High temperature melt processable semi-crystalline poly (aryl ether ketone) containing a (4-hydroxyphenyl) phthalazin-1 (2H)-one comonomer unit
Compositions and methods for a melt processable semicrystalline poly(aryl ether ketone) incorporating phthalazinone and 4,4′-biphenol as comonomer units are described herein. The polymers are resistant to and insoluble in common organic solvents and liquids as well as in aggressive organic solvents such as chloroform and chlorinated liquids. The polymers are melt processable via techniques such as extrusion, injection molding, and compression molding. The semicrystalline poly(aryl ether ketone) containing phthalazinone comonomer units have properties which make them suitable for manufacturing high temperature resistant molded systems and other articles.
1. A composition, consisting essentially of a melt processable semicrystalline aromatic polyetherketone polymer according to formula (I):
wherein Cp is a phthalazinone unit of formula (II);
Q is a biphenol unit of formula (III);
Z is an aromatic ketone unit of formula (VI);
x is a value of at least 1; and
y is a value of at least 1,
wherein x and y are such that the molar ratio of Q to Cp is between about 30/70 and 90/10,
wherein the polymer has a glass transition temperature between about 180° C. and 240° C., and
wherein the melt processable semicrystalline aromatic polyetherketone polymer has an enthalpy of melting endotherm of between about 5.0 J/g and 26.0 J/g.
2. The composition according to claim 1 , wherein x +y =n, wherein in the formula x +y =n, and n is a value such that the polymer composition has an inherent viscosity of at least about 0.5 dL/g.
3. The composition according to claim 1 , wherein the polymer comprises a melt temperature between about 310° C. and 376° C.
4. A shaped article formed by extrusion, injection molding, centrifuge molding, blow molding, rotational molding, transfer molding, thermoforming or compression molding, comprising the composition according to claim 1 .
5. A composite structure, comprising the composition according to claim 1 and a fibrous substrate.
6. A composite structure, comprising the composition according to claim 1 and a particulate filler.
7. A composite structure, comprising the composition according to claim 1 , a fibrous substrate, and a particulate filler.
8. The composition of claim 1 , further comprising mineral fillers.
9. The composition of claim 8 , wherein the mineral fillers are selected from the group consisting of mica, glass, quartz, and clay.
10. The composition of claim 1 , further comprising fibers.
11. The composition of claim 10 , wherein the fibers are selected from the group consisting of glass fibers, carbon fibers, polyarylamide fibers, and ceramic fibers.
12. The composition of claim 1 , further comprising additives selected from the group consisting of colorants, pigments, thermal stabilizers, and ultra violet stabilizers.