Polyetherimide compositions

Abstract

A polyetherimide composition includes 60-100 wt% of a polyetherimide component, and 0-40 wt% of a polyester-carbonate; 1-10 wt% of a cyclic phenylphenoxy phosphazene of the formula (I) wherein n is an integer of 3-8; R1 and R2 are each independently nitro or C1 -8 alkyl, C1-8 alkoxy, C6-20 aryl, or C6-20 aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a C1-6 alkyl or a C6-20 aryl, or R1 and R2 together form a saturated or unsaturated cyclic structure that may be unsubstituted, or substituted with a C1-6 alkyl group or a carbonyl group, a and b are each independently an integer of 0-4, and each phosphazene unit is the same or different; wherein a molded sample of the polyetherimide composition has a UL 94 V0 rating at a thickness of greater than or equal to 0.6 mm

Description

24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIALPOLYETHERIMIDE COMPOSITIONSCROSS REFERENCE TO RELATED APPLICATIONSThis application claims the benefit of European patent application number 24199505.9, filed September 10, 2025, the contents of which are hereby incorporated by reference in their entirety.BACKGROUND

[0001] This disclosure is directed to flame retardant, transparent polyetherimide compositions, their methods of manufacture, articles including the polyetherimide compositions, and their methods of manufacture.

[0002] Polyetherimides are amorphous, transparent high performance polymers having a glass transition temperature (Tg) of greater than 180 °C. These polymers further have high strength, heat resistance, and modulus, as well as broad chemical resistance. Polyetherimides are widely used in applications as diverse as automotive, telecommunication, aerospace, electrical / electronics, transportation, and healthcare. Due to their broad use, particularly in the electrical and consumer electronics applications, there is a continuing need for polyetherimide compositions that meet a flammability rating of V-0 in the 0.6-0.8 millimeter Vertical Burning Flame Test of Underwriter's Laboratory Bulletin 94 "Tests for Flammability of Plastic Materials, UL 94," which are often required for these applications.

[0003] Polyetherimides are inherently flame retardant. However, certain additives that are used to adjust other properties of polyetherimides can affect and result in inconsistent results in UL 94 flame testing. Accordingly, polyetherimide compositions having robust UL 94 V0- rating at 0.6-0.8 mm sample thickness are continuously sought.SUMMARY

[0004] A poly etherimide composition includes 60-100 wt% of a poly etherimide component, and 0-40 wt% of a polyester-carbonate; 1-10 wt%, based on the total weight of the polymer component, of a cyclic phenylphenoxy phosphazene of the formula24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIALwherein n is an integer of 3-8, or 3-5, or 3-4; R1and R2are each independently nitro or Ci-8 alkyl, Ci-8 alkoxy, Ce-20 aryl, or Ce-20 aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a Ci-6 alkyl or a Ce-20 aryl, or R1and R2together form a saturated or unsaturated cyclic structure that may be unsubstituted, or substituted with a Ci-6 alkyl group or a carbonyl group, a and b are each independently an integer of 0-4, and each phosphazene unit is the same or different; wherein a molded sample of the polyetherimide composition has a UL 94 VO rating at a thickness of greater than or equal to 0.6 mm, preferably 0.6 to 1.0 mm.

[0005] Also disclosed is a method of making the polyetherimide composition.

[0006] Still further disclosed are articles including the polyetherimide composition and methods of making the articles.

[0007] The above described and other features are exemplified by the following Detailed Description and Examples.DETAILED DESCRIPTION

[0008] The inventors hereof have discovered that the flame retardancy of very thin articles made from polyetherimides, or polyetherimide / polyester-carbonate compositions can be improved using a specific flame retardant, in particular a cyclic phenylphenoxy phosphazene as described below. Surprisingly, unlike other flame retardants that can adversely affect transparency, the phenylphenoxy phosphazene do not substantially transparency. Other good properties can be retained such as strength, heat resistance, modulus, and broad chemical resistance. The polyetherimide compositions have robust UL-94 V0 performance at thicknesses from 0.6-0.8 millimeters (mm). The polyetherimide compositions are especially useful in the manufacture of electrical device components.24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL

[0009] The phenylphenoxy phosphazenes are cyclic organic compounds having more than one — P=N — bond in the molecule. The cyclic phenylphenoxy phosphazene can be of formula (1)which are referred to herein for convenience as phenylphenoxy phosphazenes based on the phenyl and phenoxy groups in each phosphazene unit.

[0010] In formula (1), n is an integer greater than or equal to 3. For example, n can be 3 to 25, or 3 to 15, or 3 to 10, or 3 to 8, or 3-5. In an aspect, n is an integer of 3-8, or 3-5, or 3-4.

[0011] Further in formula (1), R1and R2are the same or different and are each independently nitro or Ci-8 alkyl, Ci-8 alkoxy, Ce-20 aryl, or Ce-20 aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a Ci-6 alkyl or a Ce-20 aryl. Alternatively, R1and R2together form a saturated or unsaturated cyclic structure that can be unsubstituted, or substituted with a Ci-6 alkyl group or a carbonyl group. In an aspect, R1and R2are the same or different and are each independently nitro or C M alkyl, Ci-4 alkoxy, Ce-12 aryl, or Ce-12 aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a C1-3 alkyl or a Ce-io aryl, or R1and R2together form a saturated or unsaturated cyclic structure that can be unsubstituted, or substituted with a C1-3 alkyl group or a carbonyl group.

[0012] Still further in formula (1), a and b are each independently an integer of 0 to 4, or 0-3, or 0-2. In an aspect, a and b are each the same, and are 0-2 or 0-1. In an aspect a and b are each zero.

[0013] Each of the phosphazene units in Formla (1) can be the same or different. For example, in each unit, each R1and R2can be the same or different as another unit. As a further example, in at least one unit, R1and R2can be separate substituents and in at least one other unit R1and R2can be joined as described above.

[0014] In an aspect, n is an integer of 3-8, or 3-5, or 3 or 4, and R1and R2are the same or different and are each independently nitro or C1-4 alkyl, C M alkoxy, Ce-12 aryl, or Ce-1224SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a C1-3 alkyl or a Ce-io aryl, or R1and R2together form a saturated or unsaturated cyclic structure that can be unsubstituted, or substituted with a C1-3 alkyl group or a carbonyl group. Preferably each R1and R2are the same and are hydrogen.

[0015] In another aspect, n is an integer of 3 or 4, each R1and R2are the same and are hydrogen.

[0016] Cyclic phenylphenoxy phosphazenes of formula (1) can be exemplified by compounds such as triphenyltriphenoxy cyclotriphosphazene, tetraphenyltetraphenoxy cyclotetraphosphazene, and pentaphenylpentaphenoxy cyclopentaphosphazene.

[0017] In an aspect, the cyclic phenylphenoxy phosphazenes can be a mixture of diastereomers of the oxygen and phosphorus-containing ring structures in each unit. In another aspect, the steric arrangement of each of the oxygen and phosphorus-containing ring structures in units adjacent to each other. In a specific cyclic phenylphenoxy phosphazene of formula (1) wherein n is 3 and a and b are 0, the steric arrangement of each of the oxygen and phosphorus- containing ring structures in each unit adjacent to each other cis-cis-cis as shown in formula (la). A trans-cis-trans form is shown in formula (lb).

