Patent US4525508A successfully refreshed from Google Patents.
US4525508A
Expired / Lapsed
US
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Plasticized reinforced compositions of a polyphenylene ether resin
Assignee: General Electric Co
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Filing: 1983-05-12
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Granted: 1985-06-25
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Expires: 2003-05-12
Abstract
Abstract There are provided plasticized thermoplastic compositions useful for molding which comprise a polyphenylene ether resin, a plasticizer, a mineral reinforcing agent, e.g., aluminum silicate, titanium dioxide, zinc oxide, antimony oxide, and the like, and optionally, an impact modifier. The compositions possess improved stiffness properties with unexpectedly significant retention of ductility in comparison with corresponding compositions which do not contain the mineral reinforcing agent.
Inventors
- 👤 Gim F. Lee, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:22
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08K; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
117 words
A reinforced, plasticized thermoplastic composition comprising: (a) a polyphenylene ether resin; (b) a plasticizer therefor in an amount at least sufficient to reduce the temperature of optimum extrusion at least about 25° F., said amount being at least about 15 parts per hundred parts by weight of said resin; and (c) a mineral reinforcing agent selected from the group consisting of aluminum silicate (clay), talc, zinc oxide, titanium dioxide, barium sulfate, calcium carbonate, and antimony oxide, said agent being present in an amount at least sufficient to provide enhanced stiffness in comparision with a corresponding composition not containing said mineral reinforcing agent, said amount be at least about 20 parts per hundred parts by weight of resin.
Claim 2
Dependent Claim
117 words
A reinforced, plasticized thermoplastic composition comprising: (a) a polyphenylene ether resin; (b) a plasticizer therefor in an amount at least sufficient to reduce the temperature of optimum extrusion at least about 25° F., said amount being at least about 15 parts per hundred parts by weight of said resin; and (c) a mineral reinforcing agent selected from the group consisting of aluminum silicate (clay), talc, zinc oxide, titanium dioxide, barium sulfate, calcium carbonate, and antimony oxide, said agent being present in an amount at least sufficient to provide enhanced stiffness in comparision with a corresponding composition not containing said mineral reinforcing agent, said amount be at least about 20 parts per hundred parts by weight of resin.
Claim 3
Dependent Claim
32 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is present in an amount of from about 15 to about 150 parts per hundred parts of resin plus plasticizer.
Claim 4
Dependent Claim
16 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is an aluminum silicate.
Claim 5
Dependent Claim
17 words
A composition as defined in claim 3 wherein said mineral reinforcing agent is a hydrated aluminum silicate.
Claim 6
Dependent Claim
108 words
A composition as defined in claim 1 wherein the polyphenylene ether resin (a) comprises repeating structural units of the formula: ##STR3## wherein the oxygen ether atom of one unit is connected to the benzene nucleus of the next adjoining unit, n is a positive integer and is at least 50, and each Q is a monovalent substituent selected from the group consisting of hydrogen, halogen, hydrocarbon radicals free of a tertiary alpha-carbon atom, halohydrocarbon radicals having at least two carbon atoms between the halogen atom and the phenyl nucleus, hydrocarbonoxy radicals and halohydrocarbonoxy radicals having at least two carbon atoms between the halogen atom and the phenyl nucleus.
Claim 7
Dependent Claim
24 words
A composition as defined in claim 5 wherein in said polyphenylene ether resin each Q is alkyl having from 1 to 4 carbon atoms.
Claim 8
Dependent Claim
15 words
A composition as defined in claim 5 wherein said polyphenylene ether resin is poly(2,6-dimethyl-1,4-phenylene) ether.
Claim 9
Dependent Claim
12 words
A composition as defined in claim 1 which includes an impact modifier.
Claim 10
Dependent Claim
18 words
A composition as defined in claim 8 wherein the impact modifier is an elastomeric A-B-A 1 block copolymer.
Claim 11
Dependent Claim
19 words
A composition as defined in claim 9 wherein the impact modifier is a block copolymer of styrene and butadiene.
Claim 12
Dependent Claim
19 words
A composition as defined in claim 9 wherein the impact modifier is a block copolymer of styrene and isoprene.
Claim 13
Dependent Claim
18 words
A composition as defined in claim 8 wherein the impact modifier is an hydrogenated A-B-A 1 block copolymer.
Claim 14
Dependent Claim
20 words
A composition as defined in claim 12 wherein the impact modifier is an hydrogenated block copolymer of styrene and butadiene.
Claim 15
Dependent Claim
20 words
A composition as defined in claim 13 wherein the impact modifier is an hydrogenated block copolymer of styrene and isoprene.
Claim 16
Dependent Claim
28 words
A composition as defined in claim 8 wherein the impact modifier is a radical teleblock copolymer of a vinyl aromatic compound, a conjugated diene and a coupling agent.
Claim 17
Dependent Claim
20 words
A composition as defined in claim 8 wherein the impact modifier is an acrylic resin modified diene rubber containing resin.
Claim 18
Dependent Claim
62 words
A composition as defined in claim 16 wherein said acrylic resin modified diene rubber-containing resin is selected from the group consisting of a resinous composition consisting essentially of a poly(alkyl methacrylate) grafted onto a butadiene-styrene backbone or an acrylonitrile-butadiene-styrene backbone or a resinous composition consisting essentially of a mixture of a poly(alkyl methacrylate) and a butadiene styrene copolymer or an acrylonitrile-butadiene-styrene terpolymer.
Claim 19
Dependent Claim
24 words
A composition as defined in claim 8 wherein the impact modifier is a graft copolymer of a vinyl aromatic compound and a diene compound.
Claim 20
Dependent Claim
19 words
A composition as defined in claim 18 wherein the impact modifier is a graft copolymer of styrene and styrenebutadiene.
Claim 21
Dependent Claim
58 words
A composition as defined in claim 1 wherein the plasticizer (b) is a compound of the formula: ##STR4## wherein R 1 , R 2 and R 3 are the same or different and are alkyl, haloalkyl, cycloalkyl, halocycloalkyl, aryl, haloaryl, alkyl substituted aryl, haloalkyl substituted aryl, aryl substituted alkyl, haloaryl substituted alkyl, hydroxyalkyl, hydroxyaryl, hydroxyalkaryl, halogen and hydrogen.
Claim 22
Dependent Claim
16 words
A composition as defined in claim 20 wherein said plasticizer (b) is an aromatic phosphate plasticizer.
Claim 23
Dependent Claim
14 words
A composition as defined in claim 21 wherein said aromatic phosphate is triphenyl phosphate.
Claim 24
Dependent Claim
18 words
A composition as defined in claim 1 which includes a flame retardant amount of a flame retardant agent.
Claim 25
Dependent Claim
25 words
A composition as defined in claim 1 in which the plasticizer (b) is a flame retardant agent and is present in a flame retardant amount.
Claim 26
Dependent Claim
17 words
A composition as defined in claim 1 in which the mineral reinforcing agent is anhydrous aluminum silicate.
Claim 27
Dependent Claim
14 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is talc.
Claim 28
Dependent Claim
15 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is zinc oxide.
Claim 29
Dependent Claim
15 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is titanium dioxide.
Claim 30
Dependent Claim
15 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is antimony oxide.
Claim 31
Dependent Claim
15 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is barium sulfate.
Claim 32
Dependent Claim
15 words
A composition as defined in claim 1 wherein the mineral reinforcing agent is calcium carbonate.
Claim 33
Dependent Claim
109 words
A reinforced, plasticized thermoplastic composition having enhanced stiffness, comprising (a) a polyphenylene ether resin; (b) a plasticizer selected from the group consisting of mineral oils and aromatic phosphates, present in an amount sufficient to reduce the temperature of optimum extrusion at least about 25° F., said amount being at least about 15 parts per hundred parts by weight of said resin; and (c) a mineral reinforcing agent selected from the group consisting of aluminum silicate (clay), talc, zinc oxide, titanium dioxide, antimony oxide, barium sulfate, and calcium carbonate, said mineral reinforcing agent being in an amount of at least about 20 parts per hundred parts by weight of resin.
Claim 34
Dependent Claim
109 words
A reinforced, plasticized thermoplastic composition having enhanced stiffness, comprising (a) a polyphenylene ether resin; (b) a plasticizer selected from the group consisting of mineral oils and aromatic phosphates, present in an amount sufficient to reduce the temperature of optimum extrusion at least about 25° F., said amount being at least about 15 parts per hundred parts by weight of said resin; and (c) a mineral reinforcing agent selected from the group consisting of aluminum silicate (clay), talc, zinc oxide, titanium dioxide, antimony oxide, barium sulfate, and calcium carbonate, said mineral reinforcing agent being in an amount of at least about 20 parts per hundred parts by weight of resin.
Claim 35
Dependent Claim
11 words
A composition according to claim 32, which includes an impact modifier.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |