Modification of engineering plastics using olefin-maleic anhydride copolymers
The present disclosure relates to novel compositions formed by compounding olefin-maleic anhydride copolymers (OMAP) such as ethylene-maleic anhydride copolymers with polyester (PE), polycarbonate (PC), polyacetal, thermoplastic urethane (TPU) and other engineering plastics.
1. A thermoplastic pelletizable compatibilized polymer alloy composition comprising:
(a) thermoplastic polyurethane (TPU) and polybutylene terephthalate (PBT) or polyamide and polybutylene terephthalate (PBT); and
(b) an olefin-maleic anhydride copolymer,
wherein the olefin-maleic anhydride copolymer enables compatibilization of the non-compatible engineering plastics,
wherein the olefin-maleic anhydride copolymer is a 1:1 alternating copolymer of maleic anhydride and an olefin, and
wherein the concentration of the olefin-maleic anhydride is about 0.5 to about 2% of the composition.
2. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 1 , wherein (a) is thermoplastic polyurethane (TPU) and polybutylene terephthalate (PBT).
3. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 1 , wherein (a) is polyamide and polybutylene terephthalate (PBT).
4. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 1 , wherein the olefin-maleic anhydride copolymer is an ethylene-maleic anhydride copolymer.
5. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 1 , wherein the olefin is selected from the group consisting of ethylene, propylene, isobutylene, 1-butene, octene, butadiene, styrene, isoprene, hexene, dodecene, 1-dodecene and tetradecene.
6. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 1 , wherein the olefin-maleic anhydride copolymer has a weight average molecular weight of (MW w ) of about 40,000 to about 600,000.
7. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 6 , wherein the olefin is ethylene.
8. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 1 , wherein the concentration of the olefin-maleic anhydride is about 0.5 to about 1.5% of the composition.
9. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 8 , wherein the olefin is ethylene.
10. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 2 , wherein the olefin is ethylene.
11. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 10 , wherein the olefin-maleic anhydride copolymer has a weight average molecular weight of (MW w ) of about 40,000 to about 600,000.
12. The thermoplastic pelletizable compatibilized polymer alloy composition of claim 11 , wherein the concentration of the olefin-maleic anhydride is about 0.5 to about 1.5% of the composition.