Claims
- 1. A copolymer comprising at least one triazolinethione unit of the formula ##STR19## and copolymerizable comonomeric units, said copolymer being non-migratable and uncrosslinked, and at least 0.1 weight percent of said copolymer being capable of dissolving in dimethylformamide, dimethylacetamide, dimethyl sulfoxide, or N-methylpyrrolidone at 23.degree. C.
- 2. The copolymer according to claim 1 wherein said copolymerizable comonomer is selected from the group consisting of a diamine, diol, diester, diisocyanate, bis(azlactone), bis(epoxide), diacid, or diacid chloride.
- 3. The copolymer according to claim 1 wherein said copolymerizable comonomer is a diamine or diol.
- 4. A copolymer comprising at least one triazolinethione unit having the formula ##STR20## or its tautomeric form, and copolymerizable comonomeric units, said copolymer being non-migratable and uncrosslinked, and at least 0.1 weight percent of said copolymer being capable of dissolving in dimethylformamide, dimethylacetamide, dimethyl sulfoxide, or N-methylpyrrolidone at 23.degree. C.
- 5. The copolymer according to claim 4 wherein said copolymerizable comonomer is selected from the group consisting of a diamine, diol, diester, diisocyanate, bis(azlactone), bis(epoxide), diacid, and diacid chloride.
- 6. A copolymer comprising at least one triazolinethione unit of the formula ##STR21## and copolymerizable comonomeric units are derived from comonomers selected from the group consisting of diester, diisocyanate, bis(azlactone), bis(epoxide), diacid, or diacide chloride, said copolymer being non-migratable and uncrosslinked, and at least 0.1 weight percent of said copolymer being capable of dissolving in dimethylformamide, dimethylacetamide, dimethyl sulfoxide, and N-methylpyrrolidone at 23.degree. C.
- 7. A process for preparing a copolymer comprising the steps:
- (a) reacting a bis(hydrazide) compound with a bis(isothiocyanate) compound and a comonomer copolymerizable with at least one of said bis(hydrazide) compound or said bis(isothiocyanate) to provide a co(poly)acylthiosemicarbazide,
- (b) cyclodehydrating said copoly(acylthiosemicarbazide) by subjecting it to an elevated temperature in the presence of an aqueous alkaline solution to form a polyanion of a copoly(triazolinethione),
- (c) treating said polyanion of said copoly(triazolinethine) with aqueous acid solution to provide a copoly(triazolinethione), and
- (d) isolating the resulting copoly(triazolinethione), said copoly(triazolinethione) being non-migratable.
- 8. The process according to claim 7 wherein said copolymerizable comonomer is selected from the group consisting of a diamine, diol, diester, diisocyanate, bis(azlactone), bis(epoxide), diacid, and diacid chloride.
- 9. A process for preparing a copoly(triazolinethione) comprising the steps:
- (a) providing a copoly(acylthiosemicarbazide) having units of the formula ##STR22## (b) cyclodehydrating said copoly(acylthiosemicarbazide) by subjecting it to a temperature in the range of 60.degree.-150.degree. C. in the presence of an aqueous alkaline solution having a pH in the range of 8 to 13 to form a polyanion of a copoly(triazolinethione) having units of the formula ##STR23## wherein M is a monovalent ion and copolymerized comonomeric units, (c) treating said polyanion of said copoly(triazolinethione) with an aqueous acid solution having a pH of 6 or less to provide units of said copoly(triazolinethione) having the formula ##STR24## and copolymerized comonomeric units, (d) isolating said resulting copoly(triazolinethione), said copoly(triazolinethione) being non-migratable.
- 10. The process according to claim 9 wherein said copoly(acylthiosemicarbazide) is prepared by reacting a bis(hydrazide) compound with a bis(isothiocyanate) compound and a comonomer copolymerizable with at least one of said bis(hydrazide) compound or said bis(isothiocyanate) compound.
- 11. The process according to claim 10 wherein said copolymerizable comonomer is selected from the group consisting of a diamine, diol, diester, diisocyanate, bis(azlactone), bis(epoxide), diacid, and diacid chloride.
Parent Case Info
This is a division of application Ser. No. 721,317, filed Apr. 9, 1985, now U.S. Pat. No. 4,624,995.
US Referenced Citations (6)
Non-Patent Literature Citations (5)
Entry |
Simionescu et al., Acta Chim. Acad. Sci. Hung., 86, 459 (1975). |
Chem. Abstr., 84, 44710v (1976). |
Chem. Abstr., 94, 104319t (1981). |
Derwent 43394 D/24 AE (1980). |
M. I. Shtil'man et al., Polymer Sci. USSR, 10, 2827 (1969). |
Divisions (1)
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Number |
Date |
Country |
Parent |
721317 |
Apr 1985 |
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