[0018] A combination of different cyclic phenylphenoxy phosphazenes can be used. Exemplary cyclic phenylphenoxy phosphazenes and methods of making them are disclosed in WO 2022 / 019021 Al, which is incorporated herein by reference in its entirety. It has been found by the inventors hereof that the use of the cyclic phenylphenoxy phosphazenes allows compounding, extruding, and molding of the polyetherimide compositions at lower thicknesses and higher temperatures. In an advantageous aspect the polyetherimide composition can be used to produce thin, transparent, flame retardant parts.

[0019] The polyetherimide component can include polyetherimide homopolymers or copolymers comprising more than 1, for example 2-1000, or 5-500, or 10-100 structural units of formula (3)24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIALwherein each R is independently the same or different, and is a substituted or unsubstituted divalent organic group, such as a substituted or unsubstituted C6-20 aromatic hydrocarbon group, a substituted or unsubstituted straight or branched chain C4-20 alkylene group, a substituted or unsubstituted C3-8 cycloalkylene group, in particular a halogenated derivative of any of the foregoing. In some embodiments R is divalent group of one or more of the following formulas (4)wherein Q1is -O-, -S-, -C(O)-, -SO2-, -SO-, -P(Ra)(=O)- wherein Rais a C1-8 alkyl or C6-12 aryl, - CyH2y- wherein y is an integer from 1-5 or a halogenated derivative thereof (which includes perfluoroalkylene groups), or -(CeHio)z- wherein z is an integer from 1-4. In some embodiments R is m-phenylene, p-phenylene, or a diarylene sulfone, in particular bis(4,4’-phenylene)sulfone, bis(3,4’-phenylene)sulfone, bis(3,3’-phenylene)sulfone, or a combination comprising at least one of the foregoing. In some embodiments, at least 10 mole percent or at least 50 mole percent of the R groups contain sulfone groups such as in particular bis(4,4’-phenylene)sulfone, bis(3,4’- phenylene)sulfone, bis(3,3’-phenylene)sulfone, with the remainder of the R groups, if present, being is m-phenylene or p-phenylene.

[0020] Further in formula (3), T is -O- or a group of the formula -O-Z-O- wherein the divalent bonds of the -O- or the -O-Z-O- group are in the 3,3', 3,4', 4,3', or the 4,4' positions of the aromatic ring bearing the imide moiety, and Z is an aromatic Ce-24 monocyclic or polycyclic moiety optionally substituted with 1-6 C1-8 alkyl groups, 1-8 halogen atoms, or a combination comprising at least one of the foregoing, provided that the valence of Z is not exceeded. Exemplary groups Z include groups of formula (5)24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIALwherein Raand Rbare each independently the same or different, and are a halogen atom, or a monovalent Ci-6 alkyl group, for example; p and q are each independently integers of 0-4; c is 0- 4; and Xais a bridging group connecting the hydroxy-substituted aromatic groups, where the bridging group and the hydroxy substituent of each Ce arylene group are disposed ortho, meta, or para (specifically para) to each other on the Ce arylene group. The bridging group Xacan be a single bond, -O-, -S-, -S(O)-, -S(O)2-, -C(O)-, or a Ci-is organic bridging group. The Ci-is organic bridging group can be cyclic or acyclic, aromatic, or non-aromatic, and can further comprise heteroatoms such as halogens, oxygen, nitrogen, sulfur, silicon, or phosphorous. The Ci-is organic group can be disposed such that the Ce arylene groups connected thereto are each connected to a common alkylidene carbon or to different carbons of the Ci-is organic bridging group. A specific example of a group Z is a divalent group of formula (5 a)wherein Q is -O-, -S-, -C(O)-, -SO2-, -SO-, -P(Ra)(=O)- wherein Rais a C1-8 alkyl or Ce-i2 aryl, or -CyH2y- wherein y is an integer from 1-5 or a halogenated derivative thereof (including a perfluoroalkylene group). In a specific embodiment Z is a derived from bisphenol A, such that Q in formula (5a) is 2,2-isopropylidene.

[0021] In an embodiment in formula (3), R is m-phenylene, p-phenylene, or a combination comprising at least one of the foregoing, and T is -O-Z-O- wherein Z is a divalent group of formula (5a). Alternatively, R is m-phenylene, p-phenylene, or a combination comprising at least one of the foregoing, and T is -O-Z-O wherein Z is a divalent group of formula (5a) and Q is 2,2-isopropylidene.

[0022] The polyether imide component can also include a polyetherimide-siloxane (also known as poly(etherimide-siloxane) copolymers) comprising polyetherimide units of formula (1) and siloxane blocks of formula (7)24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL wherein E has an average value of 2 to 100, 2 to 31, 5 to 75, 5 to 60, 5 to 15, or 15 to 40, each R’ is independently a C1-13 monovalent hydrocarbyl group. For example, each R’ can independently be a Ci-13 alkyl group, C1-13 alkoxy group, C2-13 alkenyl group, C2-13 alkenyloxy group, C3-6 cycloalkyl group, C3-6 cycloalkoxy group, Ce-i4 aryl group, Ce-io aryloxy group, C7-13 arylalkyl group, C7-13 arylalkoxy group, C7-13 alkylaryl group, or C7-13 alkylaryloxy group. The foregoing groups can be fully or partially halogenated with fluorine, chlorine, bromine, or iodine, or a combination comprising at least one of the foregoing. In an embodiment no bromine or chlorine is present, and in another embodiment no halogens are present. Combinations of the foregoing R groups can be used in the same copolymer. In an embodiment, the polysiloxane blocks comprise R’ groups that have minimal hydrocarbon content. In a specific embodiment, an R’ group with a minimal hydrocarbon content is a methyl group.

[0023] The polyetherimide-siloxanes can be formed by polymerization of an aromatic bis(ether anhydride) of formula (5) and a diamine component comprising an organic diamine (6) as described above or a combination of diamines, and a polysiloxane diamine of formula (8)wherein R’ and E are as described in formula (7), and R4is each independently a C2-C20 hydrocarbon, in particular a C2-C20 arylene, alkylene, or arylenealkylene group. In an aspect R4is a C2-C20 alkylene group, specifically a C2-C10 alkylene group such as propylene, and E has an average value of 5 to 100, 5 to 75, 5 to 60, 5 to 15, or 15 to 40. Procedures for making the polysiloxane diamines of formula (8) are well known in the art.

