EP0352486A2
Expired / Lapsed
EP
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Solventresistant, compatible blends of polyphenylene ethers and polyesters
Assignee: General Electric Co
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Filing: 1989-06-26
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Granted: —
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Expires: 2009-06-26
Abstract
Abstract Solvent-resistant resin blends with a wide variety of desirable impact and tensile properties are prepared from a polyphenylene ether having a low proportion of unneutralized amino nitrogen or a blend thereof with a polystyrene; an elastomeric polyester or a mixture thereof with a poly-(ethylene terephthalate) or poly(butylene terephthalate); and at least one elastomeric polyphenylene ether-compatible impact modifier. There may also be present a minor amount of at least one polyepoxide such as triglycidyl isocyanurate.
Inventors
- 👤 Sterling Bruce Brown
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 01:17
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126; C08L63/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
150 words
A resinous composition free from polycarbonates and comprising the following resinous components and any reaction products thereof, all percentage proportions being by weight of total resinous components: (A) about 30-55% of at least one polyphenylene ether containing at most 800 ppm. of unneutralized amino nitrogen, or a blend thereof with at least one polystyrene; (B) about 30-55% of (B-1) at least one polyester consisting essentially of structural units of the formulas (I) -O-R¹-O- -A¹- - and wherein R¹ is a saturated C₂₋₁₀ divalent aliphatic or alicyclic hydrocarbon radical and A¹ is a divalent aromatic radical containing about 6-20 carbon atoms, R² is a saturated C₂₋₄ divalent aliphatic hydrocarbon radical and x has an average value of at least about 10; or a mixture thereof with (B-2) at least one polyester consisting essentially of units of formula I; and (C) about 8-20% of at least one elastomeric polyphenylene ether-compatible impact modifier.
Claim 2
Dependent Claim
150 words
A resinous composition free from polycarbonates and comprising the following resinous components and any reaction products thereof, all percentage proportions being by weight of total resinous components: (A) about 30-55% of at least one polyphenylene ether containing at most 800 ppm. of unneutralized amino nitrogen, or a blend thereof with at least one polystyrene; (B) about 30-55% of (B-1) at least one polyester consisting essentially of structural units of the formulas (I) -O-R¹-O- -A¹- - and wherein R¹ is a saturated C₂₋₁₀ divalent aliphatic or alicyclic hydrocarbon radical and A¹ is a divalent aromatic radical containing about 6-20 carbon atoms, R² is a saturated C₂₋₄ divalent aliphatic hydrocarbon radical and x has an average value of at least about 10; or a mixture thereof with (B-2) at least one polyester consisting essentially of units of formula I; and (C) about 8-20% of at least one elastomeric polyphenylene ether-compatible impact modifier.
Claim 3
Dependent Claim
75 words
A composition according to claim 1 wherein the polyphenylene ether comprises a plurality of structural units having the formula and in each of said units independently, each Q¹ is independently halogen, primary or secondary lower alkyl, phenyl, haloalkyl, aminoalkyl, hydrocarbonoxy, or halohydrocarbonoxy wherein at least two carbon atoms separate the halogen and oxygen atoms; and each Q² is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q¹.
Claim 4
Dependent Claim
13 words
A composition according to claim 2 wherein component A is a poly(2,6-dimethyl-1,4-phenylene ether).
Claim 5
Dependent Claim
20 words
A composition according to claim 3 wherein the weight ratio of component to component B is at most about 1.8:1.
Claim 6
Dependent Claim
24 words
A composition according to claim 4 wherein component C is a block copolymer of at least one alkenylaromatic compound and at least one diene.
Claim 7
Dependent Claim
34 words
A composition according to claim 5 wherein component C is a triblock copolymer wherein the end blocks are derived from styrene and the midblock is derived from at least one of isoprene and butadiene.
Claim 8
Dependent Claim
19 words
A composition according to claim 6 wherein the aliphatic unsaturation in the midblock has been removed by selective hydrogenation.
Claim 9
Dependent Claim
24 words
A composition according to claim 5 wherein each of R¹ and R² is tetramethylene and A¹ is m- or p-phenylene or a mixture thereof.
Claim 10
Dependent Claim
10 words
A composition according to claim 8 wherein A¹ is p-phenylene.
Claim 11
Dependent Claim
13 words
A composition according to claim 9 wherein component B consists of component B-1.
Claim 12
Dependent Claim
34 words
A composition according to claim 10 wherein component C is a triblock copolymer wherein the end blocks are derived from styrene and the midblock is derived from at least one of isoprene and butadiene.
Claim 13
Dependent Claim
19 words
A composition according to claim 11 wherein the aliphatic unsaturation in the midblock has been removed by selective hydrogenation.
Claim 14
Dependent Claim
19 words
A composition according to claim 9 wherein component B is a mixture of a poly(butylene terephthalate) with component B-1.
Claim 15
Dependent Claim
34 words
A composition according to claim 13 wherein component C is a triblock copolymer wherein the end blocks are derived from styrene and the midblock is derived from at least one of isoprene and butadiene.
Claim 16
Dependent Claim
19 words
A composition according to claim 14 wherein the aliphatic unsaturation in the midblock has been removed by selective hydrogenation.
Claim 17
Dependent Claim
39 words
A composition according to claim 5 wherein there is also present (D) at least one compound containing a plurality of epoxide moieties, in the amount of about 0.1-3.0 parts per 100 parts of total components A, B and C.
Claim 18
Dependent Claim
12 words
A composition according to claim 16 wherein component D is triglycidyl isocyanurate.
Claim 19
Dependent Claim
34 words
A composition according to claim 17 wherein component C is a triblock copolymer wherein the end blocks are derived from styrene and the midblock is derived from at least one of isoprene and butadiene.
Claim 20
Dependent Claim
19 words
A composition according to claim 18 wherein the aliphatic unsaturation in the midblock has been removed by selective hydrogenation.
References Cited (Backward Citations)
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