JPH06506979A - Blend of polyphenylene ether resin, polyetherimidosiloxane copolymer and pentaerythritol tetrabenzoate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] polyphenylene ether resin, polyetherimidosiloxane copolymer and Blends of pentaerythritol tetrabenzoate Field of the invention The present invention is based on polyphenylene ether resin and polyetherimidosiloxane copolymer. including good processability and flame retardancy as indicated by melt viscosity. The present invention relates to a blend composition exhibiting an advantageous combination of properties.

Background of the invention Polyphenylene ether resins are well known in the industry and can be used over a wide temperature range. Showing the chemical, physical and electrical properties of the desired combination. combination of this property Due to their composition, polyphenylene ether resins are suitable for a wide range of applications.

Polyphenylene ether resins are characterized by their chemical resistance, processability and/or other characteristics. Blend with different resins to improve properties and expand its application field. is often coded.

For example, White (Wbilel et al., U.S. Pat. No. 4.431.779) discloses a blend composition consisting of polyphenylene ether and polyetherimide. has been done. These blends exhibit good impact strength along with good mechanical properties It is said that U.S. Patent No. 4.873°287 to Holubi et al. Includes polyphenylene ether, polyetherimide, and vinyl aromatization. A blend composition consisting of a block copolymer of a compound and an alkene compound is disclosed. ing. These blends are said to exhibit high glass transition temperatures and excellent bending properties. It is.

Polyphenylene ether resins contain phosphorus and phosphorus to improve the flame retardant properties of the resin. /Or substances containing halogens are often added. However, such a link The use of substances containing carbon and/or halogens is inappropriate for several reasons. It can be beneficial. For example, substances containing halogens can react and corrode during resin processing. May form edible by-products. Co-pending application filed on August 3, 1990 Nakano Rock's application number 071563,750 contains polyphenylene. Blend composition consisting of ether and polyetherimidosiloxane copolymer things are disclosed.

These compositions are said to exhibit low flammability and contain phosphorus and/or halogens. It is advantageous in that it does not require substances containing . In addition, flame-retardant silicone U.S. Pat. No. 4,690,997 to U.S. Pat. and No. 4,808.686.

There is an increasing demand for using polyphenylene ether resin compositions in various applications. Polyphenylene ether with improved combination properties due to its large size There continues to be a need to provide resin compositions.

Therefore, an object of the present invention is to provide an improved polyphenylene ether resin composition. Is Rukoto. Another object of the invention is to provide a polyphenylene ether exhibiting good flame retardant properties. An object of the present invention is to provide a resin composition. Another object of the present invention is to Exhibits flame retardant properties and good processability, especially as expressed by melt viscosity. An object of the present invention is to provide a polyphenylene ether resin composition.

For these and other purposes, polyphenylene ether resins, polyether limidosiloxane copolymer and pentaerythritol tetrabenzoate This is achieved by the blend composition of the present invention comprising. The inventors have discovered that polyphenylene Peptide into a composition containing a lene ether resin and a polyetherimidosiloxane copolymer. Addition of esterythritol tetrabenzoate results in polyetherimide The melt viscosity is reduced while maintaining the good flame retardant properties of xane copolymers. It has therefore been discovered that compositions with improved processability can be obtained. Preferred embodiment In the case of a vinyl aromatic hydrocarbon and an alkene hydrocarbon The block copolymer of the compound is added in a sufficient amount to improve the impact strength of the blend composition. Contains in amount.

These and other objects and advantages obtained by the compositions of the invention will become more fully apparent from the detailed description below.

detailed description The blend composition of the present invention comprises polyphenylene ether resin, polyetherimide resin, Contains loxane copolymer and pentaerythritol tetrabenzoate. child These compositions have good processability, especially manifested as a reduced melt viscosity. , and exhibit an advantageous combination of properties including good flame retardant properties.

Polyphenylene ether resins are well known in the industry and are generally represented by the formula: It will be done.

Here, R1 is each independently halogen, alkyl, aryl and alkoxy qζ is from 0 to 4, and p is at least 20 It is. R1 force (if it consists of an alkyl group, aryl group or alkoxy group, Suitably, the group contains about 1 to about 12 carbon atoms.