[0024] In some polyetherimide-siloxanes the diamine component can contain 10 to 90 mole percent (mol %), or 20 to 50 mol%, or 25 to 40 mol% of polysiloxane diamine (8) and 10 to 90 mol%, or 50 to 80 mol%, or 60 to 75 mol% of diamine (7), for example as described in US Patent 4,404,350. The diamine components can be physically mixed prior to reaction with the bisanhydride(s), thus forming a substantially random copolymer. Alternatively, block or alternating copolymers can be formed by selective reaction of (7) and (8) with aromatic bis(ether anhydrides (5), to make polyimide blocks that are subsequently reacted together. Thus, the polyetherimide-siloxane copolymer can be a block, random, or graft copolymer. In an aspect the copolymer is a block copolymer.24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL

[0025] Examples of specific poly etherimide- siloxanes are described in US Pat. Nos.4,404,350, 4,808,686 and 4,690,997. In an aspect, the polyetherimide-siloxane has units of formula (9)wherein R’ and E of the siloxane are as in formula (7), R and Z of the imide are as in formula (1), R4is as in formula (8), and n and m are each integers greater than 0, and the sum of n and m is 5 to 100. In a specific aspect of the polyetherimide-siloxane, R of the etherimide is a phenylene, Z is a residue of bisphenol A, R4is n-propylene, E is 2 to 50, 5, to 30, or 10 to 40, n+m is 5 to 100, and each R’ of the siloxane is methyl.

[0026] The relative amount of polysiloxane units and etherimide units in the polyetherimide-siloxane depends on the desired properties, and are selected using the guidelines provided herein. In particular, as mentioned above, the block or graft polyetherimide-siloxane copolymer is selected to have a certain average value of E, and is selected and used in an amount effective to provide the desired weight percent of polysiloxane units in the composition. In an aspect the polyetherimide-siloxane comprises 10-50 weight percent (wt%), 10-40 wt%, or 20-35 wt% polysiloxane units, based on the total weight of the polyetherimide-siloxane. In an aspect, the polyetherimide-siloxane copolymer can have a siloxane content of 10-30 wt%, or 15-25 wt%, or 18-22 wt%.

[0027] In another embodiment, the polyetherimide component can further include polyetherimide sulfones having more than 1, for example 2-1000, or 5-500, or 10-100 structural units of formula (3), wherein at least 10 mole percent or at least 50 mole percent of the R groups contain sulfone groups. In an embodiment, at least 10 mole percent or at least 50 mole percent of the R groups contain sulfone groups in particular bis(4,4’-phenylene)sulfone, bis(3,4’- phenylene)sulfone, bis(3,3’-phenylene)sulfone, or a combination comprising at least one of the foregoing, with the remainder of the R groups, if present, being is m-phenylene or p-phenylene. T is as defined herein, and preferably T is -O-Z-O-, wherein Z is a divalent group of formula (20a), for example, 2,2-(4-phenylene)isopropylidene, i.e., a bisphenol A moiety.

[0028] The polyetherimides can be prepared by any of the methods known to those skilled in the art, including the reaction of an aromatic bis(ether anhydride) of formula (10) or a chemical equivalent thereof, with an organic diamine of formula (11)24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIALH2N-R-NH2 (11) wherein T and R are defined as described above. Copolymers of the polyetherimides can be manufactured using a combination of an aromatic bis(ether anhydride) of formula (10) and an additional bis(anhydride) that is not a bis(ether anhydride), for example pyromellitic dianhydride or bis(3,4-dicarboxyphenyl) sulfone dianhydride. Organophosphorus stabilizers can be added during the process of manufacturing the polyetherimides.

[0029] Illustrative examples of aromatic bis(ether anhydride)s include 2,2-bis[4-(3,4- dicarboxyphenoxy)phenyl]propane dianhydride (also known as bisphenol A dianhydride or BPADA), 3,3-bis[4-(3,4-dicarboxyphenoxy)phenyl]propane dianhydride; 4,4'-bis(3,4- dicarboxyphenoxy)diphenyl ether dianhydride; 4,4'-bis(3,4-dicarboxyphenoxy)diphenyl sulfide dianhydride; 4,4'-bis(3,4-dicarboxyphenoxy)benzophenone dianhydride; 4,4'-bis(3,4- dicarboxyphenoxy)diphenyl sulfone dianhydride; 4,4'-bis(2,3-dicarboxyphenoxy)diphenyl ether dianhydride; 4,4'-bis(2,3-dicarboxyphenoxy)diphenyl sulfide dianhydride; 4,4'-bis(2,3- dicarboxyphenoxy)benzophenone dianhydride; 4,4'-bis(2,3-dicarboxyphenoxy)diphenyl sulfone dianhydride; 4-(2,3-dicarboxyphenoxy)-4'-(3,4-dicarboxyphenoxy)diphenyl-2,2-propane dianhydride; 4-(2,3-dicarboxyphenoxy)-4'-(3,4-dicarboxyphenoxy)diphenyl ether dianhydride; 4-(2,3-dicarboxyphenoxy)-4'-(3,4-dicarboxyphenoxy)diphenyl sulfide dianhydride; 4-(2,3- dicarboxyphenoxy)-4'-(3,4-dicarboxyphenoxy)benzophenone dianhydride; 4,4’- (hexafluoroisopropylidene)diphthalic anhydride; and 4-(2,3-dicarboxyphenoxy)-4'-(3,4- dicarboxyphenoxy)diphenyl sulfone dianhydride. A combination of different aromatic bis(ether anhydride)s can be used.

[0030] Examples of organic diamines include 1 ,6-hexanediamine, 1,7-heptanediamine, 1,8-octanediamine, 1,9-nonanediamine, 1,10-decanediamine, 1,12-dodecanediamine, 1,18- octadecanediamine, 3 -methylheptamethylenediamine, 4,4-dimethylheptamethylenediamine, 4- methylnonamethylenediamine, 5-methylnonamethylenediamine, 2,5- dimethylhexamethylenediamine, 2,5-dimethylheptamethylenediamine, 2, 2- dimethylpropylenediamine, N-methyl-bis (3-aminopropyl) amine, 3- methoxyhexamethylenediamine, l,2-bis(3-aminopropoxy) ethane, bis(3-aminopropyl) sulfide, 1 ,4-cyclohexanediamine, bis-(4-aminocyclohexyl) methane, m-phenylenediamine, p- phenylenediamine, 2,4-diaminotoluene, 2,6-diaminotoluene, m-xylylenediamine, p- xylylenediamine, 2-methyl-4,6-diethyl-l,3-phenylene-diamine, 5-methyl-4,6-diethyl-l,3-24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL phenylene-diamine, benzidine, 3,3 ’-dimethylbenzidine, 3,3 ’-dimethoxybenzidine, 1,5- diaminonaphthalene, bis(4-aminophenyl) methane, bis(2-chloro-4-amino-3,5-diethylphenyl) methane, bis(4-aminophenyl) propane, 2,4-bis(p-amino-t-butyl) toluene, bis(p-amino-t- butylphenyl) ether, bis(p-methyl-o-aminophenyl) benzene, bis(p-methyl-o-aminopentyl) benzene, 1, 3-diamino-4-isopropylbenzene, bis(4-aminophenyl) sulfide, bis-(4-aminophenyl) sulfone (also known as 4,4'-diaminodiphenyl sulfone (DDS)), and bis(4-aminophenyl) ether. Any regioisomer of the foregoing compounds can be used. Ci-4 alkylated or poly(Ci-4)alkylated derivatives of any of the foregoing can be used, for example a polymethylated 1,6- hexanediamine. Combinations of these compounds can also be used. In some embodiments the organic diamine is m-phenylenediamine, p-phenylenediamine, 4,4'-diaminodiphenyl sulfone, 3,4'-diaminodiphenyl sulfone, 3, 3 '-diaminodiphenyl sulfone, or a combination comprising at least one of the foregoing.

