A modified conjugated diene-based polymer represented by Formula 1, wherein a terminal of a polymer chain is modified, and a method for preparing same are provided. By including a modifier derived unit having a specific structure, a beta value affecting cold flow may be reduced through controlling the degree of branch, and accordingly, the cold flow of a polymer may be efficiently controlled and a mooney viscosity increasing ratio may be improved.

A material for culturing cells is disclosed. The material contains a bulk-modified elastomer having a Shore hardness (DIN EN ISO 868) in a range of Shore00 20 to Shore A 80 and comprising a plurality of fatty acid moieties covalently bound to the elastomer bulk, wherein the carboxylic acid groups of said moieties are available on an external surface of said material to provide said binding, and wherein the bulk-modified elastomer is obtained by forming a composition comprising a vinyl-functionalized or a hydride-functionalized elastomer or at least one precursor thereof, a free of saponified unsaturated fatty acid in a range of 0.5-5% by weight of the total weight of the a vinyl-functionalized or a hydride-functionalized elastomer or at least one precursor thereof and a cross-linking catalyst in a mold having a polar inner surface; and bulk-modifying the vinyl-functionalized or the hydride-functionalized elastomer by covalently binding the free or saponified unsaturated fatty acid to the elastomer bulk in said mold by a cross-linking reaction between a vinyl group or a hydride group of the elastomer and an unsaturated carbon-carbon bond of the unsaturated fatty acid to obtain the material. Also disclosed are a fluidic device module and fluidic device, a cell culturing method and a drug testing method.

A latex of an acid-modified conjugated diene polymer including the acid-modified conjugated diene polymer obtained by modifying a conjugated diene polymer with an acid group-containing compound, in which a content of a structural unit derived from the acid group-containing compound is 0.2 to 0.7 parts by weight with respect to 100 parts by weight of the acid-modified conjugated diene polymer; a content of a water-soluble polymer in the latex is 2 parts by weight or less with respect to 100 parts by weight of the acid-modified conjugated diene polymer; when a solids content of the latex is adjusted to 60 wt %, a viscosity at 25° C. is 800 mPa.Math.s or less; and when the solids content of the latex is adjusted to 50 wt %, the viscosity at 25° C. is 300 mPa.Math.s or less.

Disclosed herein are a terminal-functionalized polymer, rubber compositions containing the polymer, and related processes for preparing the polymer. The functionalizing compound used to prepare the terminal-functionalized polymer has a specified formula which includes a silicon atom and a moiety containing at least two carbon-carbon double bonds in a conjugated configuration.

Disclosed herein are a terminal-functionalized polymer, rubber compositions containing the polymer, and related processes for preparing the polymer. The functionalizing compound used to prepare the terminal-functionalized polymer has a specified formula which includes a silicon atom and a moiety containing at least two carbon-carbon double bonds in a conjugated configuration.

A low viscosity polymer having a linear or branched backbone derived from farnesene monomers and at least one terminal-end functionalized with a hydroxyl group. This polymer may be further hydrogenated to reduce unsaturation and acrylated, such that it may be incorporated into a LOCA composition. The LOCA composition may be used in a laminated screen assembly, such as a touch screen, for electronic devices by adhering the LOCA composition between an optically transparent layer, such as a cover glass, and a display. The cured LOCA composition has a refractive index similar to the optically transparent layer. A method of making the low viscosity polymer for the LOCA composition includes anionically polymerizing farnesene monomers, quenching a living end of the polymer to provide the hydroxyl-terminated polymer; hydrogenating the hydroxyl-terminated polymer; and reacting the at least partially saturated hydroxyl-terminated polymer with at least one reagent to provide an acrylate terminated hydrogenated polymer.

The disclosure describes the preparation and use of reactive carbonates containing a metal carbonate bound to a reactive compound, wherein the reactive compound comprises a mineral binding group and a polymer reactive group connected together by a linking group. Such reactive carbonates are useful as reagents in processes for making mineral-bound elastomeric materials, and in methods for reducing cavitation in elastomer materials.

The disclosure describes the preparation and use of reactive carbonates containing a metal carbonate bound to a reactive compound, wherein the reactive compound comprises a mineral binding group and a polymer reactive group connected together by a linking group. Such reactive carbonates are useful as reagents in processes for making mineral-bound elastomeric materials, and in methods for reducing cavitation in elastomer materials.

A functionalized elastomer comprising the reaction product of a living elastomeric polymer and a polymerization terminator of formula I
[R.sup.1].sub.n—B—[X—R.sup.2].sub.m  I
where B is boron; X is oxygen or nitrogen; R.sup.1 is independently vinyl, oxiranyl, phenyl, 1-alkenyl of 2 to 8 carbon atoms, alkyl of 1 to 8 carbon atoms including at least one halogen atom, 1-alkenyl of 2 to 8 carbon atoms including at least one halogen or one hydrogen; R.sup.2 is independently C1 to C8 alkyl, C8 to C14 aryl; or when m>1 R.sup.2 may be taken together to form a substituted or unsubstituted cyclic structure comprising 2 to 16 carbon atoms where the cyclic structure may be heterocyclic or non-heterocyclic; n is 1 or 2, m is 1 or 2, and n+m=3.

A functionalized elastomer comprising the reaction product of a living elastomeric polymer and a polymerization terminator of formula I
[R.sup.1].sub.n—B—[X—R.sup.2].sub.m  I
where B is boron; X is oxygen or nitrogen; R.sup.1 is independently vinyl, oxiranyl, phenyl, 1-alkenyl of 2 to 8 carbon atoms, alkyl of 1 to 8 carbon atoms including at least one halogen atom, 1-alkenyl of 2 to 8 carbon atoms including at least one halogen or one hydrogen; R.sup.2 is independently C1 to C8 alkyl, C8 to C14 aryl; or when m>1 R.sup.2 may be taken together to form a substituted or unsubstituted cyclic structure comprising 2 to 16 carbon atoms where the cyclic structure may be heterocyclic or non-heterocyclic; n is 1 or 2, m is 1 or 2, and n+m=3.