Abstract: A hydrogenated block copolymer is disclosed comprising a polymer block A and a polymer block B. Prior to hydrogenation, the polymer block A has a first vinyl aromatic compound, and the polymer block B contains monomers a) a styrene compound having a radical reactive group and b) at least one conjugated diene, and optionally (c) a second vinyl aromatic compound that is same or different from the first vinyl aromatic compound. The repeat units of monomer a) forms 10-80 wt. % of the total block copolymer, and 10-70 wt. % of the total weight of block B. After hydrogenation, the polymerized units derived from the monomer b) has a RU of 0-1.5 meq per gram of the hydrogenated block copolymer. The hydrogenated block copolymer exhibits reactivity and higher flow properties before curing, after curing, shows excellent mechanical properties, improved flame resistance, and good solvent resistance.

Abstract: The present invention discloses a novel valve clamping device and a valve clamping system. The valve clamping device includes a first clamping component, a second clamping component, and a fixing component for fixing the first clamping component and the second clamping component. The first clamping component has at least two first clamping arms. The second clamping component has a corresponding number of second clamping arms. Each of the first clamping arms and the corresponding second clamping arm may be combined into a pair of clamps. The clamping device may adopt designs of a smooth transition at the top, the clamping teeth having high clamping stability, and the fixed ring achieving the purpose of “one thread for two uses”.

Abstract: A resin composition that allows production of laminated sheets excellent in heat resistance and processability is disclosed. The resin composition comprises: a) a block copolymer, where the block copolymer comprises at least one polymer block comprising polymerized acyclic conjugated diene units, such as butadiene units, and at least one polymer block containing units like a conjugated cyclic diene such as 1,3-cyclohexadiene or monomer units characterized by unit Tg above 100° C., b) a curing initiator, and c) optionally diene-based polymer selected from a polybutadiene polymer and the copolymer of butadiene with styrene or other styrenic monomers, c) optional additives comprising but not limited to a multi-functional co-curable additive, a diene based rubber, a halogenated or non halogenated flame retardant, an inorganic or organic filler or fiber, an antioxidant, a adhesion promotor, a film forming.

Abstract: A hydrogenated block copolymer is disclosed comprising a polymer block A and a polymer block B. Prior to hydrogenation, the polymer block A has a first vinyl aromatic compound, and the polymer block B contains monomers a) a styrene compound having a radical reactive group and b) at least one conjugated diene, and optionally (c) a second vinyl aromatic compound that is same or different from the first vinyl aromatic compound. The repeat units of monomer a) forms 10-80 wt. % of the total block copolymer, and 10-70 wt. % of the total weight of block B. After hydrogenation, the polymerized units derived from the monomer b) has a RU of 0-1.5 meq per gram of the hydrogenated block copolymer. The hydrogenated block copolymer exhibits reactivity and higher flow properties before curing, after curing, shows excellent mechanical properties, improved flame resistance, and good solvent resistance.

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: The present invention discloses a novel valve clamping device and a valve clamping system. The valve clamping device includes a first clamping component, a second clamping component, and a fixing component for fixing the first clamping component and the second clamping component. The first clamping component has at least two first clamping arms. The second clamping component has a corresponding number of second clamping arms. Each of the first clamping arms and the corresponding second clamping arm may be combined into a pair of clamps. The clamping device may adopt designs of a smooth transition at the top, the clamping teeth having high clamping stability, and the fixed ring achieving the purpose of “one thread for two uses”.

Abstract: A resin composition that allows production of laminated sheets excellent in heat resistance and processability is disclosed. The resin composition comprises: a) a block copolymer, where the block copolymer comprises at least one polymer block comprising polymerized acyclic conjugated diene units, such as butadiene units, and at least one polymer block containing units like a conjugated cyclic diene such as 1,3-cyclohexadiene or monomer units characterized by unit Tg above 100° C.

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: Compositions comprising (i) a hydrogenated styrenic block copolymer, (ii) an oil, and (iii) optional additives are described herein. Compositions include but are not limited to cable fillings. The styrenic block copolymer having peak molecular weight of from about 125 to about 300 kg/mol, an oil and optional additives are described herein. The block copolymer includes a B block having vinyl content of from about 35% to about 49% and an S block having a polystyrene content of from about 28% to about 40%. The compositions may form a gel having a thixotropic ratio at 25° C. of from about 5 to about 10 and further characterized by specific low, middle and high shear rate viscosities at 25° C. and shear rates of 6 s?1, 50 s?1 and 200 s?1 of from 10,000 cps to 750,000 cps, 1,000 cps to 100,000 cps and 1,000 cps to 6,000 cps, respectively; a drop point from 100° C. to 250° C.; and a cone penetration at 25° C. of from 300 dmm to 685 dmm.

Abstract: Compositions comprising (i) a hydrogenated styrenic block copolymer, (ii) an oil, and (iii) optional additives are described herein. Compositions include but are not limited to cable fillings. The styrenic block copolymer having peak molecular weight of from about 125 to about 300 kg/mol, an oil and optional additives are described herein. The block copolymer includes a B block having vinyl content of from about 35% to about 49% and an S block having a polystyrene content of from about 28% to about 40%. The compositions may form a gel having a thixotropic ratio at 25° C. of from about 5 to about 10 and further characterized by specific low, middle and high shear rate viscosities at 25° C. and shear rates of 6 s?1, 50 s?1 and 200 s?1 of from 10,000 cps to 750,000 cps, 1,000 cps to 100,000 cps and 1,000 cps to 6,000 cps, respectively; a drop point from 100° C. to 250° C.; and a cone penetration at 25° C. of from 300 dmm to 685 dmm.

Abstract: A microdomained aqueous emulsion polymer is provided. The polymer comprises a first domain having a Tg of from ?80 to ?10° C. and comprising from 80 to 100 wt % of acrylic monomer; and a non-crosslinked second domain having a Tg of from 50 to 120° C. and comprising, as polymerized unit and based on the weight of the second domain, from 50 to 100 wt % of styrenic monomer; wherein the content of the second domain ranges from greater than 6 wt % to 30 wt % of the total weight of the first domain and the second domain. The polymer is suitable for applications including adhesives and binders, especially for pressure sensitive adhesives.

Abstract: The invention provides an adhesive sheet comprising polyvinyl chloride (PVC) film and back coating of water based PSA, wherein said PSA comprises a copolymer by copolymerization of a monomer mixture comprising, a) from 30 wt % to less than 70 wt % acrylic acid C4-C8-alkylester, and b) from 2 wt % to 9 wt % (meth)acrylonitrile, wherein the polyvinyl chloride film is not corona treated. The adhesive sheet is suitable for applications of indoor and outdoor graphic poster, especially for clean removable usages.

Abstract: A microdomained aqueous emulsion polymer is provided. The polymer comprises a first domain having a Tg of from ?80 to ?10° C. and comprising from 80 to 100 wt % of acrylic monomer; and a non-crosslinked second domain having a Tg of from 50 to 120° C. and comprising, as polymerized unit and based on the weight of the second domain, from 50 to 100 wt % of styrenic monomer; wherein the content of the second domain ranges from greater than 6 wt % to 30 wt % of the total weight of the first domain and the second domain. The polymer is suitable for applications including adhesives and binders, especially for pressure sensitive adhesives.