Stabilized modifier and impact modified thermoplastics

Details Stabilized modifier and impact modified thermoplastics Stabilized modifier and impact modified thermoplastics

1994-02-15

1995-09-19

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524305, 524291, 524330, 524417, 525 69, 525902, C08K 5526, C08K 536, C08K 513

Patent

active

054516242

ABSTRACT:
The invention relates to improved thermoplastic compositions composed of one or more thermoplastics (component A), and a stabilized MBS core shell graft copolymer (component B) formed from a rubber-elastic core based on polybutadiene, and a hard graft shell.
The stabilized MBS core shell graft copolymer (component B) contains a special stabilization formulation of at least one hindered phenol, a phosphite, an organic sulfide, and optionally a pH buffer system. The stabilized MBS core shell graft copolymer improves the impact strength and heat aging properties of thermoplastic compositions and polyacetal compositions.
The shaped articles produced from the improved thermoplastic compositions are particularly distinguished by an excellent high-temperature impact strength and a good heat aging performance.

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