| KRATON POLYMERS U.S. LLC Patent applications |
| Patent application number | Title | Published |
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| 20120101231 | Polymer Composition prepared from acrylic polymer grafted with a functionalized block copolymers - The present invention relates to various end use applications prepared from certain block copolymers. The block copolymers include one or more A or A′ blocks or B blocks plus one or more terminal M blocks. Each A and A′ is a block or segment comprising predominantly a polymerized alkenyl aromatic compound, each B is a block or segment comprising predominantly a polymerized conjugated alkadiene, and each M is a six membered anhydride ring and/or acid group. The anhydride rings are prepared by thermally decomposing adjacent units of (1-methyl-1-alkyl)alkyl acrylic esters such as t-butylmethylacrylate. A wide variety of polymers are disclosed having the stable anhydride rings in the polymer backbone. The invention relates specifically to various end uses prepared from the reaction product of such block copolymers with various reactive resins, reactive monomers and metal derivatives. | 04-26-2012 |
| 20120070665 | Thermofusible Composition For Slush Moulding - A thermofusible composition comprising from about 40 to about 70 weight percent of a selectively hydrogenated styrenic block copolymer (HSBC), and from about 1 to about 30 weight percent of a butylene homopolymer, a butylenes copolymer, or a combination thereof, wherein the HSBC is: | 03-22-2012 |
| 20110263782 | High Melt Flow Block Copolymers for Non-Woven Adhesives - 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. | 10-27-2011 |
| 20110263763 | METHOD FOR VARYING THE TRANSPORT PROPERTIES OF A FILM CAST FROM A SULFONATED COPOLYMER - A method for varying the transport properties of a film cast from a polymer having at least two polymer end blocks A and at least one polymer interior block B wherein each A block is a polymer block resistant to sulfonation and each B block is a polymer block susceptible to sulfonation, and wherein said A and B blocks do not contain any significant levels of olefinic unsaturation. The method includes casting the polymer using a solvent mixture having two or more solvents selected from the group consisting of polar solvents and non-polar solvents. | 10-27-2011 |
| 20110184082 | Compositions Containing Styrene-Isobutylene-Styrene And Styrene-Ethylene/Butylene-Styrene Block Copolymers - The present invention provides for a composition that includes a hydrogenated styrenic block copolymer that has at least one block A and at least one block B, and about 10 to about 90 percent by weight of an styrene-isobutylene-styrene block copolymer. Each A is an monoalkenyl arene and each B block is a controlled distribution copolymer of at least one mono alkenyl arene and at least one conjugated diene, having the general formula A-EB/A-A and (A-EB/A)nX. Each B block comprises terminal regions adjacent to the A blocks that are rich in conjugated diene units and one or more regions not adjacent to the A blocks that are rich in mono alkenyl arene units. Oil-free compositions that result in the combination of low gaseous permeability, low thermal conductivity, strong vibration and sound attenuation, and optionally high levels of light transmission with relatively low haze values while maintaining melt flow rates suitable for easy processability are preferred. | 07-28-2011 |
| 20110112236 | THERMOPLASTIC POLYURETHANE BLOCK COPOLYMER COMPOSITIONS - A novel block copolymer composition including a hydrogenated block copolymer that has at least one block A and at least one block B, and wherein (a) prior to hydrogenation each A block is a mono alkenyl arene homopolymer block and each B block is a controlled distribution copolymer block of at least one conjugated diene and at least one mono alkenyl arene, (b) subsequent to hydrogenation about 0-10% of the arene double bonds have been reduced, and at least about 90% of the conjugated diene double bonds have been reduced, (c) each A block having a number average molecular weight between about 3,000 and about 60,000 and each B block having a number average molecular weight between about 30,000 and about 300,000, (d) each B block comprises terminal regions adjacent to the A blocks that are rich in conjugated diene units and one or more regions not adjacent to the A blocks that are rich in mono alkenyl arene units, (e) the total amount of mono alkenyl arene in the hydrogenated block copolymer is about 5 percent weight to about 50 percent weight, and (f) the weight percent of mono alkenyl arene in each B block is between about 10 percent and about 75 percent. The thermoplastic polyurethane elastomer is present in the block copolymer in an amount from about 50 to about 95 percent by weight of a thermoplastic polyurethane elastomer. | 05-12-2011 |