Polyphenylene ether copolymers suitable for use in the present invention are well known in the industry. are available from the corresponding phenols or their reactive derivatives as known in the industry. It can be manufactured by any of several methods. polyphenylene ether tree Examples of fats and methods of making them are given in U.S. Pat. No. 3,306,874 and Hu. No. 3,306,875, Stamatov (StamNall) U.S. Pat. No. 3.306,875; 257.357 and 3.257,358, and Brown (S, BB U.S. Pat. No. 4,935,472 to U.S. Pat. (incorporated herein). Description and billing Throughout the range, the term "polyphenylene ether resin" refers to substituted unsubstituted polyphenylene ether polymers, substituted polyphenylene ether polymers polypolymers, polyphenylene ether copolymers and blends thereof. It is assumed that

As a preferred polyphenylene ether polymer suitable for use in the present invention is poly(2,6-dimethyl-1゜4-)unicine)ether, poly(2,3, 6-drimethyl-1,4-phenylene)ether, poly(2,6-diethyl-1) , 4-phenylene) ether, poly(2-methyl-6-broby-1.4~) ether Poly(2,6-diprobyl-1,4-phenylene) ether , poly(2-ethyl-6-brobyl-1,4-)unisine)ether, poly(2-ethyl-6-brobyl-1,4-)unisine)ether, , 6-dilauryl-1,4-phenylene) ether, poly(2,6-diphenyl) -1,4-)unisine) ether, poly(2,6-simethoxy 1,4-phenylene) nylene) ether, poly(2,6-diethoxy1゜4-phenylene) ether , poly(2-methoxy-6-ethoxy 1,4-phenylene) ether, poly( 2-ethyl-6-styaryloxy-1,4-)unisine) ether, poly(2 , 6-dichloro-1,4-phenylene) ether, poly(2-methyl-6-phenylene) Nyl-1,4-phenylene)ether, poly(2,6-dibenzyl-1,4-) unilene) ether, poly(2-ethoxy-1,4-phenylene) ether, poly(2-chloro-1,4-)unilene)ether, poly(2,6-dipromo 1 ,4-)unilene)ether, poly(3-bromo-2,6-cymethyl-1,4- ) unilene) ethers, their copolymers and their mixtures, etc. is not limited to these. Particularly preferred for use in compositions of the invention As a polyphenylene ether polymer, poly(2,6-cymethyl-1,4 -phenylene) ether, poly(2,3゜6-drimethyl-1,4-phenylene) ) ethers, blends of these polymers, and 2,3,6-drimethyl-1 ．． 4-phenylene ether unit and 2,6-dimethyl-1゜4-phenylene ether There are copolymers containing molecule units.

Examples of such polymers and copolymers are also described in U.S. Pat. No. 4,806,297. It is listed.

Polyetherimidosiloxane copolymer included in the blend composition of the present invention is the following formula and the following equation It is preferable to contain repeating units of. However, T is 10- or the formula -0-2- 0- residue, and its -〇- or 10-2-0- group has a divalent bond of 3. 3’ , 3. 4', 4°3' or 4,4' position, 2 consists of: is a divalent group selected from the group consisting of:

Here, X is selected from the group consisting of divalent groups of the following formula: (where y is an integer from 1 to about 5), and p is 0 or 1. Also, n and m is independently an integer from 1 to about 10, and g is an integer from 1 to about 40. R is an aromatic hydrocarbon group having a C1 atom and its halogenated derivative (b) an alkylene group having from 2 to about 20 carbon atoms; (c) from 3 to about 20 carbon atoms; a cycloalkylene group having carbon atoms, and (d) a divalent group of the following general formula: A divalent organic group selected from the group consisting of:

Here, Q is X is an integer from 1 to about 5.

In a preferred embodiment of formula (I), each R is a methyl group and each nJm is 3. Ru. Suitable polyetherimide-siloxane copolymers and methods of making them are (CellJ) et al. U.S. Patent Nos. 4,690,997 and 4,808.6 No. 86 and co-pending application filed on August 3, 1990. ) Application No. 071563.750 (the disclosures of which are incorporated herein by reference) (herein incorporated by reference).

Polyetherimide-siloxane copolymer contained in the blend composition of the present invention is determined using methods well known in the industry, such as the following formula: aromatic bis(ether anhydride) and at least one of the formula and an organic diamine terminated with at least one amine of the formula It can be produced by reaction with nosiloxane. However, n, m, gST .

R and R1 are as described above.