[0031] The poly etherimides can have a hydroxyl end group content of less than 1,000 ppm, less than 500 ppm, or less than 100 ppm by weight of the polyetherimides.

[0032] The polyetherimides can have a weight average molecular weight (Mw) of 1 , GOO- 65, 000 grams / mole (Dalton), as measured by gel permeation chromatography (GC), using polystyrene standards. In an aspect, the polyetherimides have an Mw of 10,000-60,000 Daltons, or 20,000-50,000 Daltons, or 30,000-40,000 Daltons, or 40,000-50,000 Daltons, or 46, GOO- 48, 000 Daltons, as measured by gel permeation chromatography, using polystyrene standards. A combination of polyetherimides of different molecular weights can be used. The polyetherimides can be endcapped with an endcapping agent such as phthalic anhydride or aniline. A combination of polyetherimide homopolymers having different Mw’s can be used.

[0033] The polyetherimides can have a glass transition temperature (Tg) of 130-320°C, or 150-210°C, or 160-190°C, or 210-320°C, or 215-312°C, determined by differential scanning calorimetry (DSC) as per ASTM D3418 with a 20°C / min heating rate. The poly etherimides, in particular the homopolymers, can have a melt flow rate (MFR of 1-100 grams per 10 minute (g / 10 min), or 3-80 g / 10 min, or 6-70 g / 10 min, or 9-60 g / 10 min, or 12-50 g / 10 min, or 15-30 g / 10 min, or 18-20 g / 10 min, as measured by American Society for Testing Materials (ASTM) D1238 at 337°C, using a 6.6 kgf or a 2.16 kgf load weight with a 300 second preheat period.

[0034] The polyetherimide component can comprise one or more polyetherimide homopolymers, a polyetherimide-siloxane copolymer, or a combination thereof. When a combination is used, the polyetherimide component can include the polyetherimide homopolymer(s) and the polyetherimide-siloxane copolymer in a weight ratio of 50:1 to 1:9, or24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL50:1 to 1:4, 50:1 to 3:7, or 50:1 to 3:4, or 9:1 to 1:9, or 4:1 to 1:4, 7:3 to 3:7, or 4:3 to 3:4, or 99:1 to 3:1, or 50:1 to 3:1, or 9:1 to 3:1, or 4:1 to 3:1.

[0035] The polyetherimide component can be used in combination with polyestercarbonates, also known as poly(carbonate-ester)s, polycarbonatesters, or poly(ester-carbonates)s. The polyester-carbonates comprise recurring carbonate repeating units of formula (10)wherein at least 60 percent of the total number of R1groups are aromatic, or each R1contains at least one Ce-30 aromatic group. In an aspect, each R1can be derived from a dihydroxy compound such as an aromatic dihydroxy compound of formula (11) or a bisphenol of formula (12).In formula (2), each Rbis independently a halogen atom, for example bromine, a Ci-io hydrocarbyl group such as a Ci-io alkyl, a halogen-substituted Ci-io alkyl, a Ce-io aryl, or a halogen-substituted Ce-io aryl, and n is 0-4.

[0036] In formula (12), Raand Rbare each independently a halogen, C1-12 alkoxy, or Ci- 12 alkyl, and p and q are each independently integers of 0-4, such that when p or q is less than 4, the valence of each carbon of the ring is filled by hydrogen. In an aspect, p and q is each 0, or p and q is each 1, and Raand Rbare each a C1-3 alkyl group, preferably methyl, disposed meta to the hydroxy group on each arylene group. Xais a bridging group connecting the two hydroxysubstituted aromatic groups, where the bridging group and the hydroxy substituent of each Ce arylene group are disposed ortho, meta, or para (preferably para) to each other on the Ce arylene group, for example, a single bond, -O-, -S-, -S(O)-, -S(O)2-, -C(O)-, or a Ci-is organic group, which can be cyclic or acyclic, aromatic or non-aromatic, and can further comprise heteroatoms such as halogens, oxygen, nitrogen, sulfur, silicon, or phosphorous. For example, Xacan be a substituted or unsubstituted C3-18 cycloalkylidene; a C1-25 alkylidene of the formula -C(Rc)(Rd) - wherein Rcand Rdare each independently hydrogen, C1-12 alkyl, C1-12 cycloalkyl, C7-12 arylalkyl, C1-12 heteroalkyl, or cyclic C7-12 heteroarylalkyl; or a group of the formula -C(=Re)- wherein Reis a divalent C1-12 hydrocarbon group.

[0037] In addition to units according to formula (10), the poly(carbonate-ester) further comprises repeating ester units of formula (13)24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIALwherein J is a divalent group derived from a dihydroxy compound (which includes a reactive derivative thereof), and can be, for example, a Ci-io alkylene, a C6-20 cycloalkylene, a C5-20 arylene, or a polyoxyalkylene group in which the alkylene groups contain 2-6 carbon atoms, preferably, 2, 3, or 4 carbon atoms; and T is a divalent group derived from a dicarboxylic acid (which includes a reactive derivative thereof), and can be, for example, a C1-20 alkylene, a C5-20 cycloalkylene, or a C6-20 arylene. Copolyesters containing a combination of different T or J groups can be used. The polyester units can be branched or linear.

[0038] Specific dihydroxy compounds include aromatic dihydroxy compounds of formula (11) (e.g., resorcinol), bisphenols of formula (12) (e.g., bisphenol A), a Ci-g aliphatic diol such as ethane diol, n-propane diol, i-propane diol, 1,4-butane diol, 1,4-cyclohexane diol, 1 ,4-hydroxymethylcyclohexane, or a combination thereof dihydroxy compounds. Aliphatic dicarboxylic acids that can be used include C5-20 aliphatic dicarboxylic acids (which includes the terminal carboxyl groups), preferably linear Cg-i2 aliphatic dicarboxylic acid such as decanedioic acid (sebacic acid); and alpha, omega-Ci2 dicarboxylic acids such as dodecanedioic acid (DDDA). Aromatic dicarboxylic acids that can be used include terephthalic acid, isophthalic acid, naphthalene dicarboxylic acid, 1 ,4-cyclohexane dicarboxylic acid, or a combination thereof acids. A combination of isophthalic acid and terephthalic acid wherein the weight ratio of isophthalic acid to terephthalic acid is 91:9 to 2:98 can be used.

