Abstract: The disclosure provides a hydrogenated coupled radial styrenic copolymer having three or more polymeric arms radiating from a polyalkenyl coupling agent. Each arm comprises a hydrogenated styrene-butadiene copolymer segment containing vinyl-aromatic and hydrogenated diene-derived units. The coupled radial copolymer functions as a viscosity-index improver and shear-stability enhancer, imparting high viscosity index and reduced viscosity loss to the composition. The hydrogenated coupled radial styrenic copolymer functions as a viscosity index improver in oil compositions, particularly bio-based oil concentrates (composition). The oil concentrate may be further diluted with additional bio-based oils or fossil-based oils to form lubricant or functional-fluid formulations exhibiting improved viscosity retention, oxidative resistance, and thermal stability.

Abstract: A composition comprising selectively hydrogenated block copolymers (a) and (b having peak molecular weights of 150-1,000 kg/mol, 6-60 kg/mol, respectively, is disclosed. Component (a) comprises one or more structures A-B-A, (A-B-A)nX, A-(B-A)n, and (A-B)nX. Component (b) comprises one or more structures C-D, D-C-D, and (D-C)nX. The value of “n” is 1-30, and “X” is a residue of a coupling agent. Before hydrogenation, blocks A and C, are vinyl aromatic polymer blocks; and blocks B and D are polymer blocks comprising 60-100 mol % of one or more conjugated dienes and 0-40 mol % of a vinyl aromatic monomer. The HSBC compositions and TPE blends exhibits good elasticity, good processability, low extractables, and low compression set.

Abstract: An oil gel compositions comprising (i) between 10 to 20 wt. % of a selectively hydrogenated styrenic block copolymer, (ii) an oil, and (iii) optional additives is described herein. In embodiments, the oil gel composition is characterized as having, a viscosity at 25° C. and 10/s between 100 (See claim 2) and 200 Pa-s, a cone penetration at 25° C. from 200 dmm to 600 dmm, a drop point from 100 to 250° C., and oil separation at 100° C. from 0% to 2%. In embodiments, the oil gel composition has a viscosity ratio of 25° C./100° C. from 4 to 20 at 10/s shear rate. The oil gel composition can be used in cables for post tensioning applications.

Abstract: A composition comprising selectively hydrogenated block copolymers (a) and (b having peak molecular weights of 150-1,000 kg/mol, 6-60 kg/mol, respectively, is disclosed. Component (a) comprises one or more structures A-B-A, (A-B-A)nX, A-(B-A)n, and (A-B)nX. Component (b) comprises one or more structures C-D, D-C-D, and (D-C)nX. The value of “n” is 1-30, and “X” is a residue of a coupling agent. Before hydrogenation, blocks A and C, are vinyl aromatic polymer blocks; and blocks B and D are polymer blocks comprising 60-100 mol % of one or more conjugated dienes and 0-40 mol % of a vinyl aromatic monomer. The HSBC compositions and TPE blends exhibits good elasticity, good processibility, low extractables, and low compression set.

Abstract: A filling composition is disclosed, the composition comprises (i) between 4 to 20 wt. % of a selectively hydrogenated isoprene-styrene block copolymer having a structure S-EP with at least 40 wt. % polystyrene content, a total diblock apparent molecular weight of at least 160 kg/mole, the polystyrene block S has a true molecular weight in the range of 60 to 110 kg/mole, and the polyisoprene block (EP) has a molecular weight in the range of 80-100 kg/mole, (ii) an oil, and (iii) optional additives. The filling composition is characterized as having a thixotropic ratio of 2-10, a drop point of at least 200° C., and a cone penetration at 25° C. of <500 dmm.

Abstract: Selectively hydrogenated block copolymers having semi-crystalline blocks hard blocks and copolymer soft blocks having a combination of excellent physical properties and solvent resistance have been discovered. The block copolymer comprises at least one A block of hydrogenated, polymerized 1,3-butadiene and at least one B block which is a random copolymer or a controlled distribution copolymer of conjugated diene and mono vinyl aromatic monomers in which the conjugated diene monomer units are selectively hydrogenated. Polar functionalized block embodiments of the block copolymers are also disclosed. Compositions comprising the block copolymer and articles made from the block copolymer have also been discovered. A method is disclosed which provides highly isotropic, high strength melt cast films of block copolymers.