| 20110112217 | PROCESS FOR THE PREPARATION OF AN ARTIFICIAL LATEX - Accordingly, the invention provides a process for the preparation of an artificial latex, comprising the steps: (a) emulsification of a cement comprising a rubber dissolved in a suitable organic solvent, together with an aqueous surfactant solution, thus forming an oil-in-water emulsion; (b) step-wise reduction of the solvent content of the oil-in-water emulsion in two or more stages resulting in an artificial latex. In addition, the invention provides a continuous stirred vessel for removing an organic solvent from an oil-in-water emulsion comprising rubber dissolved in an organic solvent. | 05-12-2011 |
| 20100298514 | SULFONATED BLOCK COPOLYMERS HAVING ETHYLENE AND DIENE INTERIOR BLOCKS, AND VARIOUS USES FOR SUCH BLOCK COPOLYMERS - A sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A and at least one interior block B wherein each A block is a polymer block resistant to sulfonation and each B block is a polymer block susceptible to sulfonation, wherein the A and B blocks do not contain any significant levels of olefinic unsaturation. Each A block includes one or more segments selected from polymerized (i) ethylene, (ii) monomers of conjugated dienes having a vinyl content less than 35 mol percent prior to hydrogenation, and (iii) mixtures thereof; and each B block comprising segments of one or more polymerized vinyl aromatic monomers selected from (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof. | 11-25-2010 |
| 20100204403 | SULFONATED BLOCK COPOLYMERS, METHOD FOR MAKING SAME, AND VARIOUS USES FOR SUCH BLOCK COPOLYMERS - A pre-cursor block copolymer for sulfonation which, prior to hydrogenation, has the general configuration A-B-A, A-B-A-B-A, (A-B-A)nX, (A-B)nX, A-D-B-D-A, A-B-D-B-A, (A-D-B)nX, (A-B-D)nX or mixtures thereof, wherein A, B and D blocks do not contain any significant levels of olefinic unsaturation. Each A and D block is a polymer block resistant to sulfonation, and each B block is a polymer block susceptible to sulfonation. Each A block is a segment of one or more polymerized para-substituted styrene monomers, each B block contains segments of one or more vinyl aromatic monomers selected from polymerized (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof, and each D block contains polymers having a glass transition temperature less than 20° C. and a number average molecular weight of between 1,000 and 50,000 | 08-12-2010 |
| 20100203785 | COMPOSITION CONTAINING SULFONATED BLOCK COPOLYMERS AND ARTICLES MADE THEREFROM - A composition having a sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A, at least one polymer interior block B, and at least one polymer block D. Each A block is a segment of one or more polymerized para-substituted styrene monomers, each B block contains segments of one or more vinyl aromatic monomers selected from polymerized (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof, and each D block having a glass transition temperature of less than 20° C. and a number average molecular weight of between 1,000 and 50,000 Adhesives, coatings and membranes are formed from the composition. Various articles are formed with the composition including films, fibers, fabrics, laminates, and absorbent cores. | 08-12-2010 |
| 20100203784 | PROCESS FOR PREPARING SULFONATED BLOCK COPOLYMERS AND VARIOUS USES FOR SUCH BLOCK COPOLYMERS - A process for preparing sulfonated block copolymers that are solid in water having at least two polymer end blocks A and at least one polymer interior block B involving sulfonating the interior block B until substantially sulfonated. Each A block having one or more segments selected from polymerized (i) para-substituted styrene monomers, (ii) ethylene, (iii) alpha olefins of 3 to 18 carbon atoms; (iv) hydrogenated 1,3-cyclodiene monomers, (v) hydrogenated monomers of conjugated dienes having a vinyl content less than 35 mol percent prior to hydrogenation, (vi) acrylic esters, (vii) methacrylic esters, and (viii) mixtures thereof. Each B block having segments of one or more polymerized vinyl aromatic monomers selected from (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof. | 08-12-2010 |
| 20100203783 | SULFONATED BLOCK COPOLYMERS METHOD FOR MAKING SAME, AND VARIOUS USES FOR SUCH BLOCK COPOLYMERS - A sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A and at least one polymer interior block B wherein each A block is a polymer containing essentially no sulfonic acid or sulfonate functional groups and each B block is a polymer block containing 10 to 100 mol percent sulfonic acid or sulfonate functional groups based on the number of monomer units of the B block, and wherein said A and B blocks do not contain any significant levels of olefinic unsaturation. Also claimed are processes for making such block copolymers, and the various end uses and applications for such block copolymers. | 08-12-2010 |
