Abstract: Disclosed herein in is a medical tube comprising a hydrogenated styrenic block copolymer having a formula A-B-A, (A-B-A)nX or (A-B)nX is disclosed, where n is an integer from 2 to 30, and X is residue of a coupling agent. Prior to hydrogenation, each A block is a monoalkenyl arene homopolymer block having a true peak molecular weight of 5 kg/mol to 15 kg/mol. Each B block is a controlled distribution copolymer block having a true peak molecular weight of 30 kg/mol to 200 kg/mol. The hydrogenated styrenic block copolymer has a midblock poly(monoalkenyl arene) content of 35 wt. % to 50 wt. % based on the total weight of the midblock, and physical properties that makes it useful for producing medical tubes having kink resistance.

Abstract: A coupled block copolymer composition with a combination of high viscosity at manufacturing, finishing and handling conditions, low viscosity at asphalt blending conditions and suitable viscosity stability is provided for use in asphalt compositions. The composition comprises: (i) a diblock copolymer, (ii) at least a linear triblock copolymer having a peak molecular weight that is 1.5 to 3.0 times the peak molecular weight of the diblock copolymer, and (iii) at least a multiarm coupled block copolymer having a peak molecular weight that is 1.5 to 9.0 times the peak molecular weight of the diblock copolymer, and mixtures thereof. The block copolymer composition is characterized as having a melt viscosity at 110° C. or less of greater than 2.0E7 Poise and a coupling efficiency after 24 hours at 180° C. is less than 25%.

Abstract: The invention relates to a hot melt adhesive composition that, when used as an elastic attachment adhesive (EAA), provides elastic laminates having an initial creep performance of less than 25%. The composition comprises a selectively hydrogenated, high vinyl block copolymer having the structure SEBS or (SEB)nX amorphous polyolefin such as polyethylene, polypropylene, butylene homopolymers and copolymers, or a mixture of two or more of these, tackifier, and maleated polypropylene oligomer or maleated SEBS.

Abstract: A styrenic triblock copolymer composition with a combination of excellent tensile strength and high melt index, excellent for manufacturing, finishing and handling, forming stable pellets, for use in applications including but not limited to adhesive, coating, and flexographic printing. The composition comprises a first block which is a polymer of a monoalkenyl arene; a second block which is polymer of a conjugated diene and a third block which is a polymer of a monoalkenyl arene wherein a peak molecular weight of the third block is from about 0.06 to about 0.4 times that of the first block.

Abstract: An adhesive composition comprising: one or more block copolymers and one or more tackifying resins, wherein said one or more block copolymers comprise (i) one or more blocks of polymerized alkenyl arene monomer (A block), (ii) one or more blocks of polymerized conjugated diene monomer (B block), and optionally at least one low molecular weight (compared to B block) block of polymerized conjugated diene (C block), where the A, B, and C blocks can vary independent of each other with regard to composition and molecular weight.

Abstract: Disclosed herein in is a medical tube comprising a hydrogenated styrenic block copolymer having a formula A-B-A, (A-B-A)nX or (A-B)nX is disclosed, where n is an integer from 2 to 30, and X is residue of a coupling agent. Prior to hydrogenation, each A block is a monoalkenyl arene homopolymer block having a true peak molecular weight of 5 kg/mol to 15 kg/mol. Each B block is a controlled distribution copolymer block having a true peak molecular weight of 30 kg/mol to 200 kg/mol. The hydrogenated styrenic block copolymer has a midblock poly(monoalkenyl arene) content of 35 wt. % to 50 wt. % based on the total weight of the midblock, and physical properties that makes it useful for producing medical tubes having kink resistance.

Abstract: The present disclosure relates to polyoxyalkyleneamine (“POA”) modified sulfonated block copolymers, their preparation and their use as emulsifiers as well as materials for flexible and pressure-adhesive membranes, films and coatings.

Abstract: A styrenic triblock copolymer composition with a combination of excellent tensile strength and high melt index, excellent for manufacturing, finishing and handling, forming stable pellets, for use in applications including but not limited to adhesive, coating, and flexographic printing. The composition comprises a first block which is a polymer of a monoalkenyl arene; a second block which is polymer of a conjugated diene and a third block which is a polymer of a monoalkenyl arene wherein a peak molecular weight of the third block is from about 0.06 to about 0.4 times that of the first block.

Abstract: A coupled block copolymer composition with a combination of high viscosity at manufacturing, finishing and handling conditions, low viscosity at asphalt blending conditions and suitable viscosity stability is provided for use in asphalt compositions. The composition comprises: (i) a diblock copolymer, (ii) at least a linear triblock copolymer having a peak molecular weight that is 1.5 to 3.0 times the peak molecular weight of the diblock copolymer, and (iii) at least a multiarm coupled block copolymer having a peak molecular weight that is 1.5 to 9.0 times the peak molecular weight of the diblock copolymer, and mixtures thereof. The block copolymer composition is characterized as having a melt viscosity at 110° C. or less of greater than 2.0E7 Poise and a coupling efficiency after 24 hours at 180° C. is less than 25%.

Abstract: An adhesive composition comprising: one or more block copolymers and one or more tackifying resins, wherein said one or more block copolymers comprise (i) one or more blocks of polymerized alkenyl arene monomer (A block), (ii) one or more blocks of polymerized conjugated diene monomer (B block), and optionally at least one low molecular weight (compared to B block) block of polymerized conjugated diene (C block), where the A, B, and C blocks can vary independent of each other with regard to composition and molecular weight.