[0039] Specific ester units include ethylene terephthalate units, n-proplyene terephthalate units, n-butylene terephthalate units, ester units derived from isophthalic acid, terephthalic acid, and resorcinol (ITR ester units), and ester units derived from sebacic acid and bisphenol A. The molar ratio of ester units to carbonate units in the poly(ester-carbonate)s can vary broadly, for example 1:99 to 99:1, or 10:90 to 90:10, or 25:75 to 75:25, or 2:98 to 15:85. In some aspects the molar ratio of ester units to carbonate units in the polyester-carbonates can vary from 1:99 to 30: 70, or 2:98 to 25:75, or 3:97 to 20:80, or 5:95 to 15:85.

[0040] The polyetherimide composition can optionally further include an additive composition including at least one additive. Additives can be selected to achieve a desired property, with the proviso that the additives are also selected so as to not significantly adversely affect a desired property of the polyetherimide composition. Any additives can be mixed at a suitable time during the mixing of the components for forming the polyetherimide composition. Exemplary additives can include, for example, an impact modifier, flow modifier, reinforcing24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL agent (e.g., glass fibers), antioxidant, heat stabilizer, light stabilizer, ultraviolet (UV) light stabilizer, UV absorbing additive, plasticizer, lubricant, release agent (such as a mold release agent), antistatic agent, anti-fog agent, antimicrobial agent, colorant (e.g., a dye or pigment), surface effect additive, radiation stabilizer, flame retardant, anti-drip agent (e.g., a PTFE- encapsulated styrene-acrylonitrile copolymer (TSAN)), or a combination thereof. In an aspect, the additive can be a thermal stabilizer, a mold release agent, a flame retardant, a colorant, or a combination thereof. The additives are used in the amounts generally known to be effective. For example, the total amount of any single additives (other than any impact modifier or reinforcing agent) can be 0.001-10.0 wt%, or 0.01-5 wt%, each based on the total weight of the polymer in the polyetherimide composition.

[0041] In an aspect, the poly etherimide compositions exclude impact modifiers and reinforcing agents such as glass fibers. When glass fibers are included, the flowability of the polyetherimide composition can be adversely affected, which is generally not desirable for molding thin parts, such as in consumer electronics applications. Furthermore, glass fibers can contribute to undesirable surface defects in molded parts.

[0042] In some aspects, the polyetherimide compositions can further include at least one additional polymer in addition to the polyetherimide, polyetherimide-siloxane, and polycarbonate-ester. Examples of such additional polymers include PPSU (polyphenylene sulfone, PSU (poly sulfone), PPE (polyphenylene ether), PFA (perfluoroalkoxy alkane), MFA (co-polymer of TFE tetrafluoroethylene and PFVE perfluorinated vinyl ether), FEP (fluorinated ethylene propylene polymers), PPS (poly (phenylene sulfide), PTFE (polytetrafluoroethylene), PA (polyamide), PBI (polybenzimidizole), PAI (poly(amide-imide)), poly(ether sulfone), poly(aryl sulfone), polyphenylene, poly benzoxazoles, polybenzthiazoles, as well as blends and co-polymers thereof. When present, the additional polymer can be present in an amount from more than 0-20 wt%, or 0.1-15 wt%, and or 0.5-10 wt%, all based on the total weight of the polyetherimide composition. In some embodiments, no polymer other than a polyetherimide homopolymer and / or a polyetherimide-siloxane and / or polyester-carbonate as described herein is present in the polyetherimide composition.

[0043] The polyetherimide compositions can be essentially free of certain metals or metal ions. In an embodiment, the polyetherimide compositions contain less than 20 ppm or less than 10 ppm by weight of each of metals or ions of Na, Fe, Co, Ni, Mo, Ca, and Mg. The poly etherimide compositions can also contain less than 20 ppm or less than 10 ppm by weight of transition metals or ions thereof such as Cr, Mn, Ti, and Zn.24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL

[0044] The relative amount of each component in the polyetherimide composition can be adjusted to provide the desired characteristics of an article, for example an article molded from the composition. In an aspect, the polyetherimide composition can include a polymer component including 60-100 wt% of the polyetherimide and 0-40 wt%, or more than 0-40 wt%, of the polyester-carbonate, based on the wight of the polymer component; and 1-10 wt% of the cyclic phenylphenoxy phosphazene and 0-10 wt%, or more than 0-10 wt% of an additive composition, each based on the weight of the polymer component. In another aspect, the polyetherimide composition can include a polymer component including 70-100 wt% of the polyetherimide and 0-30 wt%, or more than 0-30 wt%, of the polyester-carbonate, based on the wight of the polymer component; and 1-7 wt% of the cyclic phenylphenoxy phosphazene and 0-10 wt%, or more than 0-10 wt% of an additive composition, each based on the weight of the polymer component.

[0045] The relative amounts of each component in the poly etherimide composition can also be calculated based on the total weight of the composition. In an aspect, the polyetherimide composition includes 60-99 wt%, preferably 80-99 wt% of a polymer component based on the total weight of the composition. In an aspect, the polyetherimide composition includes 60-99 wt%, preferably 80-99 wt% of a poly etherimide component based on the total weight of the composition. In an aspect, the polyetherimide composition includes 0-40 wt%, preferably 10-30 wt% of a polyester-carbonate based on the total weight of the composition. In an aspect, the poly etherimide composition includes 1-10 wt%, preferably 1-5 wt% of a cyclic phenylphenoxy phosphazene based on the total weight of the composition. In an aspect, the polyetherimide composition includes more than 0 to 10 wt%, preferably 0.1-5 wt% of an additive composition based on the total weight of the composition. In an aspect, the polyetherimide composition includes more than 0 to 10 wt%, preferably 0.1-5 wt% of a phosphorous containing additive based on the total weight of the composition.

[0046] The polyetherimide composition can further include a phosphorous containing additive in addition to the disclosed cyclic phenylphenoxy phosphazene. The phosphorus containing additive can include, for example, resorcinol-bis(diphenyl)phosphate, bisphenol-A diphenyl phosphate, triphenyl phosphate, diphenylcresylphosphate, melamine phosphate, diethylphosphinic acid, tri-o-cresylphosphate, tri-m-cresylphosphate, tri-p-cresylphosphate, tris(chloropropyl)phosphate, tris(2-chloroethyl)phosphate, tris(l,3-dichloro-2-propyl)phosphate, tetrekis(2-chlorethyl)dichloroisopentyldiphosphate, or a combination thereof.

[0047] The polyetherimide compositions can advantageously exhibit one or more desirable properties. As stated above, the polyetherimide compositions have excellent flame24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL retardant properties. A molded sample of the polyetherimide compositions can have a UL 94 VO rating at a thickness of greater than or equal to 0.6 mm, for example 0.6 to 2.0 mm, or 0.6 to 1.0 mm. In another aspect, a molded sample of the polyetherimide compositions can have a UL 94 V0 rating at greater than or equal to 0.6 mm, for example at 0.6-0.8 mm, or at 0.8 mm, or 0.7 mm, or 0.6 mm. The polyetherimide compositions are thermally stabilized and can also have excellent resistance to thermal degradation.

[0048] The polyetherimide composition can have a melt flow rate of more than 5 g / 10 minute at 337°C and 2.16 kg as determined in accordance with ASTM D1238.

