EP0338269A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Solvent resistant, compatible blends of polyphenylene ethers and thermoplastic polyester mixtures
Assignee: General Electric Co
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Filing: 1989-03-21
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Granted: —
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Expires: 2009-03-21
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, a mixture of a poly(alkylene dicarboxylate) and a polyarylate, and, optionally, at least one elastomeric polyphenylene ether-compatible impact modifier.
Inventors
- 👤 Sterling Bruce Brown
- 👤 Richard Charles Lowry
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 13:16
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L67/03; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/126
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
145 words
A polycarbonate-free resinous composition comprising the following resinous components and any reaction products thereof, all percentage proportions being by weight of total resinous components: (A) about 30-45% of at least one polyphenylene ether containing at most 800 ppm. of unneutralized amino nitrogen; (B) about 50-65% of a polyester mixture comprising (B-1) about 40-65%, based on total polyester, of a polymer consisting essentially of structural units of the formula and (B-2) about 35-60% of a polymer consisting essentially of structural units of the formula wherein: R 1 is a saturated C2 - 1 divalent aliphatic or alicyclic hydrocarbon radical; each of A', A 2 and A3 is independently a monocyclic divalent aromatic radical; and Y is a bridging radical in which one or two atoms separate A 2 from A3; and (C) from 0% to about 20% of at least one elastomeric polyphenylene ether-compatible impact modifier.
Claim 2
Dependent Claim
145 words
A polycarbonate-free resinous composition comprising the following resinous components and any reaction products thereof, all percentage proportions being by weight of total resinous components: (A) about 30-45% of at least one polyphenylene ether containing at most 800 ppm. of unneutralized amino nitrogen; (B) about 50-65% of a polyester mixture comprising (B-1) about 40-65%, based on total polyester, of a polymer consisting essentially of structural units of the formula and (B-2) about 35-60% of a polymer consisting essentially of structural units of the formula wherein: R 1 is a saturated C2 - 1 divalent aliphatic or alicyclic hydrocarbon radical; each of A', A 2 and A3 is independently a monocyclic divalent aromatic radical; and Y is a bridging radical in which one or two atoms separate A 2 from A3; and (C) from 0% to about 20% of at least one elastomeric polyphenylene ether-compatible impact modifier.
Claim 3
Dependent Claim
78 words
A composition according to claim 1 wherein component A comprises a plurality of structural units having the formula and in each of said units independently, each Q 1 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 Q 2 is independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, haloalkyl, hydrocarbonoxy or halohydrocarbonoxy as defined for Q 1 .
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
21 words
A composition according to claim 3 wherein the weight ratio of component A to component B is at most about 1.2:1.
Claim 6
Dependent Claim
15 words
A composition according to claim 4 wherein component B-1 is poly(ethylene terephthalate) or poly-(butylene terephthalate).
Claim 7
Dependent Claim
18 words
A composition according to claim 5 wherein component B-2 is a bisphenol A isophthalate, terephthalate or mixed isophthalate-terephthalate.
Claim 8
Dependent Claim
25 words
A composition according to claim 6 wherein component B-1 is a poly(butylene terephthalate) having a number average molecular weight in the range of about 20,000-70,000.
Claim 9
Dependent Claim
35 words
A composition according to claim 7 wherein component B-2 has an intrinsic viscosity in the range of about 0.5-1.0 dl./g., as determined at 30°C in a mixture of 60% phenol and 40% 1,1,2,2-tetrachloroethane by weight.
Claim 10
Dependent Claim
24 words
A composition according to claim 5 which contains about 30-40% of component A, about 50-60% of component B and about 10-20% of component C.
Claim 11
Dependent Claim
24 words
A composition according to claim 9 wherein component C is a block copolymer of at least one alkenylaromatic compound and at least one diene.
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
18 words
A composition according to claim 11 wherein component B-2 is a bisphenol A isophthalate, terephthalate or mixed isophthalate-terephthalate.
Claim 14
Dependent Claim
25 words
A composition according to claim 12 wherein component B-1 is a poly(butylene terephthalate) having a number average molecular weight in the range of about 20,000-70,000.
Claim 15
Dependent Claim
36 words
A composition according to claim 13 wherein component B-2 has an intrinsic viscosity in the range of about 0.5-1.0 dl.ig., as determined at 30 C in a mixture of 60% phenol and 40% 1,1,2,2-tetrachloroethane by weight.
Claim 16
Dependent Claim
22 words
A composition according to claim 14 wherein the aliphatic unsaturation in the midblock of component C has been removed by selective hydrogenation.
References Cited (Backward Citations)
No citation records indexed.
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