Abstract: The present application relates to microcarrier particles for cell culture, a method for preparing the particles, and a cell culture medium composition including the particles. According to the present application, a microcarrier having a high degree of uniformity in shape or form, having porosity, and advantageous for cell attachment and isolation of cultured cells is provided.

Abstract: The present invention relates to a polymer composition including a linear polymer including a stress visualization molecule positioned at a center portion of a chain and including a furan group; and a cross-linking agent that is an amine having two or more maleimide functional groups, and a cross-linkable polymer formed therefrom.

Abstract: Amphiphilic copolymers and compositions including amphiphilic copolymers. The amphiphilic copolymers include modified maleimide subunits, for example, as illustrated by the structures of Formula IA and Formula IB. The compositions form water-soluble complexes upon association with biological material wherein such biological material can include lipids or membrane proteins. Methods for producing, purifying, analyzing, and using the compositions and complexes are provided.

Abstract: Biaxially orientated film containing a) 1 to 25 percent by weight of at least 2 cyclic olefin polymers with a glass transition temperature in the range of 120 to 180° C. and b) 75 to 99 percent by weight of at least one semi-crystalline alpha-olefin polymer with a crystallite melting temperature in the range of 150 to 170° C., wherein the film contains at least a first cyclic olefin polymer and a second cyclic olefin polymer, wherein the second cyclic olefin polymer has a higher glass transition temperature than the first cyclic olefin polymer and wherein the weighted arithmetic mean of the glass transition temperatures of all the cyclic olefin polymers contained in the film is smaller than or equal to the weighted arithmetic mean of the crystallite melting temperature of all the semi-crystalline alpha-olefin polymers contained in the film.

Abstract: This disclosure relates to ethylene interpolymer products comprising a Melt Flow-Intrinsic Viscosity Index value, MFIVI, of from ?0.05 to ?0.80; a first derivative of a melt flow distribution function, formula (I) of form ??1.85 to ??1.51; an unsaturation ratio, UR, of from >0.06 to ?0.60; and a residual catalytic metal of from ?0.03 to ?5 ppm of hafnium. Ethylene interpolymer products comprise at least two ethylene interpolymers. Ethylene interpolymer products are characterized by a melt index (I2) from 0.3 to 500 dg/minute, a density from 0.855 to 0.975 g/cc and from 0 to 25 mole percent of one or more a-olefins. Ethylene interpolymer products have polydispersity, Mw/Mn, from 1.7 to 25; and CDBI50 values from 1% to 98%. These ethylene interpolymer products have utility in flexible and rigid applications.

Abstract: Methods for forming polyolefin nanocomposite precursor compositions are provided. In embodiments, such a method comprises mixing a polyolefin, unmodified graphite, and a peroxide crosslinker via solid-state shear pulverization under conditions to form a polyolefin nanocomposite precursor composition comprising the polyolefin; exfoliated, unmodified graphite dispersed throughout the polyolefin; and unreacted peroxide crosslinker dispersed throughout the polyolefin, wherein the polyolefin is polyethylene, a copolymer of polyethylene, or combinations thereof. Methods of forming crosslinked polyolefin nanocomposites, the polyolefin nanocomposite precursor compositions, and crosslinked polyolefin nanocomposites are also provided.

Abstract: Provided is a sulfur-containing unsaturated hydrocarbon polymer which can improve wet grip performance and fuel efficiency of a tire in a well-balanced manner by being blended into a rubber composition for a tire. A sulfur-containing unsaturated hydrocarbon polymer of the present invention is a reaction product obtained by reacting sulfur with an unsaturated bond in a polymer of an unsaturated hydrocarbon.

Abstract: Provided are a liquid hydrocarbon production method for obtaining a liquid hydrocarbon-containing rubber composition, including heating a crosslinked rubber at 300° C. or lower in a reaction solvent that contains an aldehyde having a hydrocarbon group with 2 or more carbon atoms and having a boiling point of 230° C. or lower; as well as a re-crosslinked rubber obtained from the rubber composition produced in the production method, and a tire and a rubber industrial product. According to the liquid hydrocarbon production method, a liquid hydrocarbon having a higher molecular weight can be produced at a high decomposition proportion even under mild conditions.

Abstract: Articles comprising pressure-sensitive adhesives and methods of their use for removing micro- and nanoplastic particles from various media, including wastewater effluent, laundry effluent, and indoor air, are disclosed.

Abstract: Imide-linked polymeric photoinitiators and compositions useful in the preparation of such polymeric photoinitiators and to the use of these polymers in, e.g., UV curable adhesives, UV curable coating compositions and UV curable encapsulants.

Abstract: Provided is a resin composition for forming an optical component, the resin composition including a cyclic olefin-based polymer and an anthraquinone-based dye, in which the cyclic olefin-based polymer includes at least one selected from a copolymer of ethylene or an ?-olefin and a cyclic olefin, and a ring-opening polymer of a cyclic olefin.