The polyetherimide-siloxane contained in the blend composition of the present invention is The aromatic bis(ether anhydride), at least one organic diamine, and and at least one amine-terminated organosiloxane. Suitable bis(ether anhydrides) include, but are not limited to: Never.

1.3-bis(2,3-dicarboxyphenoxy)benzene anhydride, 1.4-bis(2,3-dicarboxyphenoxy)benzene anhydride, 1.3-bis(3,4-dicarboxyphenoxy)benzene anhydride, 1.4-bis(3,4-dicarboxyphenoxy)benzene anhydride, 4.4'-bis(phthalic anhydride) ether, 2.2-bisC4-(3,4- dicarboxyphenoxy)phenyl]propanihydride, 4.4'-bis(3,4-dicarboxyphenoxy)diphenylether dianhydride thing, 4.4'-bis(3,4-dicarboxyphenoxy)diphenylsulfide free water, 4.4'-bis(3,4-dicarboxyphenoxy)penzophenone dianhydride, 4.4'-bis(3,4-dicarboxyphenoxy)diphenylsulfone dianhydride thing, 2.2-bis([4-2,3-dicarboxyphenoxy)phenyl]propanni anhydride, 4.4'-bis(2,3-dicarboxyphenoxy)diphenyl ether anhydride thing, 4.4'-bis(2,3-dicarboxyphenoxy)diphenyl sulfide free water, 4.4'-bis(2,3-dicarboxyphenoxy)penzophenone dianhydride, 4.4'-bis(2,3-dicarboxyphenoxy)diphenylsulfone dianhydride thing, 4-(2,3-dicarboxyphenoxy)-4'-(3゜4-dicarboxyphenoxy) enoxy)diphenyl-2,2-propanihydride, 4-(2,3-dicarboxyphenoxy)-4'-(3゜4-dicarboxy phenoxy) diphenyl ether dianhydride, 4-(2,3-dicarboxyphenoxy')-4'-(3゜4-dicarboxy phenoxy) diphenyl sulfide dianhydride, 4-(2,3-dicarboxyphenoxy)-4'-(3゜4-dicarboxy phenoxy) penzophenone dianhydride, 4-(2,3-dicarboxyphenoxy) C’)-4’-(3゜4-dicarboxyphenoxy)diphenylsulfone aqueous foods, and mixtures thereof.

Some of these aromatic bis(ether anhydrides) are described by Heath et al. No. 3,972.902. stated in the patent Bis(ether anhydride) in the presence of a polar aprotic solvent, as shown in Reaction between nitro-substituted phenyldinitriles and metal salts of dihydric phenol compounds It can be produced by hydrolysis of the reaction product followed by dehydration. similar Different fragrances that are suitable for producing polyetherimidosiloxane copolymers The group bis(ether anhydride) was discovered by Codon et al. [Soviet Academy of Sciences, Hetero Organic Compound Research Institute (Insli!ule of Hete+oo+gan ic Compounds, Academ7 of 5 sciences, U , S, S, R, )], USSR Patent No. 257,0 dated November 11, 1969 No. 10, and the codons (ni olu + l etc. make organicization letters (2h, O "g, Khin, Vol. 4(5), p. 774 (1968).

Organic diaphragms suitable for use in the production of polyetherimidosiloxane copolymers Mins include, but are not limited to, the following:

m-fuynylenediamine, p-fuynylenediamine, 4.4'-diaminodiphenylpropane, 4.4'-diaminodiphenylmethane tan (commonly named 4.4'-methylene dianiline), 4.4'-diaminodiphenyl sulfide, 4.4'-diaminodiphenyl sulfone, 4,4'-diaminodiphenyl ether (generally 4,4'-oxydiphenyl ether) (named aniline), 1.5-diaminonaphthalene, 3.3-dimethylbenzidine, 3.3-dimethoxybenzidine, 2.4-Bis(β-amino-t-butyl)toluene, bis(p-β-amino-t -butylphenyl)ether, bis(p-β-methyl-〇-aminophenyl)base 1,3-diamino-4-isopropylbenzene, 1,2-bis(3-albenzene) minopropoxy)ethane, bezidine, m-xylylenediamine, 2.4-diaminotoluene, 2.6-diaminotoluene, Bis(4-aminocyclohexyl)methane, 3-methylhbutamethylenediamine , 4.4-dimethylhebutamethylenediamine, 2.11-dodecanediamine, 2.2-dimethylpropylenediamine, octamethylenediamine, 3-methoxyhexamethylenediamine, 2,5-dimethylhexamethylenediamine 2,5-dimethylhbutamethylene diamine, 3-methylhbutamethylene diamine Min, 5-methylnonamethylenediamine, 1.4-cyclohexanediamine, 1.12-octadecanediamine, Bis(3-aminopropyl) sulfide, N-methyl-bis(3-aminopropyl) ) amine, hexamethylene diamine, heptamethylenediamine, nonamethylene diamine, decamethylene diamine, and mixtures of such diamines.

