Emulsion coagulant and tire puncture repair kit
View Patent ↗An object of the present invention is to provide an emulsion coagulant having excellent coagulation performance and a tire puncture repair kit that uses the emulsion coagulant. The emulsion coagulant of the present invention is an emulsion coagulant containing an α-starch and an anionic polyacrylamide; a molecular weight of the anionic polyacrylamide being from 500,000 to 2,000,000; and a mass ratio (WA:WB) of a content (WA) of the α-starch to a content (WB) of the anionic polyacrylamide being from 5:95 to 80:20.
1. An emulsion coagulant comprising an α-starch and an anionic polyacrylamide;
a molecular weight of the anionic polyacrylamide being from 500,000 to 2,000,000; and
a mass ratio (W A :W B ) of a content (W A ) of the α-starch to a content (W B ) of the anionic polyacrylamide being from 5:95 to 80:20.
2. The emulsion coagulant according to claim 1 , wherein an anionic functional group of the anionic polyacrylamide is a carboxylate group; and
a ratio of repeating units having the carboxylate group to all repeating units in the anionic polyacrylamide is from 20 to 70 mol %.
3. The emulsion coagulant according to claim 1 further comprising aluminum sulfate;
wherein the content of aluminum sulfate is not less than 1.0 parts by mass per total of 10 parts by mass of the α-starch and the anionic polyacrylamide.
4. The emulsion coagulant according to claim 1 , wherein the emulsion coagulant is an emulsion coagulant for coagulating a tire puncture repair liquid containing a natural rubber latex, a synthetic resin emulsion, and an antifreezing agent.
5. The emulsion coagulant according to claim 4 , wherein the antifreezing agent is at least one type of compound selected from the group consisting of ethylene glycol, propylene glycol, and diethylene glycol.
6. A tire puncture repair kit comprising the emulsion coagulant described in claim 1 and a tire puncture repair liquid.
7. The emulsion coagulant according to claim 2 further comprising aluminum sulfate;
wherein the content of aluminum sulfate is not less than 1.0 parts by mass per total of 10 parts by mass of the α-starch and the anionic polyacrylamide.
8. A tire puncture repair kit comprising the emulsion coagulant described in claim 2 and a tire puncture repair liquid.
9. A tire puncture repair kit comprising the emulsion coagulant described in claim 7 and a tire puncture repair liquid.