US4048421A
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Method of anioning polymerization of unsaturated monomers
Assignee: University of Chemistry and Technology
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Filing: 1974-10-21
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Granted: 1977-09-13
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Expires: 1994-10-21
Abstract
Abstract A method for the anionic polymerization of unsaturated monomers involves effecting reaction in the presence of an organic derivative of a metal alumina hydride in an amount ranging from 0.01 to 5.0 mol percent based upon the amount of unsaturated monomer.
Inventors
- 👤 Jaroslav Kralicek
- 👤 Vladimir Kubanek
- 👤 Jaroslava Kondelikova
- 👤 Bohuslav Casensky
- 👤 Jiri Machacek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:11
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/52
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
129 words
Method for the anionic polymerization of an unsaturated monomer of the general formula CH.sub.2 ═ CXY wherein X and Y are selected from the group consisting of hydrogen, aryl, vinyl, --CN, --NO 2 , COOR and Cl, R being an alkyl group having from 1-6 carbon atoms which comprises adding to said monomer an organic derivative of a metal alumino hydride having the general formula MeAlH.sub.x (OR').sub.4-x wherein Me is a metal selected from the group consisting of the group I(a) and II(a) metals of the Mendeleef Periodic Table, x is an integer ranging from 1-2, R' is selected from the group consisting of (a) CH 2 CH 2 OR" and (b) CH 2 CH 2 N(R") 2 wherein R" is an alkyl group having from 1-4 carbon atoms.
Claim 2
Dependent Claim
129 words
Method for the anionic polymerization of an unsaturated monomer of the general formula CH.sub.2 ═ CXY wherein X and Y are selected from the group consisting of hydrogen, aryl, vinyl, --CN, --NO 2 , COOR and Cl, R being an alkyl group having from 1-6 carbon atoms which comprises adding to said monomer an organic derivative of a metal alumino hydride having the general formula MeAlH.sub.x (OR').sub.4-x wherein Me is a metal selected from the group consisting of the group I(a) and II(a) metals of the Mendeleef Periodic Table, x is an integer ranging from 1-2, R' is selected from the group consisting of (a) CH 2 CH 2 OR" and (b) CH 2 CH 2 N(R") 2 wherein R" is an alkyl group having from 1-4 carbon atoms.
Claim 3
Dependent Claim
29 words
Method in accordance with claim 1 wherein said alumina hydride is present in an amount ranging from 0.01 to 5.0 mol percent based upon the weight of unsaturated monomer.
Claim 4
Dependent Claim
19 words
Method in accordance with claim 1 wherein said hydride is NaAlH(OCH 2 CH 2 OCH 3 ) 3 .
Claim 5
Dependent Claim
21 words
Method in accordance with claim 1 wherein said hydride is NaAlH 2 (OCH 2 CH 2 OCH 3 ) 2 .
Claim 6
Dependent Claim
21 words
Method in accordance with claim 1 wherein said hydride is NaAlH[OCH 2 CH 2 N(CH 3 ) 2 ] 3 .
Claim 7
Dependent Claim
21 words
Method in accordance with claim 1 wherein said hydride is LiAlH(OCH 2 CH 2 OC 2 H 5 ) 3 .
Claim 8
Dependent Claim
23 words
Method in accordance with claim 1 wherein said hydride is NaAlH 2 [OCH 2 CH 2 OCH(CH 3 ) 2 ] 2 .
Claim 9
Dependent Claim
11 words
Method in accordance with claim 4 wherein said monomer is styrene.
Claim 10
Dependent Claim
11 words
Method in accordance with claim 4 wherein said monomer is acrylonitrile.
Claim 11
Dependent Claim
16 words
Method in accordance with claim 4 wherein said monomer comprises a mixture of styrene and acrylonitrile.
Claim 12
Dependent Claim
21 words
Method in accordance with claim 4 wherein said monomer comprises a mixture of styrene and the glycidyl ester of methacrylic acid.
Claim 13
Dependent Claim
62 words
Method for the anionic polymerization of styrene which comprises adding thereto an organic derivative of a metallo aluminum hydride of the formula MeAlH.sub.x [OCH.sub.2 CH.sub.2 O(CH.sub.2).sub.y H].sub.4-x wherein Me is a metal selected from the group consisting of the Group I(a) and II(a) metals of the Mendeleef Periodic Table, x is an integer from 1-2 and y is an integer from 1-4.
Claim 14
Dependent Claim
62 words
Method for the anionic polymerization of styrene which comprises adding thereto an organic derivative of a metallo aluminum hydride of the formula MeAlH.sub.x [OCH.sub.2 CH.sub.2 O(CH.sub.2).sub.y H].sub.4-x wherein Me is a metal selected from the group consisting of the Group I(a) and II(a) metals of the Mendeleef Periodic Table, x is an integer from 1-2 and y is an integer from 1-4.
References Cited (Backward Citations)
US2870101A
Cited
GB920559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |