Patent US2680902A successfully refreshed from Google Patents.
EP0147653A2
Expired / Lapsed
EP
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High impact polyphenylene ether compositions having improved processability
Assignee: GE Chemicals Inc
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Filing: 1984-11-28
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Granted: —
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Expires: 2004-11-28
Abstract
Abstract Polyphenylene ether resins impact modified with a rubbery impact modifier such as an ABA block copolymer or a polyolefin is made more processable by further compounding with a moderate amount of an aromatic polycarbonate. The compositions exhibit markedly high impact strength and high heat distortion temperature characteristics.
Inventors
- 👤 John Carl Falk
- 👤 Ronald L. Jalbert
- 👤 Klementina F. Khait
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 10:47
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44; C08L; C08L69/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
33 words
A thermoplastic resin composition comprising: 100 parts by weight of a blend of a polyphenylene ether and a rubbery impact modifier; and from 5 to 25 parts by weight of an aromatic polycarbonate.
Claim 2
Dependent Claim
33 words
A thermoplastic resin composition comprising: 100 parts by weight of a blend of a polyphenylene ether and a rubbery impact modifier; and from 5 to 25 parts by weight of an aromatic polycarbonate.
Claim 3
Dependent Claim
36 words
The composition of claim 1 wherein said blend of polyphenylene ether and rubbery impact modifier comprises from 98 to 75 wt% of a polyphenylene ether and correspondingly from 2 to 25 wt% of rubbery impact modifier.
Claim 4
Dependent Claim
25 words
The composition of claim 1 wherein said polyphenylene ether is selected from the group consisting of homopolymers of 2,6-dialkylphenols and copolymers of 2,6-dialkylphenols and 2,3,6-trialkylphenols.
Claim 5
Dependent Claim
27 words
The composition of claim 1 wherein the aromatic polycarbonate is selected from the group consisting of carbonate polymers of 2,2-bis(4-hydroxyphenyl)propane, carbonate polymers of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane and copolymers thereof.
Claim 6
Dependent Claim
28 words
The composition of claim 1 wherein the rubbery impact modifier is selected from the group consisting of styrene-butadiene-styrene block copolymers, hydrogenated styrene-butadiene-styrene block copolymers, polyolefins, and mixtures thereof.
Claim 7
Dependent Claim
98 words
A thermoplastic resin composition comprising: (a) 100 parts by weight of a blend consisting of from 98 to 75 wt% of a polyphenylene ether selected from the group consisting of homopolymers of 2,6-dialkylphenols and copolymers of 2,6-dialkylphenols and 2,3,6- trialkylphenols and from 2 to 25 wt% of a rubbery impact modifier selected from the group consisting of styrene-butadiene-styrene block copolymers, hydrogenated styrene-butadiene-styrene block copolymers, polyolefins and mixtures thereof; and (b) from 5 to 25 parts by weight of an aromatic polycarbonate selected from the group consisting of carbonate polymers of 2,2-bis(4-hydroxyphenyl)propane, carbonate polymers of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane and copolymers thereof.
Claim 8
Dependent Claim
98 words
A thermoplastic resin composition comprising: (a) 100 parts by weight of a blend consisting of from 98 to 75 wt% of a polyphenylene ether selected from the group consisting of homopolymers of 2,6-dialkylphenols and copolymers of 2,6-dialkylphenols and 2,3,6- trialkylphenols and from 2 to 25 wt% of a rubbery impact modifier selected from the group consisting of styrene-butadiene-styrene block copolymers, hydrogenated styrene-butadiene-styrene block copolymers, polyolefins and mixtures thereof; and (b) from 5 to 25 parts by weight of an aromatic polycarbonate selected from the group consisting of carbonate polymers of 2,2-bis(4-hydroxyphenyl)propane, carbonate polymers of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane and copolymers thereof.
Claim 9
Dependent Claim
16 words
The composition of claim 6 wherein said rubbery impact modifier is a hydrogenated styrene-butadiene-styrene block copolymer.
Claim 10
Independent Claim
44 words
A method for improving the melt processability of a blend comprising a polyphenylene ether resin and a rubbery impact modifier, said method comprising the step of including from 5 to 20 parts by weight, per hundred parts of said blend, of an aromatic polycarbonate.
Claim 11
Independent Claim
44 words
A method for improving the melt processability of a blend comprising a polyphenylene ether resin and a rubbery impact modifier, said method comprising the step of including from 5 to 20 parts by weight, per hundred parts of said blend, of an aromatic polycarbonate.
Claim 12
Independent Claim
47 words
A method for preparing impact-modified polyphenylene ether resin compositions having improved melt-processability comprising the steps of: first combining a polyphenylene ether resin with an aromatic polycarbonate resin under melt-processing conditions to form a preblend, and thereafter combining said preblend under melt-processing conditions with a rubbery impact modifier.
Claim 13
Independent Claim
47 words
A method for preparing impact-modified polyphenylene ether resin compositions having improved melt-processability comprising the steps of: first combining a polyphenylene ether resin with an aromatic polycarbonate resin under melt-processing conditions to form a preblend, and thereafter combining said preblend under melt-processing conditions with a rubbery impact modifier.
References Cited (Backward Citations)
No citation records indexed.
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