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Carl L Willis, Steven S Chin: Modified block copolymers. Shell Oil Company, Keith M Tackett, November 21, 1989: US04882384 (60 worldwide citation)

A thermoplastic polymer having good tensile strength at elevated temperatures is obtained by modifying a block copolymer composed of a conjugated diene compound and an alkenyl arene compound. The block copolymer is first selectively hydrogenated and thereafter modified by grafting silicon or boron c ...


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Steven S Chin: Styrene-isoprene-styrene block copolymer composition for low viscosity low temperature hot melt adhesives. Shell Oil Company, Donald F Haas, June 2, 1992: US05118762 (24 worldwide citation)

A low viscosity low temperature hot melt adhesive which contains a predominantly branched styrene-isoprene-styrene block copolymer composition comprised of linear polymeric blocks wherein the polystyrene block molecular weight is greater than about 12,000, the polystyrene content is about 35% or les ...


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Glenn R Himes, Bridget A Spence, Ronald J Hoxmeier, Steven S Chin: Dissimilar arm asymmetric radial or star block copolymers for adhesives and sealants. Shell Oil Company, Donald F Haas, February 28, 1995: US05393841 (23 worldwide citation)

Radial or star asymmetric block copolymer of the following formulae and improved adhesive and sealant compositions containing them


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Steven S Chin, David J St Clair, Richard L Talbott: Styrene-isoprene three-armed high load bearing capacity block copolymer composition for adhesives. Shell Oil Company, Donald F Haas, March 16, 1993: US05194500 (21 worldwide citation)

An adhesive which contains a tackifying resin and a branched three-armed block copolymer composition comprised of polymeric blocks wherein the molecular weight is from about 180,000 to about 250,000, the polystyrene content is from about 17 to about 23% by weight of the block copolymer composition a ...


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Glenn R Himes, Bridget A Spence, Ronald J Hoxmeier, Steven S Chin: Dissimilar arm asymmetric radical or star block copolymers for adhesives and sealants. Shell Oil Company, Donald F Haas, January 23, 1996: US05486574 (17 worldwide citation)

Radial or star asymmetric block copolymer of the following formulae and an improved tape assembly using the copolymers and improved adhesive and sealant compositions containing them


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Ronald J Hoximeier, Bridget A Spence, Steven S Chin: Method for preparing asymmetric radial copolymers having four first arms and two second arms. Shell Oil Company, Keith M Tackett, November 29, 1994: US05369175 (14 worldwide citation)

A method for preparing asymmetric radial polymers wherein the different polymeric arms are contacted sequentially with a coupling agent. The method narrows the relative arm distribution of the several asymmetric radial polymers produced and significantly increases the amount of total product having ...


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Glenn R Himes, Bridget A Spence, Ronald J Hoxmeier, Steven S Chin: Dissimilar arm asymmetric radial or star block copolymers for adhesives and sealants. Shell Oil Company, March 11, 1997: US05610238 (9 worldwide citation)

Radial or star asymmetric block copolymer of the following formulae and improved adhesive and sealant compositions containing them


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Michael A Masse, Steven S Chin, Craig A Stevens: Method for producing coupled asymmetric polymers. Shell Oil Company, Donald F Haas, November 1, 1994: US05360875 (7 worldwide citation)

A process for preparing a coupled asymmetric block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene which comprises:



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