| 20100203782 | SULFONATED BLOCK COPOLYMERS HAVING ACRYLIC ESTERAND METHACRYLIC ESTER INTERIOR BLOCKS, AND VARIOUS USES FOR SUCH BLOCKS, AND VARIOUS USES FOR SUCH BLOCK COPOLYMERS - A sulfonated block copolymer which is solid and non-dispersible in water having at least two polymer end blocks A and at least one interior block B wherein each A block is a polymer block resistant to sulfonation and each B block is a polymer block susceptible to sulfonation, wherein the A and B blocks do not contain any significant levels of olefinic unsaturation. Each A block having one or more segments selected from (i) acrylic esters, (ii) methacrylic esters, and (viii) mixtures thereof; and each B block comprising segments of one or more polymerized vinyl aromatic monomers selected from (i) unsubstituted styrene monomers, (ii) ortho-substituted styrene monomers, (iii) meta-substituted styrene monomers, (iv) alpha-methylstyrene, (v) 1,1-diphenylethylene, (vi) 1,2-diphenylethylene and (vii) mixtures thereof. | 08-12-2010 |
| 20100190912 | THERMOPLASTIC ELASTOMER COMPOSITION - The present invention relates to a thermoplastic elastomer composition having a durometer hardness (ASTM D2240) of Shore A 30 to 90 comprising:
| 07-29-2010 |
| 20100130670 | END USE APPLICATIONS PREPARED FROM CERTAIN BLOCK COPOLYMERS - Articles and methods for forming articles containing hybrid block copolymers having conjugated diene and/or alkenyl aromatic and at least one block of (1-methyl-1-alkyl)alkyl ester groups and/or anhydride groups which are derived from the ester groups and/or acid groups. | 05-27-2010 |
| 20100010154 | GELS PREPARED FROM DPE CONTAINING BLOCK COPOLYMERS - The present invention relates to gels prepared from novel anionic block copolymers of mono alkenyl arenes, diphenylethylenes and conjugated dienes, and to blends of such block copolymers with oils. The block copolymers are selectively hydrogenated and have mono alkenyl arene/diphenylethylene end blocks and conjugated diene mid blocks. The block copolymer may be combined with oils and other components to form the gels of the present invention. | 01-14-2010 |
| 20090299010 | PROCESS FOR PREPARING A BITUMINOUS BINDER COMPOSITION - The present invention is directed to a process for preparing a polymer modified bituminous binder composition in the substantial absence of crosslinking agents by heating a bitumen component in a stirred tank to a temperature from 185° C. to 221° C.; adding a block copolymer composition to the bitumen component while the bitumen component is being stirred to form a homogeneous mixture of the bitumen component and the block copolymer composition; and continuing to stir the homogeneous mixture while maintaining the temperature from 185° C. to 221° C. for a period of time from 4 hours to 30 hours thereby forming a cured polymer modified bituminous binder composition. The block copolymer composition utilized in the process comprises a diblock copolymer comprising one block of a monovinylaromatic hydrocarbon and one block of a conjugated diene having a peak molecular weight from 30,000 to 78,000 and a vinyl content from 35 to 80 mol percent based on the number of repeat monomer units in the conjugated diene block, and optionally one or more block copolymers comprising at least two blocks of monovinylaromatic hydrocarbon and at least one block of conjugated diene, the block copolymer selected from linear triblock copolymers having a peak molecular weight that is 1.5 to 3.0 times the peak molecular weight of the diblock copolymer, multiarm coupled block copolymers having a peak molecular weight that is 1.5 to 9.0 times the peak molecular weight of the diblock copolymer, and mixtures thereof, wherein each block copolymer has a vinyl content from 35 to 80 mol percent based on the number of repeat monomer units in the conjugated diene block, wherein when both (i) and (ii) are present in the block copolymer composition, the ratio of (i) to (ii) is greater than 1:1. The present invention is further related to an alternative to this process, a specific class of bituminous binder compositions and concentrates and a specific class of block copolymer compositions. | 12-03-2009 |
| 20090281211 | PROCESS FOR THE PREPARATION OF AN ARTIFICIAL LATEX - A process of producing an artificial latex, comprising the steps:
| 11-12-2009 |
| 20090264590 | HIGH MOLECULAR WEIGHT COUPLED BLOCK COPOLYMER COMPOSITIONS - High molecular weight coupled block copolymer composition comprising
| 10-22-2009 |
| 20090247689 | ELASTIC FILM GRADE THERMOPLASTIC POLYMER COMPOSITIONS HAVING IMPROVED ELASTIC PERFORMANCE - 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. The composition is comprised of (a) 100 parts by weight of a mixture of two or more hydrogenated styrenic block copolymers (HSBC's) having at least two polystyrene end-blocks and a mid-block of a polymerized diene wherein at least 80 mol % of the residual unsaturation has been hydrogenated, wherein HSBC #1 has an apparent number average molecular weight between 35,000 and 90,000 and a polystyrene content between 15 and 40 percent by weight, wherein HSBC #2 has an apparent number average molecular weight between 95,000 and 150,000 and a polystyrene content between 15 and 40 percent by weight, wherein the ration w/w of HSBC #1 versus HSBC #2 is in the range of from 8:1 to 1:8, (b) from 10 to 50 parts by weight per 100 parts by weight of polymer (phr) of a a medium molecular weight polystyrene (2) or a mixture of a low molecular weight polystyrene (1) and a medium molecular weight polystyrene (2), wherein PS (1) has a molecular weight in the range of 500 to 4,000 and PS(2) has a molecular weight in the range of 20,000 to 150,000 and wherein PS(1) and PS(2) are used in a weight ratio of 1:5 to 5:1, (c) from 3 to 50 phr of a filler, and (d) from 30 to 70 phr of a softening agent. | 10-01-2009 |
