US 8,026,309 B2 · Process for producing compatibilized polymer blends

Abstract

A process is provided for producing a compatibilized polymeric blend. A first thermoplastic polymer and a reactive moiety are provided to a progressive melt kneading apparatus. The reactive moiety comprises a first reactive group capable of reacting with the first thermoplastic polymer but not a second polymer and a second reactive group capable of reacting with the second polymer but not the first polymer. The first thermoplastic polymer and the reactive moiety are then melt kneaded so that the first reactive group reacts with the first thermoplastic polymer and the second reactive group is grafted to the first thermoplastic polymer, forming a molten self-compatibilizer. A molten second polymer is then provided. The molten self-compatibilizer is melt kneaded with the molten second polymer so that the second reactive group reacts with the second polymer to form a compatibilized polymeric blend. Also provided are articles formed from the compatibilized polymer blend.

Claims28

Dependent claims

A process for providing a compatibilized polymeric blend composition, comprising:

providing at least one polyethylene polymer, a reactive moiety, an optional initiator, and an optional catalyst to an upstream portion of a first progressive melt kneading apparatus, the reactive moiety comprising a first reactive group capable of reacting with the polyethylene polymer and a second reactive group capable of reacting with a polyamide polymer to be subsequently provided;
melt kneading the polyethylene polymer and the reactive moiety so that the first reactive group reacts with the polyethylene polymer and grafts the second reactive group to at least one portion of the polyethylene polymer, thereby forming a molten self-compatibilizer;
providing at least one molten polyamide polymer to the first progressive melt kneading apparatus;
and
melt kneading the molten self-compatibilizer with the polyamide polymer at a downstream portion of the first progressive melt kneading apparatus so that the second reactive group reacts with at least one portion of the molten polyamide polymer to form the compatibilized polymeric blend composition;
and
wherein the compatibilized polymeric blend composition comprises from 5 to 40 wt % of the polyamide polymer.

4 more elements

A process for making a product from a compatibilized polymeric composition, comprising:

providing at least one polyethylene polymer, a reactive moiety, an optional initiator, and an optional catalyst to an upstream portion of a first progressive melt kneading apparatus, the reactive moiety comprising a first reactive group capable of reacting with the polyethylene polymer and a second reactive group capable of reacting with a polyamide polymer to be subsequently provided;
melt kneading the polyethylene polymer and the reactive moiety so that the first reactive group reacts with the polyethylene polymer and grafts the second reactive group to the polyethylene polymer, thereby forming a molten self-compatibilizer;
providing at least one molten polyamide polymer to the first progressive melt kneading apparatus;
melt kneading the molten self-compatibilizer with the molten polyamide polymer at a downstream portion of the first progressive melt kneading apparatus so that the second reactive group reacts with the molten polyamide polymer to form the compatibilized polymeric composition;
and
producing a product from the compatibilized polymeric composition;
wherein the compatibilized polymeric blend composition comprises from 5 to 40 wt % of the at least one molten polyamide polymer.

4 more elements

Dependencies are inferred from the claim text.

Process for producing compatibilized polymer blends

Life of this patent

Process for producing compatibilized polymer blends

Life of this patent

Abstract

Claims28