Abstract: An improved optical light pipe for side-lit uses is formed from a core/cladding combination, optionally with a transparent jacket, where the core is preferably a cured acrylic polymer and the cladding is preferably a fluorocarbon polymer containing a very low level of fine particles which scatter the light uniformly along the length of the piping. Further light enhancement can be obtained with low levels of glass fibers or glass microspheres also present in the cladding. Chopped glass fibers alone at low levels in the cladding are useful for back-lit applications. The light pipe so formed is useful in signs, underwater outlines, corridor lighting in theaters, and similar uses.

Abstract: A polymer blend of a polyglutarimide and liquid crystalline copolyester polymer or benzimidazole polymer. The blend is a melt-compoundable polymer blend.

Abstract: Glass-reinforced polyglutarimides exhibit improved impact resistance when low levels of phenoxy resin are incorporated into the blend.

Abstract: Polymers containing glutarimide units and also acid and/or anhydride units are compatible with polyesters, such as poly(ethylene terephthalate) to form blends. Chemical interaction (grafting) between the polyester and the acid/anhydride groups of the polyglutarimide occurs on processing the blends. The extent of grafting and the properties of the resultant blend can be enhanced by appropriate catalyst.

Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.

Abstract: Higher yields of graft copolymer occur when a catalytic amount of base is present during the grafting reaction. The resulting blends of ungrafted polymer with higher graft-copolymer content exhibit improved toughness and clarity.

Abstract: Polymers containing glutarimide units and also acid and/or anhydride units are compatible with polyesters, such as poly(ethylene terephthalate) to form blends. Chemical interaction (grafting) between the polyester and the acid/anhydride groups of the polyglutarimide occurs on processing the blends. The extent of grafting and the properties of the resultant blend can be enhanced by appropriate catalysts.

Abstract: The invention is directed to clear polymer blends of acrylic/vinyl aromatic copolymers with certain core-shell polymer impact modifiers. The core-shell modifiers have lightly crosslinked, predominantly diolefinic rubbery cores and one or more hard shells.

Abstract: Higher yields of graft copolymer occur when a catalytic amount of base is present during the grafting reaction of a polyamide and a polyglutarimide. The resulting blends of ungrafted polyamide and polyglutarimide with higher graft-copolymer content, the graft copolymer being a polyamide-grafted poly(glutarimide)ionomer, exhibit improved toughness and clarity.

Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.

Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties of imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.

Abstract: Thermoplastic copolymers of glytaric anhydride and (meth)acrylic esters may be prepared free of acid groups by reacting a (meth)acrylic ester polymer with a secondary amine at elevated temperature, and subsequently removing volatile components from the polymer at elevated temperature and reduced pressure.

Abstract: Glutarimide polymers having an acid and anhydride content lower than the acid and/or anhydride content normally present in the glutarimide polymers. Blends of the reduced acid and anhydride glutarimide polymers with thermoplastic materials are disclosed. A process for altering the properties oif imide polymers by reducing or substantially removing acid and anhydride levels normally present in the imide polymer is also disclosed.