Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-02-22
1995-05-02
Clark, W. Robinson H.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 95, 525 99, C08L 906, C08L 5302
Patent
active
054120322
ABSTRACT:
A linear styrene-isoprene-styrene block copolymer composition comprised of linear polymeric blocks wherein the block copolymer composition has a coupling efficiency of from 20 to 40%, a polystyrene content of from 18 to 24%, a polystyrene block molecular weight of from 25,000 to 35,000, and an overall molecular weight of above 280,000 to 520,000. The invention also contemplates adhesive formulations comprising these block copolymer compositions and a tackifying resin.
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Dillman Steven H.
Hansen David R.
Clark W. Robinson H.
Haas Donald F.
Shell Oil Company
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