjugated olefin, the copolymer being a tapered copolymer including: at least one of a block sequence including monomer units of the conjugated diene compound and a block sequence including monomer units of the non-conjugated olefin; and a random sequence including randomly arranged monomer units of the conjugated diene compound and monomer units of the non-conjugated olefin.

Abstract: A flexible tubing material includes a radiation crosslinked blend of a first elastomeric polymer including a styrenic thermoplastic elastomer, an ethylene vinyl acetate elastomer, a polylefin elastomer with a second elastomeric polymer including a polyolefin elastomer, a diene elastomer, or combination thereof, with the proviso that the first elastomeric polymer and the second elastomeric polymer are different. In an embodiment, a method of making a material includes providing the first elastomeric polymer, providing the second elastomeric polymer, blending the first elastomeric polymer and the second elastomeric polymer, extruding or injection molding the blend, and crosslinking the blend with radiation.

Abstract: An injection stretch blow molded article may include a Ziegler-Natta catalyzed polyethylene resin having a multimodal molecular weight distribution and including at least two polyethylene fractions A and B. Fraction A may have a higher molecular weight and a lower density than fraction B. Each fraction may be prepared in different reactors of at least two reactors connected in series. Fraction A may have a melt index HL275 of at least 11 g/10 min and of at most 20 g/10 min, and a density of at least 941 kg/m3 and of at most 946 kg/m3. The polyethylene resin may have a melt index MI2 of at least 1.5 g/10 min and of at most 3.0 g/10 min, and a density of at least 950 kg/m3 and of at most 965 kg/m3.

Abstract: Provided is a cyclic olefin resin composition film having a small in-plane retardation and high toughness. The cyclic olefin resin composition film contains a cyclic olefin resin and a styrene elastomer having a storage modulus of lower than 100 MPa at 0° C. to 100° C. The styrene elastomer is dispersed in the cyclic olefin resin in an amount of 5 to 35 wt %. With this configuration, it is possible to lower the in-plane retardation of the film while ensuring the high toughness of the film.

Abstract: Disclosed is a method of preparing a rubber-reinforced graft copolymer and a rubber-reinforced graft copolymer prepared using the method. According to the present disclosure, provided is a method of preparing an ?-methylstyrene-based rubber-reinforced graft copolymer which may enhance polymerization productivity and heat resistance, and a rubber-reinforced graft copolymer prepared using the method.

Abstract: Recycle of a stream comprising C8 oligomers to an oligomerization zone to be oligomerized with C4 olefins can produce diesel range oligomers. A diesel stream can be separated from a gasoline stream which can be recycled to the oligomerization zone.

Abstract: A directed self-assembling composition for pattern formation includes a block copolymer. The block copolymer includes a polystyrene block having a styrene unit, and a polyalkyl (meth)acrylate block having an alkyl (meth)acrylate unit. The block copolymer has a group that is bound to at least one end of a main chain of the block copolymer and that includes a hetero atom.

Abstract: An electrically conductive polyamide composition includes specific amounts of a polyamide-6, a poly(phenylene ether), talc, a hydrogenated block copolymer, carbon nanotubes, and a compatibilizing agent for the polyamide-6 and the poly(phenylene ether). The composition can contain little or no polyamide-6,6. The composition is useful for fabricating articles including automotive exterior side sill panels, and automotive exterior door panels.

Abstract: Process for the production of asymmetric, star-branched block copolymers which comprise, incorporated into the polymer, from 60 to 95% by weight of vinylaromatic and from 40 to 5% by weight of a conjugated diene having from 4 to 5 C atoms, based on the branched block copolymer, via sequential anionic polymerization and subsequent coupling of the resultant living block-copolymer anions by a coupling agent, and also vinylaromatic-diene block copolymers obtainable via the process and use of these for moldings and for thermoforming foils.

Abstract: This invention relates to lactam/vinyl alcohol copolymers, and more specifically, to hydrophobic cross-linkable acetoacetylated lactam/vinyl alcohol copolymers suitable for use in a variety of applications including printing, inks, membranes, coatings, adhesives, oil treatment chemicals (such as gas and kinetic hydrate inhibitors), and fiber/textile treatments.