Preferred suitable for use in the production of polyetherimidosiloxane copolymers An amine-terminated organosiloxane is one in which n and m are each independently 1 or g ranges from about 5 to about 25. especially Preferred amine-terminated organosiloxanes have n and m each of 3. and has a molecular weight distribution such that g has an average value ranging from about 9 to about 20. It is.

These two amine compounds, i.e., organic diamines and amine-terminated The organosiloxane is physically mixed before reacting with the bis(ether anhydride). and can form substantially random copolymers.

Also, as is well known in the polymer industry, prepolymers can be formed. block copolymers or alternating copolymers by sequential addition of reactants. Polymers can also be formed.

The amine-derived component of the polyetherimidosiloxane copolymer is generally Approximately 20 to 50 mol% of amine-terminated organosiloxane and organic diamide It contains about 50 to 80 mol% of In preferred copolymers, this amine The derived component contains about 25 to about 40 amine-terminated organosiloxanes. mol %, most preferably about 35 mol %.

Polyetherimidosiloxane copolymer included in the blend composition of the present invention may further contain a repeating unit of the following formula.

where R1 is as defined above and M is selected from the group consisting of: selected.

1 ma However, B is -S- or 10-.

Polyphenylene ether resin or mixture of polyphenylene ether resins, poly Etherimidosiloxane copolymer, and pentaerythritol tetraben The blend composition of the present invention comprising a zoate is a polyetherimide siloxane. Preferably, the polymer is included in an amount sufficient to improve the flame retardant properties of the blend composition. Yes. Additionally, the present blend composition contains pentaerythritol tetrabenzoate. preferably in an amount sufficient to reduce the melt viscosity of the blend composition. . In a preferred embodiment, the composition has a molecular weight of about 50 to about 9, based on the three ingredients. 5% by weight polyphenylene ether resin, about 0.1 to about 25% by weight polyether limidosiloxane copolymer, and from about 1 to about 25% by weight pentaerythritol. Contains tetrabenzoate.

The composition comprises from about 75 to about 95% by weight polyphenylene ether resin or blends thereof. 1 to about 10% by weight polyetherimidosiloxane copolymer, and about More preferably, it contains 5 to about 15% by weight of pentaerythritol tetrabenzoate. Delicious.

The blend composition of one preferred embodiment of the present invention has an impact-modifying rubber incorporated therein. Contains gum compounds. Various synthetic and natural rubber materials known in the industry are incorporated into the composition. can be included. Impact modifiers preferred for use in compositions according to the invention rubber compounds for vinyl aromatic hydrocarbons and alkenes or later hydrogenated It consists of a block copolymer of diene hydrocarbons. Generally these blocks The copolymer can be represented by the formula ABA. Here, the terminal block A is the same Thermoplastic homogeneous materials prepared from vinyl aromatic compounds, which may be the same or different. Polymer or copolymer. Examples of vinyl aromatic compounds include styrene , α-methylstyrene, vinyltoluene, vinylxylene, ethylvinylxylene and mixtures thereof, including but not limited to Never. Central block B is an alkene hydrocarbon such as ethylene or butylene, Elastomeric polymers derived from conjugated dienes or mixtures thereof Consisting of

This block copolymer can be made into a copolymer by subjecting it to a hydrogenation process. Preferably, the unsaturated rubber block portion B is hydrogenated. Hydrogenation is normal hydrogenation It can be carried out using a catalyst and reaction conditions. This hydrogenated block copo In remers, the average molecular weight of end block A ranges from about 4°000 to about 115,000. and the average molecular weight of central block B can be from about 20,000 to about 450,00 It is up to 0. Jones, U.S. Pat. No. 3,431°323 and and DeLxMi+e et al., U.S. Pat. No. 3,670.054 (Izu (all of which are hereby incorporated by reference). . Particularly preferred block copolymers for use in the present invention are hydrogenated steel Ren-butadiene-styrene (styrene-ethylene-butylene-styrene) bro block copolymers and hydrogenated styrene-isoprene-styrene block copolymers. Made of polymer.