Abstract: A core unit for an energy recovery system for exchanging heat and vapor between two independent intake and exhaust airstreams without intermixing thereof, the core unit having a fibrous microporous support substrate and a sulfonated block copolymer having at least one end block A and at least one interior block B wherein each A block contains essentially no sulfonic acid or sulfonate ester functional groups and each B block is a polymer block containing from about 10 to about 100 mol percent sulfonic acid or sulfonate ester functional groups based on the number of monomer units, and wherein the sulfonated block copolymer is laminated on the microporous support substrate.

Abstract: The invention relates to a hot melt adhesive composition that, when used as an elastic attachment adhesive (EAA), provides elastic laminates having an initial creep performance of less than 25%. The composition comprises a selectively hydrogenated, high vinyl block copolymer having the structure SEBS or (SEB)nX amorphous polyolefin such as polyethylene, polypropylene, butylene homopolymers and copolymers, or a mixture of two or more of these, tackifier, and maleated polypropylene oligomer or maleated SEBS.

Abstract: The invention relates to unique applications for the novel high melt flow, low viscosity, selectively hydrogenated styrene-butadiene-styrene (hSBS) or selectively hydrogenated controlled distribution styrene-butadiene/styrene-styrene (hSBSS) block copolymers, wherein the melt flow rate of said block copolymer is at least 100 g/10 min at 230° C. under 2.16 kg mass according to ASTM D1238. These block copolymers are novel and have the highest melt flow rate of any styrenic block copolymer also possessing high strength and elasticity. It has applications that prior to the present invention were not normally possible due to the normal low melt flow rate of styrenic block copolymers. The present invention also encompasses various fields of use such as a fiberglass hSBS or hSBSS reinforced mat, low viscosity hSBS or hSBSS coatings for industrial uses, hot melt adhesives prepared from hSBS or hSBSS blended with polyalpha-olefins, and elastic film, fiber, and nonwoven constructions using hSBS or hSBSS.

Abstract: The present disclosure relates to polyoxyalkyleneamine (“POA”) modified sulfonated block copolymers, their preparation and their use as emulsifiers as well as materials for flexible and pressure-adhesive membranes, films and coatings.

Abstract: The present invention provides a low viscosity block copolymer for non-wovens construction adhesives of the formula [A?(A/B)]nX, wherein A represents an aromatic vinyl compound and (A/B) represents a polymer block obtained by random copolymerization of a mixture of a aromatic vinyl compound and butadiene in a weight ratio in the range of from 2:98 to 30:70, wherein n is an integer in the range of from 1 to 5, and wherein X is the remainder of the coupling agent.

Abstract: A core unit for an energy recovery system for exchanging heat and vapor between two independent intake and exhaust airstreams without intermixing thereof, the core unit having a fibrous microporous support substrate and a sulfonated block copolymer having at least one end block A and at least one interior block B wherein each A block contains essentially no sulfonic acid or sulfonate ester functional groups and each B block is a polymer block containing from about 10 to about 100 mol percent sulfonic acid or sulfonate ester functional groups based on the number of monomer units, and wherein the sulfonated block copolymer is laminated on the microporous support substrate

Abstract: The present invention provides a low viscosity block copolymer for non-wovens construction adhesives of the formula [A?(A/B)]nX, wherein A represents an aromatic vinyl compound and (A/B) represents a polymer block obtained by random copolymerization of a mixture of a aromatic vinyl compound and butadiene in a weight ratio in the range of from 2:98 to 30:70, wherein n is an integer in the range of from 1 to 5, and wherein X is the remainder of the coupling agent.

Abstract: Less expensive adhesive compositions having good adhesive properties can be achieved by combining an S-I-S or (SI)nX block copolymers with an S-(I/B) diblock copolymer and a single tackifying resin. Furthermore, less expensive adhesive compositions can be achieved by combining S-I diblock copolymers with S-(I/B)-S or [S(I/B)]nX block copolymers and a single tackifying resin. These combinations result in lower costs of starting materials and manufacturing due to simpler processing.

Abstract: A block terpolymer for use in photocurable compositions, flexographic printing plates or hot melt adhesives having a molecular structure according to the general formula: A-I-B-I-A??(1) or (A-I-B)n-X??(2), wherein each A is independently a polymer block of predominantly an aromatic vinyl compound, each I is predominantly isoprene, each B is predominantly butadiene, n is an integer equal to or greater than 2, and X is the residue of a coupling agent, and wherein: (a) the weight ratio of I to B is in a range of 30:70 to 70:30; (b) the aromatic vinyl compound content of the block copolymer is from about 14 to about 45%; (c) the B block has a 1,2-vinyl bond content in the range of from about 20 to about 90 mol %; (d) the A block has an apparent molecular weight in the range of from about 5,000 to about 20,000, and the I and B blocks together have a molecular weight in the range of from about 50,000 to about 200,000; (e) uncoupled triblock, S-I-B in the range of from about 2% to about 60%.

Abstract: The invention relates to an adhesive composition comprising (i) one or more styrenic block copolymer compositions, (ii) a tackifier resin, and (iii) one or more plasticizers, wherein said styrenic block copolymer composition comprises: a. a tetra-branched block copolymer (IV) represented by the general formula (A-B)4X; b. a tri-branched block copolymer (III) represented by the general formula (A-B)3X; c. a di-branched block copolymer (II) represented by the general formula (A-B)2X; and d. a linear diblock copolymer (I) represented by the general formula A-B; where: i. A represents a polymer block of a mono alkenyl arene; ii. B represents a polymer block of a mixture of isoprene and 1,3-butadiene in a weight ratio of isoprene to butadiene from about 70:30 to about 40:60; iii. X represents the residue of a multi-functional coupling agent; iv. the weight percent of A blocks is from about 14% to about 22%; v.