[0049] The polyetherimide compositions can have a yellowness index of less than 100, less than 90, or less than 80 measured in accordance with ASTM D1925 using a 1.0 mm thick injection molded specimen.

[0050] In particular, the polyetherimide compositions can have a combination of a UL 94 V0 rating at a thickness of greater than or equal to 0.6 mm, for example 0.6 to 2.0 mm, or at less than or equal to 0.8 mm, for example 0.6-0.8 mm, or at 0.8 mm, or at 0.7 mm, or at 0.6 mm; a melt flow rate of more than 5 g / 10 minute at 337°C and 2.16 kg as determined in accordance with ASTM D1238; and a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM DI 003. For example, the polyetherimide compositions can have a combination of a UL 94 V0 rating at a thickness of 0.8 mm, or at 0.6 mm; a melt flow rate of more than 5 g / 10 minute at 337°C and 2.16 kg as determined in accordance with ASTM D1238; and a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM D1003.

[0051] In another aspect, the polyetherimide compositions can have a combination of a UL 94 V0 rating at a thickness of greater than or equal to 0.6 mm, for example 0.6 to 2.0 mm, or at less than or equal to 0.8 mm, for example 0.6-0.8 mm, or at 0.8 mm, or at 0.7 mm, or at 0.6 mm; a melt flow rate of more than 5 g / 10 minute at 337°C and 2.16 kg as determined in accordance with ASTM D1238; and a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM DI 003. For example, the polyetherimide compositions can have a combination of a UL 94 V0 rating at a thickness of 0.8 mm or 0.6 mm; a melt flow rate of more than 5 g / 10 minute at 337°C and 2.16 kg as determined in accordance with ASTM DI 238; and a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM D1003

[0052] In addition, the polyetherimide composition can have one or more of a flexural modulus of greater than 3000 MPa, a storage modulus of equal to or greater than 65 Pa, for24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL example 65 to 200 Pa, determined according to ASTM D4440-15 at 23°C on extruded pellets of the poly etherimide compositions, a heat deflection temperature of greater than 150°C as measured according to ASTM D648, at 0.45 MPa and a 3.2 mm plaque.

[0053] The polyetherimide compositions can be in the form of pellets or powder (fines).

[0054] The polyetherimide compositions can be formed into an article by any number of methods including shaping, extruding (including profile extrusion), thermoforming, and molding, including injection molding, compression molding, gas assist molding, structural foam molding, and blow molding. In some embodiments, a method of forming an article comprises shaping, extruding, blow molding, or injection molding the polyetherimide compositions to form the article. The polyetherimide compositions can also be formed into articles using thermoplastic processes such as film extrusion, sheet extrusion, melt casting, blown film extrusion, and calendaring. Co-extrusion and lamination processes can be used to form composite multi-layer films or sheets. The article is a sheet, film, multilayer sheet, multilayer film, molded part, extruded profile, coated part, pellets, powder, foam, fiber, fibrids, flaked fibers, or a combination comprising at least one of the foregoing.

[0055] In an aspect, the article is a component for an electronic device such as a computer (e.g., desktop or machine-associated computer, laptop computer, or notebook computer), or cell phone or other hand-held device. The component for the electronic device can be a structural component such as a sidewall or cover, e.g., a battery cover.

[0056] In a specific embodiment, a polyetherimide composition includes 60-100 wt%, preferably 70-30 wt% of a polyetherimide component, and 0-40 wt%, preferably 0-30 wt%, of a polyester-carbonate; 1-10 wt%, or 0-5 wt%, based on the total weight of the polymer component, of a cyclic phosphazene of formula (1) wherein n is an integer of 3-8, or 3-5, or 3-4, and a and b are 0; and 0-10 wt%, or 0-5 wt%, based on the total weight of the polymer component, of an additive composition; wherein a molded sample of the poly etherimide composition has a UL 94 V0 rating at a thickness of 0.6 to 2.0 mm, or a molded sample of the polyetherimide composition has a UL 94 V0 rating at a thickness of 0.8 mm or 0.6 mm, and a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM D1003. In this embodiment, the polyetherimide component can include one or more polyetherimide homopolymers, a polyetherimide-siloxane copolymer, or a combination thereof.

[0057] In a specific embodiment, a poly etherimide composition including 60-100 wt%, preferably 70-30 wt% of a polyetherimide component, and more than 0-40 wt%, preferably more than 0-30 wt%, of a polyester-carbonate; 1-10 wt%, or 1-5 wt%, based on the total weight24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL of the polymer component, of a cyclic phosphazene of formula (1) wherein m is an integer of 3- 8 or 3-5, or 3-4, and a and b are 0; and more than 0-10 wt%, or more than 0-5 wt%, based on the total weight of the polymer component, of an additive composition; wherein a molded sample of the polyetherimide composition has a UL 94 V0 rating at a thickness of 0.6-2.0 mm, or a molded sample of the polyetherimide composition has a UL 94 V0 rating at a thickness of 0.8 or of 0.6 mm, and a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM DI 003. In this embodiment, the poly etherimide component can include one or more polyetherimide homopolymers, a polyetherimide-siloxane copolymer, or a combination thereof. Further in this embodiment, the polyester-carbonate is an (isophthalic acid-terephthalic acid- resorcinol) - bisphenol A polyester-carbonate.

[0058] The above described and other features are exemplified by the following examples.EXAMPLES

[0059] The following components are used in the examples. Unless specifically indicated otherwise, the amount of each component is in wt%, based on the total weight of the composition.

[0060] The materials shown in Table 1 were used.Table 1. Materials24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL

[0061] Samples were compounded on a 25 mm Coperion Werner Pfleiderer ZSK26Mc co-rotating twin-screw extruder with a vacuum vent. The temperature profile and other extruder settings are provided in Table 2.Table 2. Compounding profile on Coperion W&P ZSK26Mc

[0062] The compounded strands were cooled in a water bath before pelletizing. The pellets were dried for four hours at 135-150°C in a forced air-circulating oven before injection molding. Sample parts were molded on Fanuc S-2000i molding machine with an ASTM-family tool. Molding settings are provided in Table 3 for the various comparative examples (CEx) and example (Ex).Table 3. Injection molding profile24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL| Mold temp | °C | 150 | 150 |

[0063] The test specimens were aged under two conditions: 1) 23°C, 50% RH for 48 hours; 2) Testing specimens were placed in an oven at 70 ± 2 °C, for 168 ± 2 hours. These specimens were cooled down in a desiccator at 23 ± 2 °C, < 20% RH for no less than 4 hours 23°C, 50% RH for 48 hours before flammability testing. Samples were 0.6 mm thick. Flammability tests were performed following the procedure of Underwriter’s Laboratory Bulletin 94 VX. Several ratings can be applied based on the rate of burning, time to extinguish, ability to resist dripping, and whether or not drips are observed or ignite the cotton. According to this procedure, materials can be classified as UL94 HB, V0, VI, V2, 5VA, or 5VB at a given sample thickness. The following definitions are used as shown in Table 4. Total flame-out-times for all bars (FOT = tl + t2) were determinedTable 4.