The blend composition of the present invention may be used as an impact-modifying compound, such as those described above. If the composition contains a block copolymer, the composition is based on these four components. about 50 to about 95% by weight polyphenylene ether resin, about 0.1 to about 10% by weight % polyetherimidosiloxane copolymer, from about 1 to about 25% by weight penta Erythritol tetrabenzoate and from about 1 to about 40% by weight block copo Preferably, it includes a reamer. The blend composition also includes about 75 to about 95% by weight of Polyphenylene ether resin, about 0.5 to about 5% by weight polyetherimide silica Xane copolymer, from about 5 to about 15% by weight pentaerythritol tetrabenzoe and more preferably from about 1 to about 20% by weight block copolymer. .

Blend compositions of the present invention can be made using various blending techniques known in the industry.

In a preferred embodiment, the blend is melt extruded into a form suitable for further processing. such as molding by means known in the art for solid thermoplastic compositions. into pellets suitable for

Blend compositions of the present invention may further include one or more additional thermoplastic polymer components. and/or one or more conventional additives, such as but not limited to , stabilizers, lubricants, antioxidants, colorants, fillers, plasticizers, antistatic agents, additional Impact modifiers, etc. may also be included as are well known in the art.

Blend compositions of the present invention are further illustrated in the following examples. Unless otherwise specified, The parts and percentages used in the examples below are by weight.

Example 1 In this example, compositions A-D were prepared according to the invention.

In particular, composition A has an intrinsic viscosity of 0.40 dl/g in chloroform at 25°C. polyphenylene ether resin (PPE), polyether imido siloxane Copolymer (P/S copolymer), and Versicol (Vertical) From Benxollex (registered trademark) S552 Pentaerythritol tetrabenzoate (PETB), which is supplied under the product name Contained. The polyetherimide siloxane of this material is polyetherimide and It is a copolymer with polydimethylsiloxane functionalized with γ-aminopropyl. It was. Compositions B-D further include a cream supplied by Shell. Styrene-ethylene consisting of K+aton (registered trademark) G1651 A butylene-styrene block copolymer was also included. Each of these compositions Table 1 shows the parts by weight of the components contained in. 30mm Warner Freiderer (W e+ne+-Pfleide+er) at about 600°F with a two-screw extruder. extruding the blend composition using a set temperature and a vacuum of 10 to 20 inches Hg; Using a set temperature of approximately 600°F and a mold temperature of approximately 200°F, a 4 oz. It was molded using a Berry (Newbn+y) injection molding machine.

All of Compositions A-D were prepared according to Underwriters Laboratories Standard Method 94 ( UnderwIite “s Lxbor@torics Bullelin 9 4 P+ocedue+) (UL 94). especially Measure the average out-of-flame time (FOT) and longest FOT (in seconds), and determine the UL94 rating. I met. 1i8 inch sample (1i8 inch x 1/2 inch x 2.5 inch) and 1i16 inch sample (1i16 inch x 1/2 inch x 5 inch) Both were evaluated. Also, the capillary at 600 °F, 3.000 s-1 of the sample Melt viscosity was also evaluated.

In addition, notched isot impact according to ASTM-D256 for composition samples. (Using a sample with a size of 8 inches x 1/2 inch x 2.5 inches) , Dynatap (D7+111111++ (auto) according to ASTM=D3763 Energy required to break the falling spear) Strength (1i8 inch x 4 inch disc ), and tensile yield strength and tensile elongation at break according to ASTM-D638. It was measured. The results of these measurements are also shown in Table ■.

