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1. O-nitrotoluene and sodium polysulfide were of first order. The ratio equations have been determined. respectively.

2. The production process and formula of polysulfide sealant were introduced, the application progress is reviewed also.

3. Polysulfide leaching has such advantages as elimination of the influence of CaS, speedy gold leaching and nontoalcity of reagents.

4. Epoxy resin is the common tackifier for polysulfide sealant. Adding epoxy resin into polysulfide sealant can exert an auxiliary effect on viscosity increasing.

5. A series of polysulfide based thio-polyurea was synthesized, which were based on isophorone diisocyanate, liquid polysulfide and 2,5-diamino-3,6-dimethylmercapto toluene.

6. A polysulfide rubber modified epoxy water-proof and corrosion protective coating has been developed, which is used for water-proofing and corrosion protection of metals and concrete.

7. The recent production status of liquid polysulfide rubber at home and abroad was reviewed.

8. Two-component polyurethane silicone rubber polysulfide rubber chloroprene rubber and epoxy resin sealant of this type are generally completed at room temperature vulcanization.

9. The mechanism of the reaction ofp-nitrotoluene with sodium polysulfide hasbeen studied with kinetic method.

10. Modified polysulfide sealants for insulating- gl ass are mainly made from modified polysulfide rubber, plasticizer[sentencedict.com/polysulfide.html], thickener and fi ller and it is a two-component sealant.

11. Epoxy resin toughened by liquid polysulfide rubber exhibits good anti-impact performance and anti-bend performance.

12. The results show that polysulfide charge, temperature and time at the temperature during cooking process had an obvious effect on the pulp yield, Kappa number and viscosity.

13. In aqueous ethanolic solution of sodium polysulfide and sodium hydroxide, p-nitrotoluene is converted top-amino-benzaldehyde. The mechanism of this reaction is still obscure.

14. As special function is required, the construction of polysulfide sealing compound turns into a key procedure in project of a sewage treatment plant.

15. The polysulfide solution is one of non cyanidation systems of gold leaching in which polysulfide ions are the main effective components.

16. The machine is a special equipment for extruding two-component polysulfide sealant and two-component copper silicon for manufacturing aluminum-frame type insulated glass.

17. Suitable as the crosslinking agent in polymers like: epoxy, phenolic, trimeric cyanamide, nylon, polyethene, polyacrylic acid, polyurethane, polysulfide rubber, acrylonitrile-butadiene rubber, etc.

18. This article introduced mainly the composition, the production process, the curing mechanism, the characteristics and the application situation of the polysulfide sealant.

19. The diseases were controlled mainly with chemical fungicide, such as calcium polysulfide, Bordeaux mixture, carbendazim and thiram.

20. This paper introduces the characteristic and test result of SF-9 anti-corrosive primer, XM-22B polysulfide sealant and HM501 surface protective sealing coating and analyses their mating solubility.

21. A series of UV and visibe spectra of aromatic nitro compounds reacting with sodium polysulfide were determined. The intermediates and mechanisms of these reactions were discussed.