US4207406A
Expired / Lapsed
US
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Process for preparing polyphenylene oxide copolymers
Assignee: General Electric Co
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Filing: 1978-05-09
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Granted: 1980-06-10
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Expires: 1998-05-09
Abstract
Abstract A process for preparing copolymers of polyphenylene oxide employing a manganese (II) chelate catalyst is disclosed as well as grafted copolymers thereof.
Inventors
- 👤 Walter K. Olander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44; C08F; C08F283/00; C08F283/06; C08F283/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
132 words
A process of preparing copolymers of polyphenylene oxides which comprises contacting a phenol having the formula: ##STR5## wherein R and R 1 are hydrocarbon radicals, with an α-alkenyl phenol of the formula: ##STR6## wherein R 2 is selected from alkyl having from 1 to 6 carbon atoms and vinyl, and R 3 is an unsaturated hydrocarbon radical containing at least one polymerizable double bond in the hydrocarbon chain in the presence of a manganese (II) chelate complex catalyst having the formula (L) x Mn wherein L is a ligand derived from an ω-hydroxyoxime, Mn is the transition metal manganese (II) and x is a positive number at least equal to about 0.5, a solvent, a base and an oxygen containing gas and thereafter recovering the polyphenylene oxide copolymer from the reaction mixture.
Claim 2
Dependent Claim
132 words
A process of preparing copolymers of polyphenylene oxides which comprises contacting a phenol having the formula: ##STR5## wherein R and R 1 are hydrocarbon radicals, with an α-alkenyl phenol of the formula: ##STR6## wherein R 2 is selected from alkyl having from 1 to 6 carbon atoms and vinyl, and R 3 is an unsaturated hydrocarbon radical containing at least one polymerizable double bond in the hydrocarbon chain in the presence of a manganese (II) chelate complex catalyst having the formula (L) x Mn wherein L is a ligand derived from an ω-hydroxyoxime, Mn is the transition metal manganese (II) and x is a positive number at least equal to about 0.5, a solvent, a base and an oxygen containing gas and thereafter recovering the polyphenylene oxide copolymer from the reaction mixture.
Claim 3
Dependent Claim
34 words
The process as claimed in claim 1 wherein the phenol having formula I comprises compounds in which R and R 1 are selected from alkyl containing from 1 to 6 carbon atoms and phenyl.
Claim 4
Dependent Claim
12 words
The process as claimed in claim 2 wherein said phenol is 2,6-xylenol.
Claim 5
Dependent Claim
65 words
The process as claimed in claim 1 wherein the α-alkenylphenol having formula II comprises compounds in which R 2 is methyl or vinyl and R 3 is an unsaturated hydrocarbon radical containing at least one polymerizable double bond in the hydrocarbon chain selected from allyl, vinyl and --CH 2 --CH 2 --CH═CH--CH 2 --) n --H wherein n is an integer from 1 to 100.
Claim 6
Dependent Claim
13 words
The process as claimed in claim 4 wherein said α-alkenylphenol is 2 -allyl-6-methylphenol.
Claim 7
Dependent Claim
12 words
The process as claimed in claim 4 wherein said α-alkenylphenol is 2-vinyl-6-methylphenol.
Claim 8
Dependent Claim
12 words
The process as claimed in claim 4 wherein said α-alkenylphenol is 2-vinyl-6-ethylphenol.
Claim 9
Dependent Claim
12 words
The process as claimed in claim 4 wherein said α-alkenylphenol is 2,6-divinylphenol.
Claim 10
Dependent Claim
17 words
The process as claimed in claim 1 wherein said manganese (II) chelate complex catalyst is benzoin oxime.
Claim 11
Dependent Claim
20 words
The process as claimed in claim 1 wherein 2,6-xylenol is copolymerized with 2-allyl-6-methylphenol in the presence of benzoin oxime catalyst.
Claim 12
Dependent Claim
26 words
The process as claimed in claim 1 further comprising the step of grafting onto the resulting polyphenylene oxide copolymer, polystyrene or butadiene and recovering grafted copolymer.
Claim 13
Dependent Claim
36 words
The process as claimed in claim 11 for the preparation of a polystyrene grafted polyphenylene oxide copolymer which comprises reacting the resulting polyphenylene oxide copolymer with styrene monomer in the presence of a free radical initiator.
Claim 14
Dependent Claim
38 words
The process as claimed in claim 11 for the preparation of a polybutadiene grafted polyphenylene oxide copolymer which comprises reacting the resulting polyphenylene oxide copolymer with butadiene monomer or polybutadiene in the presence of a free radical initiator.
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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) | 1983-06-10 | 1983-12-10 | 1984-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-10 | 1987-12-10 | 1988-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-10 | 1991-12-10 | 1992-06-10 | $7700.00 | Window Closed / Lapsed |