PPE (pbv) 90 90 90 90P/S -y polymer - (pbvl 2 2 2 2 PETB (pbvl 10 10 10 IQSEBS bu O- /ri (pbvl 4 7.5 8UL94 grade 1/8' specimen FOT (seconds) Average 1.4 January 1.5 1.5 Longest 3 3 3 4 Grade V-OV-OV-OV-0 1i16’ specimen FOT (seconds) Average 2.2 2.6 2.1 1.9 Longest 6 5 6 5 Grade V-Q V-OV-OV-0 Melt viscosity (poise) 6000F, 3000 seconds-' 9711 1150 11101070 Izotsu shock ff-1t/in Room temperature 0.6 3.8 6.27.1i-20°F 2.0-4.2 Guina tap! t-+b Room temperature 3 38 43 36 -20°F 9-21 tensile properties Yield strength p customer i 12180 10610 9730 9430 Elongation % 23 16 26 20 The results shown in Table I show that compositions A-D of the present invention have good flame retardancy and reduced melt viscosity. It has been proven that the Also, when comparing compositions B-D and composition A, it is shown that As described above, block copolymers can improve impact strength without compromising the flame retardant properties of the composition. has been significantly improved.

Comparative example 1 In this example, a polyphenylene ether resin, such as that used in compositions A-D, Polyetherimidosiloxane copolymer and styrene-ethylene-butylene - A comparative composition E-G consisting of a styrene block copolymer was prepared.

However, comparative compositions E-G contained pentaerythritol contained in compositions A-D. No tetrabenzoate was included. Following the general procedure described in Example 1, Extrusion melt temperature ranging from 653-668°F, vacuum at finch Hg, 652-6 Comparative compositions using melt injection temperatures in the range of 62°F and mold temperatures of 200°F. Product E-G was extruded and molded. In addition, according to the method described in Example 1, a comparative composition Samples of materials E to G were subjected to flammability tests, as well as melt viscosity, isot impact, Guina Tap (D7nzjap) strength and tensile properties were measured. comparative composition The parts by weight of the components included in E-G and the results of these tests and measurements are shown in Table IA. .

PPE (pbv) 93 90. 5 88P/S copolymer pbv 2 2 2 SEBS block (pbw) 5 7. 5 10UL94 grade 1/8' specimen FOT (seconds) Average 2.2 2.1 2.8 Longest 5 3 7 Equal grade v-o v-o v-.

1/16' specimen FOT (seconds) Average 1.7 2.4 2.2 Longest 4 4 4 Equal grade v-o v-o v-.

Melt viscosity (voids) 600°F, 3000 seconds 2030 1950 1870 Izot impact ft-1b/in Room temperature 2.6 6.1 7.1 -20°F 1.5 2.0 3.6 Guinatap 1l-1b Room temperature 37 40 35 -20°F 16 26 31 tensile properties Yield strength psi 10080 9570 9 L 60 Elongation % 36 44 31 As evidenced by comparing the results shown in Table 1 and Table IA, the compositions of the present invention It exhibits improved melt viscosity while retaining good flame retardant properties.

The above examples are given to illustrate specific specific examples of the present invention, and the present invention It is not intended to limit the scope of the compositions and methods. The scope of the invention as described in the claims Other embodiments and advantages within the scope will be apparent to those skilled in the art.

International search report. rT/IIc　O,/I’ll+8DrT/IKQF/nN’ 16 Continuation of front page I

Claims (1)