| 20090234059 | MIKTOPOLYMER COMPOSITIONS - The present invention provides a block copolymer composition and method of making the same having the structures (A | 09-17-2009 |
| 20090209698 | PROCESS FOR THE PREPARATION OF AN ARTIFICIAL LATEX - A process for the preparation of an aqueous rubber emulsion (artificial latex), comprising the steps:
| 08-20-2009 |
| 20090186958 | GEL COMPOSITIONS - Disclosed are four gel compositions that have improved properties over the prior art. These gels include elastosols, solid rubbery gels, UV cured gels and chemically cured gels. The gels are formed from selectively hydrogenated styrene/diene block copolymers, unhydrogenated styrene/diene block copolymers, and selectively hydrogenated styrene/diene block copolymers that have been maleated. | 07-23-2009 |
| 20090163361 | SOFT ELASTOMERIC FILMS - Elastomeric films which are both soft and thermally, UV and oxidatively stable are provided. The films are composed of coupled, selectively hydrogenated block copolymers having a relatively high molecular weight and high vinyl content. In addition to the block copolymer other components may be present in formulated films such as other block copolymers, hydrocarbon resins, polyolefins, metallocene polyolefins, homopolystyrene or mineral oils. The softness of the films is determined by the stress at 100% tensile elongation where the films with suitable softness have a 100% stress of about 100 psi or less. While soft, the films also are strong with tensile strengths of 1000 psi or more and suitable hysteresis properties. The elastomeric films are useful as integral components of personal hygiene articles such as gloves, diapers, incontinence products, disposable swimwear and disposable undergarments. | 06-25-2009 |
| 20090093584 | End Use Applications Prepared From Certain Block Copolymers - The present invention relates to various end use applications prepared from certain block copolymers. The block copolymers include one or more A or A′ blocks or B blocks plus one or more terminal M blocks. Each A and A′ is a block or segment comprising predominantly a polymerized alkenyl aromatic compound, each B is a block or segment comprising predominantly a polymerized conjugated alkadiene, and each M is a six membered anhydride ring and/or acid group. The anhydride rings are prepared by thermally decomposing adjacent units of (1-methyl-1-alkyl)alkyl acrylic esters such as t-butylmethylacrylate. A wide variety of polymers are disclosed having the stable anhydride rings in the polymer backbone. The invention relates specifically to various end uses prepared from the reaction product of such block copolymers with various reactive resins, reactive monomers and metal derivatives. | 04-09-2009 |
| 20090062457 | STYRENIC BLOCK COPOLYMERS AND COMPOSITIONS CONTAINING THE SAME - A block copolymer of the formula [S-I-(I/B)] | 03-05-2009 |
| 20090062420 | Block Copolymers Having Distinct Isoprene and butadiene Midblocks, Method for Making Same, and Uses For Such Block Copolymers - A block terpolymer for use in photocurable compositions, flexographic printing plates or hot melt adhesives having a molecular structure according to the general formula: | 03-05-2009 |
| 20080275183 | BITUMINOUS BINDER COMPOSITION AND PROCESS FOR PREPARING THE SAME - The present invention is directed to a process for preparing a polymer modified bituminous binder composition in the substantial absence of crosslinking agents by heating a bitumen component in a stirred tank to a temperature from 160° C. to 221° C.; adding a block copolymer composition to the bitumen component while the bitumen component is being stirred to form a homogeneous mixture of the bitumen component and the block copolymer composition; and continuing to stir the homogeneous mixture while maintaining the temperature from 180° C. to 221° C. for a total period of time from 4 hours to 30 hours thereby forming a cured polymer modified bituminous binder composition. The block copolymer composition utilized in the process comprises one or more block copolymers having at least one monovinylaromatic block and either (I) at least one polybutadiene block having a vinyl content of less than 15 mol percent and at least one polybutadiene block having a vinyl content of greater than 25 mol percent or (II) at least one polybutadiene block having a vinyl content that tapers from a vinyl content of less than 15 mol percent at the first end adjacent to the monovinylaromatic block to a vinyl content that is greater than 25 mol percent at the second end which is furthest from the monovinylaromatic block and optionally at least one polybutadiene block having a vinyl content of less than 15 mol percent. | 11-06-2008 |
