Method for forming bright coating film
A bright, film-coating technology, applied in coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve problems such as inapplicability of water-based primers, and achieve low environmental concerns, low energy costs, and good coating. Effect of film appearance
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manufacture example 1
[0214] Production example 1 Production of polypropylene AP-1
[0215] 110 ml of deionized water, 22.2 g of magnesium sulfate heptahydrate, and 18.2 g of sulfuric acid were added to a 1000 ml round-bottomed flask, and dissolved under stirring. 16.7 g of commercially available granulated montmorillonite was dispersed in this solution, and the temperature was raised to 100° C., followed by stirring for 2 hours. It was then cooled to room temperature, and the resulting slurry was filtered to recover a wet filter cake. In a 1000 ml round bottom flask, the recovered filter cake was slurried again with 500 ml of deionized water, and filtered. This operation was repeated 2 times. The finally obtained filter cake was dried overnight at 110° C. under a nitrogen atmosphere to obtain 13.3 g of chemically treated montmorillonite.
[0216] To 4.4 g of the obtained chemically treated montmorillonite, 20 ml of a toluene solution (0.4 mmol / ml) of triethylaluminum was added, followed by st...
manufacture example 2
[0219] Production example 2 Production of polypropylene AP-2 to AP-7
[0220] Polypropylenes AP-2 to 7 were produced in the same manner as in Production Example 1 except that the polymerization conditions were changed as shown in Table 1.
manufacture example 3
[0221] Production Example 3 Production of maleic anhydride-modified polypropylene APM-1
[0222]Into a glass flask equipped with a reflux condenser, a thermometer, and a stirrer, 400 g of polypropylene AP-1 obtained in Production Example 1 and 600 g of toluene were added, and the inside of the container was replaced with nitrogen, and the temperature was raised to 110°C. After the temperature was raised, 100 g of maleic anhydride was added, and 30 g of tert-butyl peroxyisopropyl monocarbonate (manufactured by NOF Corporation, PBI) was added, and stirring was continued at the same temperature for 7 hours to carry out the reaction. After the reaction, the system was cooled to around room temperature, acetone was added, and the precipitated polymer was separated by filtration. Repeated precipitation with acetone, separation by filtration, and washing of the finally obtained polymer with acetone. The polymer obtained after washing was dried under reduced pressure to obtain male...
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