Claims
- 1. The process of polymerizing an alkali metal salt of the compounds selected from: ##STR18## wherein A' is an ethylenically unsaturated substituent, R is a resonance stabilized group, L' is an optional linking group, X is hydrogen, ammonium or metal, Z represents the atoms and bonds necessary to complete a tetrazole ring structure and E is a hydrogen, alkyl or aryl non-functional in polymerization which comprises reacting said salt in an aqueous medium in the presence of a tetra-alkylated azo-bis-acetonitrile catalyst at elevated temperature under deaerated conditions.
- 2. The process of claim 1 wherein said compounds are selected from ##STR19## ##STR20## wherein b may be 0 or 1, said tetra-alkylated azo-bis-acetonitrile catalyst is 2,2'-azo-bis-(2-methylpropionitrile) and said elevated temperature is in the range of about 50.degree. to 80.degree. C.
- 3. The process of claim 2 wherein R is phenyl and b is selected from zero and one.
- 4. The process of claim 2 wherein the salt of 1-(p-vinylphenyl)-1,2,3,4-tetrazole-5-thiol is polymerized under deaerated conditions with heating to yield poly[1-(p-vinylphenyl)-1,2,3,4-tetrazole-5-thiol].
- 5. The process of claim 2 wherein the salt of 1-(p-vinylbenzyl)-1,2,3,4-tetrazole-5-thiol is polymerized under deaerated conditions with heating to yield poly[1-(p-vinylbenzyl)-1,2,3,4-tetrazole-5-thiol].
- 6. The process of claim 2 wherein the salt of 1-(m-acrylamidophenyl)-1,2,3,4-tetrazole-5-thiol is polymerized under deaerated conditions with heating to yield poly[1-(m-acrylamidophenyl)-1,2,3,4-tetrazole-5-thiol].
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS
This is a continuation-in-part of U.S. application Ser. No. 520,982 filed Nov. 5, 1974 which is a continuation-in-part of U.S. application Ser. No. 429,928 filed Jan. 2, 1974 and now abandoned.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
2832756 |
Melamed |
Apr 1958 |
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3260748 |
Nelson, Jr. |
Jul 1966 |
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Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
520982 |
Nov 1974 |
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Parent |
429928 |
Jan 1974 |
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