Monovinylidene aromatic polymer resins having added amounts of h

Details Monovinylidene aromatic polymer resins having added amounts of h Monovinylidene aromatic polymer resins having added amounts of h

1985-03-08

1986-04-29

Ziegler, Jacob

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524515, 524519, 525 71, 525 76, 525 84, 525241, C08L 2506, C08L 5104, C08L 5502

Patent

active

045858250

ABSTRACT:
Monovinylidene aromatic polymer compositions which have good combinations of strength, heat resistance and melt flow properties, are produced by, in effect, adding minor amounts of high molecular weight monovinylidene aromatic polymers to major amounts of intermediate molecular weight polymers. These compositions can be advantageously produced by feeding previously polymerized high molecular weight polymer, dissolved in monomer, into a polymerization zone or reactor wherein the intermediate molecular weight polymer is produced in the presence of the high molecular weight polymer.

REFERENCES:
patent: 2454851 (1948-11-01), Warner
patent: 2864802 (1959-12-01), Price et al.
patent: 4137388 (1979-06-01), Cutter
patent: 4187260 (1980-02-01), Kruse et al.
Japanese Patent Announcement, Rokoi 55-164,207/1980.

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