[0064] Other sample size and testing methods are described in Table 5.Table 5.

[0065] Exemplary polyetherimide compositions of the disclosure (Exl, Ex2) and control or comparative compositions (CExl to CEx2), were formulated and tested as described above.The formulations and results are shown in Table 6.Table 6.24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL

[0066] The data shows that PEI with no flame retardant additives (CExl) can only achieve a rating of V2 at a sample thickness of 0.6 mm. PEI with a flame retardant additive (BPADP, CEx2) also has a rating of V2 at a sample thickness of 0.6 mm. Formulation of the PEI composition with the diphenoxy phosphazene- 1 (Ex 1) failed to provide a composition that could be extruded. Without being bound by theory, it is believed that the failure was due to the lower decomposition temperature of the diphenoxy phosphazene- 1 compared to the phenylphenoxy phosphazene-2. As different phosphazenes have significantly different degradation temperatures, even structurally similar phosphazenes can have entirely different suitability for inclusion in a composition. Comparison of Exl and Ex2 in Table 6 demonstrates that phosphazene selection is critically important, as extrusion failed when Phosphaene- 1 was used instead of Phosphazene-2. The extrusion failure may be due to phosaphaze degradation at the processing temperature. Addition of a lower Tg resin or lower viscosity resins such as LCP can reduce the processing temperature needed, thereby slowing degradation of the phosphazene. Accordingly, phosphazene suitability depends on the specific components of the formulation, the processing parameters, and also on the inclusion of agents such as compatibilizers.

[0067] As shown in Ex2, which included the phenylphenoxy phosphazene-2, flame retardant performance was significantly improved, to V0 at a sample thickness of 0.6 mm. Advantageously, transparency was also maintained, and the flowability and modulus / strength of Ex2 increased compared CExl with no flame retardant additive. Ex2 with the phenylphenoxy phosphazene further exhibited higher heat resistance than CEx2 with BPADP.

[0068] Exemplary polyetherimide / polyester-carbonate compositions (Ex3 to Ex4) and control or comparative compositions (CEx3 to CEx4), were formulated and tested as described above. The formulations and results are shown in Table 7 Table 7.24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL

[0069] The results show that both diphenoxy phosphazene- 1 and the phenylphenoxy phosphazene-2 could be successfully extruded. The vertical burning test performance at a sample thickness of 0.6 mm was further improved from V2 in CEx3 (no flame retardant) and CEx4 (BPADP) to VO in Ex3 (diphenoxy phosphazene- 1) and Ex4 (phenylphenoxy phosphazene-2). Similarly to the PEI compositions of the prior examples, the addition of the phosphazenes had almost no influence on haze and transmittance. In addition, use of the phenylphenoxy phosphazene-2 (Ex4) resulted in higher heat resistance than the diphenoxy phosphazene- 1 (Ex3).

[0070] The invention is further illustrated by the following aspects.

[0071] Aspect 1. A poly etherimide composition includes 60-100 wt% of a polyetherimide component, and 0-40 wt% of a polyester-carbonate; 1-10 wt%, based on the total weight of the polymer component, of a cyclic phenylphenoxy phosphazene of formula (1)wherein n is an integer of 3-8, or 3-5, or 3-4; R1and R2are each independently nitro or Ci-8 alkyl, Ci-8 alkoxy, Ce-20 aryl, or Ce-20 aryloxy wherein each of the foregoing groups is24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL unsubstituted or substituted with a Ci-6 alkyl or a Ce-20 aryl, or R1and R2together form a saturated or unsaturated cyclic structure that may be unsubstituted, or substituted with a Ci-6 alkyl group or a carbonyl group, a and b are each independently an integer of 0-4, and each phosphazene unit is the same or different; wherein a molded sample of the polyetherimide composition has a UL 94 VO rating at a thickness of greater than or equal to 0.6 mm, preferably 0.6 to 1.0 mm.

[0072] Aspect 2. The polyetherimide composition of aspect 1, wherein in the cyclic phenylphenoxy phosphazene, n is an integer of 3-6; R1and R2is each independently nitro or Ci-4 alkyl, Ci-4 alkoxy, Ce-12 aryl, or Ce-12 aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a C1-3 alkyl or a Ce-io aryl, or R1and R2together form a saturated or unsaturated cyclic structure that can be unsubstituted, or substituted with a C1-3 alkyl group or a carbonyl group; and a and b are each independently 0-2.

[0073] Aspect 3. The poly etherimide composition of aspect 1, wherein in the cyclic phenylphenoxy phosphazene, n is an integer of 3-10; and a and b are each 0.

[0074] Aspect 4. The polyetherimide composition of aspect 1, wherein the polyetherimide component comprises a polyetherimide-siloxane.

[0075] Aspect 5. The poly etherimide composition of aspect 1, wherein the polymer component comprises the polyester-carbonate.

[0076] Aspect 6. The polyetherimide composition of aspects 1, wherein the polyestercarbonate is an (isophthalic acid-terephthalic acid-resorcinol) - bisphenol A polyester-carbonate.

[0077] Aspect 7. The polyetherimide composition of any one of aspects 1 to 6, wherein in the cyclic phenylphenoxy phosphazene, n is an integer of 3 or 4 and a and b are 0; the polyetherimide comprises structural units derived from 2,2-bis[4-(3,4- dicarboxyphenoxy)phenyl] propane dianhydride with meta-phenylene diamine; and the polyester-carbonate is present and is an (isophthalic acid-terephthalic acid-resorcinol) - bisphenol A polyester-carbonate.

[0078] Aspect 8. The poly etherimide composition of any one of claims 1 to 7, comprising the polymer component comprising, based on the total weight of the polymer component, 70-100 wt% of a polyetherimide component, and more than 0-30 wt% of a polyester-carbonate; and 1-7 wt%, based on the total weight of the polymer component, of the cyclic phenylphenoxy phosphazene; more than 0-10 wt%, based on the total weight of the polymer component, of an additive composition.24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL

[0079] Aspect 9. The polyetherimide composition of any one of aspects 1 to 8, further comprising a phosphorous containing additive.

[0080] Aspect 10. The poly etherimide composition of any one or more of aspects 1 to 8, claims 1 to 8, wherein the molded sample has UL 94 V0 rating at a thickness of 0.6 mm or 0.8 mm.

[0081] Aspect 11. The poly etherimide composition of any one or more of aspects 1 to 10, wherein a molded sample of the composition has a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM DI 003.

[0082] Aspect 12. A method of making the polyetherimide composition of any of aspects 1 to 11, the method comprising melt-mixing the components of the poly etherimide composition, and, optionally, extruding the melt-mixed composition.

[0083] Aspect 13. An article comprising the polyetherimide composition of any of aspects 1 to 12.

[0084] Aspect 14. The article of aspect 13, wherein the article is a structural component of an electronic device.

[0085] Aspect 15. A method of manufacturing the article of aspect 13 or aspect 14, comprising molding, casting, or extruding the polyetherimide composition to provide the article.