Abstract: Disclosed herein are polyesteramide random copolymers having high glass transition temperatures, methods of forming such polymers, devices, formulations, and medical devices containing such polymers, and methods of treating mammals suffering from various conditions using such polymers in combination with a bioactive agent. In an embodiment, the random copolymers may have a Tg above body temperature, about 37° C., and may achieve a longer release duration, different release kinetics, improved barrier properties, or other benefits over polymers with Tg below 37° C.

Abstract: The present invention relates to a process for the hydrogenation of an unsaturated hydrocarbon feedstock comprising: (1) preparing a granular material, wherein the particles of the granular material comprise a hydrogenation catalyst, or a precursor thereof, and one or more organic compounds, wherein the one or more organic compounds comprise one or more carboxlic acid and/or one or more ester and/or one or more ether moieties; (2) providing an unsaturated hydrocarbon feedstock; (3) preparing a mixture comprising the granular material obtained in (1), the unsaturated hydrocarbon feedstock provided in (2), hydrogen gas, and optionally a solvent system; (4) heating the mixture prepared in (3) to a temperature in the range of from 210 to 360° C. for hydrogenating the hydrocarbon feedstock.

Abstract: A thermosetting composition comprising a crosslinkable component such as a vinyl ester and/or an unsaturated polyester, and an initiator component, such as cumene hydroperoxide or BPO or blends of cumene hydroperoxide and methyl ethyl ketone peroxide. The composition is suitable to be used in additive manufacturing to form objects such as molds or prototypes.

Abstract: In various embodiments, a bimodal polyethylene may include a high molecular weight component and a low molecular weight component. The bimodal polyethylene may have a density of from 0.933 grams per centimeter (g/cm3) to 0.960 g/cm3, a melt index (I2) of from 0.3 decigrams per minute (dg/min) to 1.2 dg/min, a melt flow ratio (MFR21) greater than 80.0, a molecular weight distribution (Mw/Mn) greater than 10, a reverse comonomer distribution, and a shear thinning index of from 5.0 to 20.0. Methods for producing the bimodal polyethylene, articles manufactured from the bimodal polyethylene are also provided.

Abstract: Provided by the present invention are a dispersant for suspension polymerization which enables production of vinyl polymer particles having a small particle diameter at a small added amount, a method for producing such a dispersant for suspension polymerization, and a method for producing vinyl polymer particles by using such a dispersant for suspension polymerization.

Abstract: The present invention relates to a modified conjugated diene-based polymer having excellent affinity with a filler and a method for preparing the same, and provides a modified conjugated diene-based polymer including: a first chain comprising a repeating unit derived from a conjugated diene-based monomer; and one or more graft chains comprising a derived unit from an oligomer and graft-bonded to the first chain, wherein the derived unit from an oligomer comprises a residual group derived from a radical reactive functional group, and a molecular weight distribution increase ratio defined by Mathematical Equation 1 is 20% or less, and a method for preparing the same.

Abstract: The diimide hydrogenation of unsaturated elastomers in latex utilizing hydrazine and hydrogen peroxide or oxygen, is a metal-catalyzed process. Copper ion has been found to be the most superior catalyst for this reaction, requiring an extremely low concentration for optimal results. Generated diimide efficiently hydrogenates the polymer olefinic unsaturation while generating water and nitrogen as byproducts. With a falling hydrazine concentration during the hydrogenation process however, a competing copper-catalyzed process capable of generating hydroxyl, superoxide and/or copper-oxyl radicals becomes increasingly competitive. The ability of these radical species to abstract hydrogen from the polymer backbone to generate polymeric radicals, ultimately results in crosslinking that occurs concurrently with hydrogenation. The concept of an OH radical inactivating ligand (OIL) complexed with copper is demonstrated to ameliorate the crosslinking reaction.

Abstract: A resin composition that contains: (A) a bio-polyethylene resin; (B) an ethylene-vinyl alcohol copolymer having an ethylene content of 20 to 60 mol %; and (C) at least one component selected from the group consisting of an ethylene-vinyl acetate copolymer, an acid-modified ethylene-?-olefin copolymer, an ethylene-unsaturated monocarboxylic acid copolymer, an ionomer of the ethylene-unsaturated monocarboxylic acid copolymer, an ethylene-vinyl alcohol copolymer having an ethylene content of 70 to 90 mol %, and a hydrotalcite compound. The resin composition employs a bio-polyethylene resin and yet can suppress gumming and provide a formed product having an excellent appearance.

Abstract: A vitrimer composition includes a first plurality of polymer backbones cross-linked with cross-linkers that include at least one siloxane moiety having formula 1: wherein R1, R2, R3, and R4 are each independently H or C1-6 alkyl. A catalyst that accelerates siloxane exchange is dispersed within the first plurality of polymer backbones.