Process for preparing styrene resins containing polyester plasti

Details Process for preparing styrene resins containing polyester plasti Process for preparing styrene resins containing polyester plasti

1975-04-10

1976-01-27

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 318DR, 260873, C08K 511

Patent

active

039351530

ABSTRACT:
Molding compositions having improved properties for low-pressure, low-shear molding techniques are prepared by carrying out a two-stage polymerization of an initial mixture comprising a polymerizable monomer selected from the group consisting of (1) a polymerizable aromatic monoalkenyl monomer or (2) a mixture of such aromatic monoalkenyl monomer with another polymerizable monovinyl monomer; in the presence of a butadiene rubber elastomer under bulk polymerization conditions, followed by suspension polymerization conditions; the process being characterized by the incorporation into the initial mixture of 1 to 10 wt. %, based on the polymerizable monomers, of a straight chain saturated polyester having an average molecular weight of 1,000 to 50,000.

REFERENCES:
patent: 3577480 (1971-05-01), Thorpe
patent: 3644587 (1972-02-01), Finberg
patent: 3725332 (1973-04-01), Carrock

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