Abstract: A filling composition is disclosed, the composition comprises (i) between 4 to 20 wt. % of a selectively hydrogenated isoprene-styrene block copolymer having a structure S-EP with at least 40 wt. % polystyrene content, a total diblock apparent molecular weight of at least 160 kg/mole, the polystyrene block S has a true molecular weight in the range of 60 to 110 kg/mole, and the polyisoprene block (EP) has a molecular weight in the range of 80-100 kg/mole, (ii) an oil, and (iii) optional additives. The filling composition is characterized as having a thixotropic ratio of 2-10, a drop point of at least 200° C., and a cone penetration at 25° C. of <500 dmm.

Abstract: An oil gel compositions comprising (i) between 10 to 20 wt. % of a selectively hydrogenated styrenic block copolymer, (ii) an oil, and (iii) optional additives is described herein. In embodiments, the oil gel composition is characterized as having, a viscosity at 25° C. and 10/s between 100 (See claims 2) and 200 Pa·s, a cone penetration at 25° C. from 200 dmm to 600 dmm, a drop point from 100 to 250° C., and oil separation at 100° C. from 0% to 2%. In embodiments, the oil gel composition has a viscosity ratio of 25° C./100° C. from 4 to 20 at 10/s shear rate. The oil gel composition can be used in cables for post tensioning applications.

Abstract: Selectively hydrogenated block copolymers having semi-crystalline blocks hard blocks and copolymer soft blocks having a combination of excellent physical properties and solvent resistance have been discovered. The block copolymer comprises at least one A block of hydrogenated, polymerized 1,3-butadiene and at least one B block which is a random copolymer or a controlled distribution copolymer of conjugated diene and mono vinyl aromatic monomers in which the conjugated diene monomer units are selectively hydrogenated. Polar functionalized block embodiments of the block copolymers are also disclosed. Compositions comprising the block copolymer and articles made from the block copolymer have also been discovered. A method is disclosed which provides highly isotropic, high strength melt cast films of block copolymers.

Abstract: The present invention provides for a thermoplastic composition that includes from about 40 to about 95 wt. % of a polyamide, and from about 5 to about 30 wt. % of at least one functionalized, selectively hydrogenated block copolymer, including at least one polymer block A, the A block being at least predominantly a polymerized alkenyl arene block, and at least one selectively hydrogenated polymer block B, the B block prior to hydrogenation being at least predominantly a polymerized conjugated diene block to which grafted thereto on the average an effective amount of monomer acids or their derivatives, including maleic acid, succinic acid, itaconic acid, fumaric acid, and acrylic acid. The composition optionally includes from about 5 to about 50 wt. % of a selectively hydrogenated block copolymer.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: The present invention provides an improved block copolymer composition for extruding films having excellent stress relaxation and increased retained tension or load at elevated temperatures, as well as a film cast from this composition.

Abstract: The present invention relates to novel compositions comprising (a) anionic block copolymers of mono alkenyl arenes and conjugated dienes, and (b) tailored softening modifiers have a particular polydispersity index that results in a surprising improvement in properties for the composition. Also included are processes for the manufacturing such novel compositions and various end-uses and applications for such compositions.

Abstract: The present invention relates to novel compositions comprising (a) anionic block copolymers of mono alkenyl arenes and conjugated dienes, and (b) tailored softening modifiers have a particular polydispersity index that results in a surprising improvement in properties for the composition. Also included are processes for the manufacturing such novel compositions and various end-uses and applications for such compositions.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and conjugated diene mid blocks. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: Kink resistant medical tube is manufactured from a polymer composition comprising: a) a random polypropylene copolymer; and b) a block copolymer comprising at least two vinyl aromatic polymer blocks and at least one hydrogenated conjugated diene polymer block, wherein the hydrogenated conjugated diene polymer block has a vinyl content before hydrogenation of at least 50%.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and conjugated diene mid blocks. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: The present invention relates to articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins and engineering thermoplastic resins.

Abstract: The present invention relates to elastomeric articles prepared from novel anionic block copolymers of mono alkenyl arenes and conjugated dienes, and to blends of such block copolymers with other polymers. The block copolymers are selectively hydrogenated and have mono alkenyl arene end blocks and controlled distribution blocks of mono alkenyl arenes and conjugated dienes. The block copolymer may be blended with at least one other polymer selected from the group consisting of olefin polymers, styrene polymers, amorphous resins, and engineering thermoplastic resins.