Compatibilizing polymeric additives

C - Chemistry – Metallurgy – 08 – L

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400/4010, 18/789

C08L 57/00 (2006.01) B29C 47/00 (2006.01) C08L 33/24 (2006.01) C08L 39/04 (2006.01) C08L 67/02 (2006.01) C08L 69/00 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2033579

ABSTRACT Polymers containing glutarimide units are useful in compatibilizing blends of two or more polymers to improve physical properties, especially modulus and heat distortion values. The polyglutarimides are especially useful when the polymers to be blended are incompatible with each other, but separately compatible with the polyglutarimide. Compatibilization with the polyglutarimide may be enhanced in some cases by a grafting reaction between the polyglutarimide, if it also contains acid or anhydride function- ality, and one or more of the polymers to be blended.

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