Hyperbranched polymer, metal recovery agent, metal recovery method, and catalytic activity inhibitor
There is provided a hyper-branched polymer represented by the following formula (1) and having a weight-average molecular weight in a range of 1,000 to 1,000,000. In the formula (1), A 1 is a group containing an aromatic ring, A 2 is a group containing an amide group, A 3 is a group containing sulfur, R 0 is hydrogen or a substituted or unsubstituted hydrocarbon group having 1 to 10 carbon atoms, ml is in a range of 0.5 to 11, and n1 is in a range of 5 to 100.
1. A hyper-branched polymer represented by the following formula (1) and having a weight-average molecular weight in a range of 1,000 to 1,000,000:
wherein in the formula (1), A 1 is a group containing an aromatic ring, A 2 is a group containing an amide group, A 3 is a group containing sulfur, R 0 is hydrogen or a substituted or unsubstituted hydrocarbon group having 1 to 10 carbon atoms, ml is in a range of 0.5 to 11, and n1 is in a range of 5 to 100.
2. The hyper-branched polymer according to claim 1 , wherein in the formula (1), A 1 is a group represented by the following formula (2), and A 3 is a dithiocarbamate group.
3. The hyper-branched polymer according to claim 1 , wherein in the formula (1), A 2 is a group represented by the following formula (3):
in the formula (3), R 1 is a single bond or a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms, and R 2 and R 3 are each hydrogen or a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
4. The hyper-branched polymer according to claim 3 , wherein in the formula (3), R 1 is the single bond, R 2 is the hydrogen, and R 3 is an isopropyl group.
5. The hyper-branched polymer according to claim 1 , wherein in the formula (1), A 3 is a group represented by the following formula (4):
in the formula (4), R 4 and R 5 are each hydrogen or a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms.
6. The hyper-branched polymer according to claim 5 , wherein in the formula (4), R 4 and R 5 are each an ethyl group.
7. The hyper-branched polymer according to claim 1 , wherein in the formula (1), a ratio of a total molar number of the amide group contained in A 2 to a molar number of A 3 which is the group containing sulfur is in a range of not less than 0.5 to less than 1.5.
8. The hyper-branched polymer according to claim 1 , wherein in the formula (1), A 3 is a dithiocarbamate group; and
a ratio of a total molar number of the amide group contained in A 2 to a molar number of A 3 which is the group containing sulfur is in a range of 0.5 to 1.5.
9. The hyper-branched polymer according to claim 1 , wherein in the formula (1), R 0 is a vinyl group.
10. The hyper-branched polymer according to claim 1 , wherein the hyper-branched polymer is a mixture of a hyper-branched polymer in which the R 0 in the formula (1) is a vinyl group and a hyper-branched polymer in which the R 0 in the formula (1) is an ethyl group.
11. A metal recovery agent recovering a metal in a liquid in which the metal is dissolved, comprising the hyper-branched polymer as defined in claim 1 .
12. A metal-recovering method of recovering a metal in a liquid in which the metal is dissolved, the method comprising:
preparing a solution of a hyper-branched polymer by dissolving the hyper-branched polymer as defined in claim 1 in a solvent;
applying the solution of the hyper-branched polymer onto a substrate so as to form a hyper-branched polymer layer; and
causing the liquid to make contact with the hyper-branched polymer layer to thereby make the metal in the liquid to adsorb to the hyper-branched polymer layer and to recover the metal.
13. A catalytic activity inhibitor inhibiting catalytic activity of an electroless plating catalyst, the catalytic activity inhibitor comprising the hyper-branched polymer as defined in claim 1 .