Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-05-30
1996-12-03
Jordan, Charles T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 98, 525314, C08L 5300
Patent
active
H00016225
ABSTRACT:
Adhesive and sealant compositions having improved resistance to a degradation which comprises: (a) a hydrogenated triblock, multiblock, radial, or star block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene, (b) from 3 to 50 percent by weight of the total composition of a hydrogenated diblock copolymer of a vinyl aromatic hydrocarbon and a conjugated diene wherein the overall molecular weight of the diblock ranges from 8000 to 100,000, the molecular weight of the poly vinyl aromatic hydrocarbon block ranges from 4000 to 32,000, the molecular weight of the poly conjugated diene block ranges from 3000 to 90,000, and the vinyl aromatic hydrocarbon content ranges from 30 to 70 percent by weight of the diblock copolymer, and (c) 20 to 400 parts by weight per 100 parts by weight of total block copolymers of a tackifying resin.
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Hardee John R.
Jordan Charles T.
Shell Oil Company
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