Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1990-08-07
1993-08-31
Jagannathan, Vasu S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 53, 525 71, 525310, 525314, 525316, 422197, C08F25506, C08F27902, C08F28700, B01J 800
Patent
active
052409937
ABSTRACT:
Disclosed is a process for the production of a rubber-reinforced polymer composition having a bimodal particle size distribution using parallel, substantially plug flow reactors to separately polymerize the same or different solutions of a rubber in a monovinylidene aromatic monomer and optionally at least one other monomer. After separate partial polymerizations, first and second prepolymer compositions are produced containing rubber particles having average particle sizes of from 0.05 to 1.5 micrometer and from 0.7 to 10 micrometer, respectively, with the average rubber particle size of the second prepolymer composition being at least 1.3 times the average rubber particle size of the first prepolymer composition.
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Aerts Ludo M.
Alle Narasaiah
van Nuffel Claude T. E.
Jagannathan Vasu S.
The Dow Chemical Company
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