High flow polyphenylene ether formulations
View Patent ↗A high flow polyphenylene ether resin composition comprises a blend of at least two polyphenylene ether resins, a first resin having an intrinsic viscosity of at least 0.3 dl/g, and a second resin having an intrinsic viscosity of less than 0.17 dl/g and preferably having a particle size of at least about 100 μm. Fiber reinforced and flame retarded compositions exhibit high HDT values.
1. A composition comprising:
a first polyphenylene ether resin having an intrinsic viscosity of at least about 0.3 dl/g as measured in chloroform at 25° C. prior to melt blending; and
a second polyphenylene ether resin having an intrinsic viscosity less than or equal to 0.17 dl/g as measured in chloroform at 25° C. prior to melt blending wherein the second polyphenylene ether is isolated from a reaction solution as a solid mass or by agglomeration.
2. The composition of claim 1 , further comprising a vinyl aromatic resin.
3. The composition of claim 1 , further comprising a polyolefin.
4. The composition of claim 1 , further comprising an impact modifier.
5. The composition of claim 1 , further comprising a flame retardant.
6. The composition of claim 5 , wherein the flame retardant is free of halogen.
7. The composition of claim 5 , wherein the flame retardant is a phosphorous compound.
8. The composition of claim 7 , wherein the flame retardant is selected from the group consisting of triphenyl phosphate, the alkylated triphenyl phosphates, isopropylated triphenyl phosphate, butylated triphenyl phosphate, bis-neopentyl piperidinyl diphosphate, tetraphenyl bisphenol-A diphosphate, tetraphenyl resorcinol diphosphate, hydroquinone diphosphate, bisphenol-A diphosphate, bisphenol-A polyphosphate, mixtures of these compounds and derivatives of these compounds.
9. The composition of claim 1 , further comprising glass fiber in an amount up to 60% by weight of the total composition.
10. The composition of claim 1 , further comprising carbon fiber in an amount up to 60% by weight of the total composition.
11. The composition of claim 1 , further comprising a non-fiberous inorganic filler.
12. The composition of claim 1 , wherein the composition has an HDT value greater than about 121° C. as determined by ASTM D648.
13. The composition of claim 1 , wherein the composition exhibits a UL-94 VI rating or better.
14. A composition comprising:
a first polyphenylene ether resin having an intrinsic viscosity of at least about 0.3 dl/g as measured in chloroform at 25° C. prior to melt blending;
a second polyphenylene ether resin having an intrinsic viscosity less than or equal to 0.17 dl/g as measured in chloroform at 25° C. prior to melt blending wherein the second polyphenylene ether is isolated from a reaction solution as a solid mass or by agglomeration;
glass fiber;
flame retardant; and
non-fiberous inorganic filler.
15. The composition of claim 14 , wherein the glass fiber is present in an amount up to 60% by weight of the total composition.
16. The composition of claim 14 , wherein the flame retardant is free of halogen.
17. The composition of claim 14 , wherein the flame retardant is a phosphorous compound.
18. The composition of claim 17 , wherein the flame retardant is selected from the group consisting of triphenyl phosphate, the alkylated triphenyl phosphates, isopropylated triphenyl phosphate, butylated triphenyl phosphate, bis-neopentyl piperidinyl diphosphate, tetraphenyl bisphenol-A diphosphate, tetraphenyl resorcinol diphosphate, hydroquinone diphosphate, bisphenol-A diphosphate, bisphenol-A polyphosphate, mixtures of these compounds and derivatives of these compounds.
19. The composition of claim 14 , wherein the non-fiberous inorganic filler is selected from the group consisting of mica, clay, glass beads, glass flakes, graphite, aluminum hydrate, calcium carbonate, silica, kaolin, barium sulfate, talcum and calcium silicate.
20. A composition consisting essentially of:
a first polyphenylene ether resin having an intrinsic viscosity of at least about 0.3 dl/g as measured in chloroform at 25° C. prior to melt blending;
a second polyphenylene ether resin having an intrinsic viscosity less than or equal to 0.17 dl/g as measured in chloroform at 25° C. prior to melt blending wherein the second polyphenylene ether is isolated from a reaction solution as a solid mass or by agglomeration;
glass fiber;
flame retardant; and
non-fiberous inorganic filler.
21. The composition of claim 20 , wherein the flame retardant is free of halogen.
22. The composition of claim 20 , wherein the flame retardant is a phosphorous compound.
23. The composition of claim 20 , wherein the flame retardant is selected from the group consisting of triphenyl phosphate, the alkylated triphenyl phosphates, isopropylated triphenyl phosphate, butylated triphenyl phosphate, bis-neopentyl piperidinyl diphosphate, tetraphenyl bisphenol-A diphosphate, tetraphenyl resorcinol diphosphate, hydroquinone diphosphate, bisphenol-A diphosphate, bisphenol-A polyphosphate, mixtures of these compounds and derivatives of these compounds.
24. The composition of claim 20 , wherein the flame retardant is selected from the group consisting of tetraphenyl bisphenol-A diphosphate, tetraphenyl resorcinol diphosphate, bisphenol-A diphosphate, bisphenol-A polyphosphate, mixtures of these compounds and derivatives of these compounds.