1. Butyraldehyde 1,2 propanediol acetal was synthesized by using stannous chloride as catalyst.

2. The latest technical advance of 1, 3 - propanediol for PTT raw materials production technique were introduced emphatically.

3. Pyruvaldehyde was synthesized with acetone or 1,2 propanediol as starting material respectively.

4. The catalyst conditions of 1,3 - propanediol were researched, such as main catalyst, accelerant, solvent, etal.

5. Under suitable conditions, the conversion on 1, 2 - propanediol asas % and the selectivity on acetone aldehyde %.

6. Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol.

7. Polyurethane foam wastes were recycled by alcoholysis with 1, 2 - propanediol . Polyol and amine compound were gained.

8. A study was made on the application of dimethyl silicone oil, propanetriol and 1,2 propanediol to decrease the modulus of MVQ vulcanizate.

9. The cross - linking agent is formaldehyde, glutaraldehyde, glycol diglycidyl ether , propanediol diglycidyl ether, or butanediol diglycidyl ether.

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10. Under suitable conditions, the conversion on 1 , 2 - propanediol and the selectivity on acetone aldehyde is 69 %.

11. In this paper , acetalization of 3 - bromo - propanal and 2 - alkyl - 1,3 - propanediol by using p - toluenesulfonic acid monohydrate (Ts OH) as catalyst was studied .

12. In this paper the chemistry of hydroformylation of 1, 3 - propanediol from ethylene oxide was summarized.

13. The promotion action of ionic liquid as an accelerant in synthesizing benzaldehyde ethanediol acetal and benzaldehyde propanediol acetal was studied.