[Claims] (1) (a) Polyphenylene ether resin, (b) polyether imido siloxane copolymer, and (c) A blend composition comprising pentaerythritol tetrabenzoate. (2) The polyetherimidosiloxane copolymer has flame retardant properties in the blend composition. The blend composition of claim 1, wherein the blend composition is present in an amount sufficient to improve the . (3) Pentaerythritol tetrabenzoate has a melt viscosity of the blend composition. The blend composition of claim 1, wherein the blend composition is present in an amount sufficient to reduce the thing. (4) (a) about 50 to about 95% by weight polyphenylene ether resin; (b) about 0.1 to about 25% by weight polyetherimidosiloxane copolymer; call (c) about 1 to about 25% by weight pentaerythritol tetrabenzoate; A blend composition according to claim 1, comprising: (5) (a) about 75 to about 95% by weight polyphenylene ether resin; (b) about 1 to about 10% by weight polyetherimidosiloxane copolymer; and (c) about 5 to about 15% by weight pentaerythritol tetrabenzoate; 5. The blend composition of claim 4, comprising: (6) Polyphenylene ether resin is poly(2,6-dimethyl-1,4-phenylene ether) nylene) ether, poly(2,3,6-trimethyl-1,4-phenylene) ether ter, 2,6-dimethyl-1,4-phenylene ether unit and 2,3,6-t copolymers containing units of trimethyl-1,4-phenylene ether, and (2,6-dimethyl-1,4-phenylene)ether and poly(2,3,6-tri- selected from the group consisting of blends of methyl-1,4-phenylene) ethers; The blend composition according to claim 1, which is a blend composition according to claim 1. (7) The polyetherimidosiloxane copolymer has the formula (I) ▲ mathematical formula, chemical formula, There are tables, etc. ▼ and formulas (II) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ [In the formula, T is -O- or the formula -O- group Z-O- {where the divalent bond of -O- or -O-Z-O group is 3, 3', 3 , 4', 4,3' or 4,4' position, and Z is ▲ where there are mathematical formulas, chemical formulas, tables, etc. ▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼,▲There are mathematical formulas, chemical formulas, tables, etc. There are mathematical formulas, chemical formulas, tables, etc.▼ ▲There are mathematical formulas, chemical formulas, tables, etc.▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼,▲Numbers There are formulas, chemical formulas, tables, etc.▼, ▲Contains mathematical formulas, chemical formulas, tables, etc.▼ and ▲Mathematical formulas, chemical formulas, tables, etc.▼ (where X is a formula ▲There are mathematical formulas, chemical formulas, tables, etc.▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼, -O - and -S- (y is an integer from 1 to about 5). p is 0 or 1). is a valent group}, n and m are independently integers from 1 to about 10, g is an integer from 1 to about 40, and R is a C1 to C14 monovalent hydrocarbon group or is a substituted C1-C14 monovalent hydrocarbon group, and R1 is (a) 6 to about 20 aromatic hydrocarbon radicals and their halogenated derivatives having 5 carbon atoms, ( b) alkylene groups having from 2 to about 20 carbon atoms, from 3 to about 20 carbon atoms; a cycloalkylene group having, and (c) general formula ▲Contains mathematical formulas, chemical formulas, tables, etc.▼ {In the formula, Q is -S-, -O-, ▲There are mathematical formulas, chemical formulas, tables, etc.▼,▲There are mathematical formulas, chemical formulas, tables, etc. In the group consisting of ▼ and -CxH2x- (x is an integer from 1 to about 5) a divalent group selected from the group consisting of divalent groups } The blend composition according to claim 1, containing repeating units of thing. (8) The blend set according to claim 7, wherein R in formula (I) is a methyl group. A product. (9) The blend composition according to claim 8, wherein n and m are each 3. (10) The polyetherimidosiloxane copolymer further has the formula ▲Contains mathematical formulas, chemical formulas, tables, etc.▼ [In the formula, R1 is as defined above, and M is a ▲ mathematical formula, chemical formula, table, etc. ▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼and▲There are mathematical formulas, chemical formulas, tables, etc. S▼ (Here, B is -S- or ▲There are mathematical formulas, chemical formulas, tables, etc.▼) The claim also contains repeating units selected from the group consisting of: 7. The blend composition according to 7. (11) Additionally, (d) vinyl aromatic hydrocarbons and alkenes or subsequently hydrogenated Claim 1 also includes a block copolymer of a diene hydrocarbon. Blend compositions. (12) The block copolymer is sufficient to improve the impact strength of the blend composition. 12. The blend composition of claim 11, wherein the blend composition is comprised in an amount of (13) (a) about 50 to about 95% by weight polyphenylene ether resin; (b) about 0.1 to about 10% by weight polyetherimidosiloxane copolymer; (c) about 1 to about 25% by weight pentaerythritol tetrabenzoate; and (d) comprising about 1 to about 40% by weight block copolymer. Blend compositions. (14) (a) about 75 to about 95% by weight polyphenylene ether resin; (b) about 0.5 to about 5% by weight polyetherimidosiloxane copolymer; (c) about 5 to about 15% by weight pentaerythritol tetrabenzoate; and (d) comprising about 1 to about 20% by weight block copolymer. Blend compositions. (15) Hydrogenated styrene-butadiene-styrene block copolymer 12. The blend composition of claim 11 comprising a rock copolymer. (16) Hydrogenated styrene-isoprene-styrene block copolymer 12. The blend composition of claim 11 consisting of a rock copolymer. (17) Additionally, stabilizers, lubricants, antioxidants, colorants, fillers, plasticizers and It also contains at least one additive selected from the group consisting of antistatic agents. , the blend composition of claim 1.