Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1981-03-26
1982-06-22
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525285, C08F27902
Patent
active
043363547
ABSTRACT:
A molding composition having advantageous toughness and impact resistance is prepared by polymerizing a mixture of styrene and maleic anhydride in the presence of and adapted to incorporate from about 5 to about 25% of a high impact polystyrene containing from about 4 to about 16% rubber, said high impact polystyrene having an average molecular weight which is significantly higher than the average molecular weight of the completed molding composition. The composition is especially useful in molding fiber-reinforced articles. The composition has outstanding toughness when green. That is, hot and freshly molded articles can be removed from the mold with minimized breakage, thus decreasing the amount of scrap arising from the breakage of a green molded item at the time of being ejected and/or removed from a mold. Moreover, the composition is moldable throughout a wide range of conditions and is less sensitive to changes in molding conditions.
REFERENCES:
patent: 4097551 (1978-06-01), DiGiulio
patent: 4221880 (1980-09-01), Fava
patent: 4223096 (1980-09-01), Lee
Lordi Frank E.
Triplett Jacob
Atlantic Richfield Company
Michl Paul R.
LandOfFree
Method of preparing styrene-maleic anhydride molding composition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of preparing styrene-maleic anhydride molding composition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing styrene-maleic anhydride molding composition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-653695