[0086] Compounds are described using standard nomenclature. For example, any position not substituted by any indicated group is understood to have its valency filled by a bond as indicated, or a hydrogen atom. A dashthat is not between two letters or symbols is used to indicate a point of attachment for a substituent. For example, -CHO is attached through carbon of the carbonyl group.

[0087] As used herein, the term “hydrocarbyl” and “hydrocarbon” refers broadly to a substituent comprising carbon and hydrogen, optionally with 1-3 heteroatoms, for example, oxygen, nitrogen, halogen, silicon, sulfur, or a combination thereof; “alkyl” refers to a straight or branched chain, saturated monovalent hydrocarbon group; “alkylene” refers to a straight or branched chain, saturated, divalent hydrocarbon group; “aryl” refers to an aromatic monovalent group containing only carbon in the aromatic ring or rings; “arylene” refers to an aromatic divalent group containing only carbon in the aromatic ring or rings; “alkylarylene” refers to an aryl group that has been substituted with an alkyl group as defined above, with 4-methylphenyl being an exemplary alkylarylene group; “arylalkylene” refers to an alkyl group that has been substituted with an aryl group as defined above, with benzyl being an exemplary arylalkylene group. In connection with defining two or more variables or groups herein, “each24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL independently” means tha the variables or groups can be the same or different.

[0088] Unless otherwise indicated, each of the foregoing groups can be unsubstituted or substituted, provided that the substitution does not significantly adversely affect synthesis, stability, or use of the compound. The term “substituted” as used herein means that at least one hydrogen on the designated atom or group is replaced with another group, provided that the designated atom’s normal valence is not exceeded. When the substituent is oxo (i.e., =0). then two hydrogens on the atom are replaced. Combinations of substituents and / or variables are permissible provided that the substitutions do not significantly adversely affect synthesis or use of the compound. Groups that can be present on a substituted position include (-NO2), cyano (- CN), halogen, thiocyano (-SCN), C2-6 alkanoyl (e.g., acyl (H3CC(=O)-); carboxamido; C1-6 or C1-3 alkyl, cycloalkyl, alkenyl, and alkynyl; C1-6 or C1-3 alkoxy; Ce-io aryloxy such as phenoxy; C1-6 alkylthio; C1-6 or C1-3 alkylsulfinyl; C1-6 or C1-3 alkylsulfonyl; C6-12 aryl having at least one aromatic rings (e.g., phenyl, biphenyl, naphthyl, or the like, each ring either substituted or unsubstituted aromatic); C7-19 arylalkylene having 1-3 separate or fused rings and 6-18 ring carbon atoms; or arylalkoxy having 1-3 separate or fused rings and 6-18 ring carbon atoms. The stated number of carbon atoms includes any substituents.

[0089] All references cited herein are incorporated by reference in their entirety. While typical embodiments have been set forth for the purpose of illustration, the foregoing descriptions should not be deemed to be a limitation on the scope herein. Accordingly, various modifications, adaptations, and alternatives can occur to one skilled in the art without departing from the spirit and scope herein.

Claims

24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIALCLAIMSWhat is claimed is:

1. A polyetherimide composition comprising: a polymer component comprising, based on the total weight of the polymer component 60-100 wt% of a poly etherimide component, and0-40 wt% of a polyester-carbonate;1-10 wt%, based on the total weight of the polymer component, of a cyclic phenylphenoxy phosphazene of the formulawherein n is an integer of 3-8;R1and R2are the same or different and are each independently nitro or Ci-8 alkyl, Ci-8 alkoxy, Ce-20 aryl, or Ce-20 aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a Ci-6 alkyl or a Ce-20 aryl, orR1and R2together form a saturated or unsaturated cyclic structure that may be unsubstituted, or substituted with a Ci-6 alkyl group or a carbonyl group; a and b are each independently an integer of 0-4; and each phosphazene unit is the same or different; wherein a molded sample of the polyetherimide composition has a UL 94 V0 rating at a thickness of greater than or equal to 0.6 mm, preferably 0.6 to 1.0 mm.24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL2. The polyetherimide composition of claim 1, wherein in the cyclic phenylphenoxy phosphazene, n is an integer of 3-6;R1and R2is each independently nitro or Ci-4 alkyl, Ci-4 alkoxy, Ce-i2 aryl, or Ce-i2 aryloxy wherein each of the foregoing groups is unsubstituted or substituted with a C1-3 alkyl or a Ce-io aryl, orR1and R2together form a saturated or unsaturated cyclic structure that can be unsubstituted, or substituted with a C1-3 alkyl group or a carbonyl group; and a and b are each independently 0-2.

3. The polyetherimide composition of claim 1, wherein in the cyclic phenylphenoxy phosphazene, n is an integer of 3 or 4; and a and b are each 0.

4. The poly etherimide composition of claim 1, wherein the poly etherimide component comprises a polyetherimide-siloxane.

5. The poly etherimide composition of any one of claims 1 to 4, wherein the polymer component comprises the polyester-carbonate.

6. The polyetherimide composition of claim 5, wherein the polyester-carbonate is an (isophthalic acid-terephthalic acid-resorcinol) - bisphenol A polyester-carbonate.

7. The polyetherimide composition of any one of claims 1 to 6, wherein in the cyclic phenylphenoxy phosphazene, n is an integer of 3 or 4 and a and b are 0; the polyetherimide comprises structural units derived from 2,2-bis[4-(3,4- dicarboxyphenoxy)phenyl] propane dianhydride with meta-phenylene diamine; and the polyester-carbonate is present and is an (isophthalic acid-terephthalic acid-resorcinol) - bisphenol A polyester-carbonate.

8. The polyetherimide composition of any one of claims 1 to 7, comprising the polymer component comprising, based on the total weight of the polymer component24SHPP0060-WO-PCT(SS240081PCT) CONFIDENTIAL70-100 wt% of a poly etherimide component, and more than 0-30 wt% of a polyester-carbonate; and1-7 wt%, based on the total weight of the polymer component, of the cyclic phenylphenoxy phosphazene; more than 0-10 wt%, based on the total weight of the polymer component, of an additive composition.

9. The polyetherimide composition of any one of claims 1 to 8, further comprising a phosphorous containing additive.

10. The polyetherimide composition of any one of claims 1 to 8, wherein the molded sample has UL 94 V0 rating at a thickness of 0.6 mm or 0.8 mm.

11. The poly etherimide composition of any one of claims 1 to 10, wherein a molded sample of the composition has a haze of less than 10% at a thickness of 1 mm as determined in accordance with ASTM DI 003.

12. A method of making the polyetherimide composition of any of claims 1 to 11, the method comprising melt-mixing the components of the polyetherimide composition, and, optionally, extruding the melt-mixed composition.

13. An article comprising the polyetherimide composition of any of claims 1 to 12.

14. The article of claim 13, wherein the article is a structural component of an electronic device.

15. A method of manufacturing the article of claim 13 or claim 14, comprising molding, casting, or extruding the polyetherimide composition to provide the article.

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