US4284733A
Expired / Lapsed
US
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Thermoplastic composition containing a poly(methyl ethenyl benzene) resin and a poly(phenylene oxide) resin
Assignee: ENVIRONMENTAL PROTECTION INTERNATION CORP Ltd
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Filing: 1980-02-08
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Granted: 1981-08-18
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Expires: 2000-02-08
Abstract
Abstract Thermoplastic blends having superior capability and homogeneity comprising a poly(phenylene oxide) resin and a resin of poly(methyl ethenyl benzene) isomers in which the predominant isomer is 1-methyl-4-ethenyl benzene, are disclosed. The poly(phenylene oxide) resin can contain substituted phenylene units and the poly(methyl ethenyl benzene) resin can be a polymer of solely methyl ethenyl benzene isomers, or a random, block or graft copolymer comprising 50 weight percent or more of methyl ethenyl benzene isomers and up to 50 weight percent of other ethylenically unsaturated monomers.
Inventors
- 👤 Robert V. Russo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:24
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/16; C08L51/00; C08L51/04; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
124 words
A polymeric composition comprising homogeneous and compatible blend of about (a) 20 to 80 weight percent poly(methyl ethenyl benzene) resin comprising at least 50 weight percent of polymerized units derived from a mixture of isomers of methyl ethenyl benzene consisting essentially of 0 to 0.1 percent by weight 1-methyl-2-ethenyl benzene, 0 to 15 weight percent, 1-methyl-3-ethenyl benzene, and at least 85 weight percent 1-methyl-4-ethenyl benzene; and (b) 80 to 20 weight percent of a poly(phenylene oxide) resin having the formula ##STR2## wherein each Q independently is hydrogen, a hydrocarbon radical, a halohydrocarbon radical having at least two carbon atoms between the halogen atom and phenyl nucleus, or halogen, provided that each is free of a tertiary carbon atoms; and n is at least 20.
Claim 2
Dependent Claim
124 words
A polymeric composition comprising homogeneous and compatible blend of about (a) 20 to 80 weight percent poly(methyl ethenyl benzene) resin comprising at least 50 weight percent of polymerized units derived from a mixture of isomers of methyl ethenyl benzene consisting essentially of 0 to 0.1 percent by weight 1-methyl-2-ethenyl benzene, 0 to 15 weight percent, 1-methyl-3-ethenyl benzene, and at least 85 weight percent 1-methyl-4-ethenyl benzene; and (b) 80 to 20 weight percent of a poly(phenylene oxide) resin having the formula ##STR2## wherein each Q independently is hydrogen, a hydrocarbon radical, a halohydrocarbon radical having at least two carbon atoms between the halogen atom and phenyl nucleus, or halogen, provided that each is free of a tertiary carbon atoms; and n is at least 20.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said poly(phenylene oxide) resin is poly(2,6-dimethyl-1,4-phenylene oxide).
Claim 4
Dependent Claim
41 words
The composition of claim 1 wherein said poly(methyl ethenyl benzene) resin is derived from a mixture of isomers consisting essentially of at least 90% by weight 1-methyl-4-ethenyl benzene, 1-10% by weight 1-methyl-3-ethenyl benzene, and 0 to 0.1% by weight 1-methyl-2-ethenyl benzene.
Claim 5
Dependent Claim
38 words
The composition of claim 3 wherein said mixture of isomers consists essentially of at least 95 percent by weight 1-methyl-4-ethenyl benzene, 1 to 5 percent by weight 1-methyl-3-ethenyl benzene and 0 to 0.5 percent by weight 1-methyl-2-ethenyl benzene.
Claim 6
Dependent Claim
30 words
The composition of claim 3 wherein said mixture of isomers consists essentially of at least 97 percent by weight 1-methyl-4-ethenyl benzene and 1 to 3 percent by weight 1-methyl-3-ethenyl benzene.
Claim 7
Dependent Claim
12 words
The composition of claim 1 in which n is at least 50.
Claim 8
Dependent Claim
60 words
The composition of claim 1 wherein said poly(methyl ethenyl benzene) resin is a high impact copolymer comprising a backbone polymer chain which is a polymer selected from the group consisting of polybutadiene, a styrenebutadiene rubber, an ethylene-propylene rubber, an ethylene-propylene-diene elastomer, and a nitrile rubber; and polymeric units derived from said polymerizable mixture of methyl ethenyl benzene isomers grafted thereto.
Claim 9
Dependent Claim
22 words
The composition of claim 7 wherein the backbone polymer is 2 to 25 percent by weight of the total high impact polymer.
Claim 10
Dependent Claim
22 words
The composition of claim 7 wherein the backbone polymer is 3 to 15 percent by weight of the total high impact polymer.
Claim 11
Dependent Claim
22 words
The composition of claim 7 wherein the backbone polymer is 5 to 10 percent by weight of the total high impact polymer.
Claim 12
Dependent Claim
31 words
The composition of claim 1 which comprises (a) 40 to 60 weight percent of said poly(methyl ethenyl benzene) resin and (b) 60 to 40 weight percent of said poly(phenylene oxide) resin.
Claim 13
Dependent Claim
86 words
The composition of claim 1 comprising about (a) 20 to 80 weight percent of a high impact copolymer comprising 5 to 10 weight percent of a polybutadiene backbone and grafted thereto polymeric units derived from a polymerizable mixture of isomers of methyl ethylene benzene consisting essentially of 0 to 0.05 weight percent 1-methyl-2-ethenyl benzene, 1 to 5 weight percent 1-methyl-3-ethenyl benzene and at least 95 weight percent 1-methyl-4-ethenyl benzene; and (b) 80 to 20 weight percent poly(2,6-dimethyl-1,4-phenylene oxide) resin having a molecular weight of about 50,000.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-17 | 1985-02-16 | 1985-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-17 | 1989-02-16 | 1989-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-17 | 1993-02-16 | 1993-08-18 | $7700.00 | Window Closed / Lapsed |