Patent US4299757A successfully refreshed from Google Patents.
US4299757A
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Aromatic polyether resin composition
Assignee: Asahi Kasei Corp
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Filing: 1980-04-25
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Granted: 1981-11-10
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Expires: 2000-04-25
Abstract
Abstract A graft copolymer having a styrene polymer grafted onto a trunk polymer consituted of (a) hydrogenated block copolymer of a styrene compound and a diene compound and (b) an olefinic polymer or copolymer is blended with a polyphenylene ether type resin to give a resin composition reduced in anisotropy and having good oil resistance and mechanical properties.
Inventors
- 👤 Isao Kuribayashi
- 👤 Jurou Ohzeki
- 👤 Kiyoshi Shimamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:58
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06; C08L53/00; C08L53/02; C08L53/025; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
89 words
An aromatic polyether resin composition comprising a continuous resin phase principally composed of an aromatic polyether resin and dispersed phases which are dispersed in said continuous resin phase, wherein said dispersed phases comprise (a) a hydrogenated product of a block copolymer of a vinyl aromatic hydrocarbon and an aliphatic conjugated diene hydrocarbon and (b) at least one polymer selected from the group consisting of poly-olefins, ethylene-vinyl aliphatic acid copolymers and ethylene-unsaturated carboxylic acid ester copolymers, said components (a) and (b) containing (c) an aromatic vinyl compound polymer grafted thereon.
Claim 2
Dependent Claim
89 words
An aromatic polyether resin composition comprising a continuous resin phase principally composed of an aromatic polyether resin and dispersed phases which are dispersed in said continuous resin phase, wherein said dispersed phases comprise (a) a hydrogenated product of a block copolymer of a vinyl aromatic hydrocarbon and an aliphatic conjugated diene hydrocarbon and (b) at least one polymer selected from the group consisting of poly-olefins, ethylene-vinyl aliphatic acid copolymers and ethylene-unsaturated carboxylic acid ester copolymers, said components (a) and (b) containing (c) an aromatic vinyl compound polymer grafted thereon.
Claim 3
Dependent Claim
93 words
A composition according to claim 1, wherein the aromatic polyether resin is a polyphenylene ether represented by the formula: ##STR3## wherein R 1 and R 2 are alkyls having 1 to 4 carbon atoms, excluding tert-butyl, halogen atoms or substituents selected from the group consisting of halogenated hydrocarbon and halogenated hydrocarbonoxy groups having at least two carbon atoms between the benzene nucleus and the halogen atom and containing no tertiary carbon atom; and n is an integer of 50 or more indicating degree of polymerization, or a copolymer principally composed of said structure.
Claim 4
Dependent Claim
119 words
A composition according to claim 1, wherein the aromatic polyether is a polyphenylene ether graft copolymer modified with an aromatic vinyl compound polymer containing substantially no homopolymer of polyphenylene ether, comprising a vinyl aromatic compound polymer grafted onto a polyphenylene ether represented by the formula: ##STR4## wherein R 1 and R 2 are alkyls having 1 to 4 carbon atoms, excluding tert-butyl, halogen atoms or substituents selected from the group consisting of halogenated hydrocarbon and halogenated hydrocarbonoxy groups having at least two carbon atoms between the benzene nucleus and the halogen atom and containing no tertiary carbon atom; and n is an integer of 50 or more indicating degree of polymerization, or a coplymer principally composed of said structure.
Claim 5
Dependent Claim
15 words
A composition according to claim 2 or 3, wherein the polyphenylene ether is poly(2,6-dimethyl-1,4-phenylene) ether.
Claim 6
Dependent Claim
16 words
A composition according to claim 1, wherein the continuous resin phase comprises a styrene type resin.
Claim 7
Dependent Claim
24 words
A composition according to claim 5, wherein the styrene type resin is a vinyl aromatic compound polymer or a rubber-modified vinyl aromatic compound polymer.
Claim 8
Dependent Claim
15 words
A composition according to claim 1, wherein the aromatic vinyl compound polymer (c) is polystyrene.
Claim 9
Dependent Claim
62 words
A composition according to claim 1, wherein the aromatic vinyl compound polymer (c) contains 10 wt.% or less of other comonomers, being selected from the group consisting of styrene-acrylonitrile copolymer, styrene-methyl methacrylate copolymer, styrene-acrylonitrilemethyl methacrylate copolymer, styrene-α-methylstyrene copolymer, styrene-methyl methacrylate-α-methylstyrene copolymer, styrene-acrylonitrile-methyl methacrylate-αmethylstyrene copolymer, styrene-chlorostyrene copolymer, styrene-maleic anhydride copolymer, styrene-acrylic acid copolymer, styrene-methacrylic acid-methyl methacrylate copolymer, and styrene acrylic acid-methyl acrylate copolymer.
Claim 10
Dependent Claim
12 words
A composition according to claim 1, wherein the polymer (b) is polyethylene.
Claim 11
Dependent Claim
14 words
A composition according to claim 1, wherein the polymer (b) is an ethylene-propylene copolymer.
Claim 12
Dependent Claim
15 words
A composition according to claim 1, wherein the polymer (b) is an ethylene-propylene-nonconjugated diene terpolymer.
Claim 13
Dependent Claim
25 words
A composition according to claim 1, wherein the polymer (b) is an ethylene-vinyl acetate copolymer containing not more than 40 mol % of vinyl acetate.
Claim 14
Dependent Claim
25 words
A composition according to claim 1, wherein the polymer (b) is an ethylene-methyl methacrylate copolymer containing not more than 40 mol % of methyl methacrylate.
Claim 15
Dependent Claim
58 words
A composition according to claim 1, wherein the hydrogenated product of the block copolymer (a) is a hydrogenated product of a block copolymer comprising 20 to 45 wt.% of a vinyl aromatic hydrocarbon and 55 to 80 wt.% of an aliphatic conjugated diene compound, the degree of hydrogenation being at least 80% saturation of the aliphatic double bonds.
Claim 16
Dependent Claim
27 words
A composition according to claim 1, wherein the total content of the components (a) and (b) is from 2 to 40 wt.% based on the total composition.
Claim 17
Dependent Claim
20 words
A composition according to claim 15, wherein the dispersed phases amount to 2.1 to 80 wt.% of the total composition.
Claim 18
Dependent Claim
38 words
A composition according to claim 16, wherein the weight percentage of the component (c) to the sum of (a) and (b) is 5 to 100 wt.% and the weight ratio of (a) to (b) is 1/4 to 4/1.
Claim 19
Dependent Claim
18 words
A composition according to claim 17, wherein the weight ratio of (a) to (b) is 1/4 to 1/1.
Claim 20
Dependent Claim
13 words
A composition according to claim 1, further containing an effective amount of stabilizers.
Claim 21
Dependent Claim
13 words
A composition according to claim 1, further containing an effective amount of flame-retardants.
Claim 22
Dependent Claim
20 words
A composition according to claim 1, further containing an effective amount of stabilizers and a reinforcing amount of glass fibers.
Claim 23
Dependent Claim
21 words
A composition according to claim 1, further containing effective amounts of stabilizers and flame-retardants and a reinforcing amount of glass fibers.
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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) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |