| 1 | It can be used directly or after the skin moistening process. | |
| 2 | The method and the condition of separation epoxy ethane from dihydric alcohol are described. | |
| 3 | The condensation was carried out with an excess of glycol or of dicarboxylic acid. | |
| 4 | The polyester or copolyester can be converted into dimethyl terephthalate of binary acid and glycol by method of methanolysis. | |
| 5 | By using the method as the preparation method of the dibasic alcohol ester, the high-purity dibasic alcohol ester compound can be obtained. |
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