1. The sulfonation degree and molecular weight of GCL1 was found increased as compared with that of original lignosulfonate by the method of infrared spectrum analysis and gel chromatography.

2. The sulfonation of highly crosslinked macroporous styrene-divinylbenzene copolymers (60% DVB) by microwave heating was studied. The high power set and intermittent heating mode was adopted.

3. In the reaction of sulfonation, the azeotropic water removing, sulfuric acid was used as sulfonating agent.

4. The production of SO3 sulfonation is in common present a problem, that is coking disposal and demarcate of the sulfonator.

5. Advances in applications and technology for sulfonation using sulfur trioxide in manufacturing dye intermediates are reviewed.

6. The influence of sulfonation degree and plasticizer to the ionic conduction of the systems was examined.

7. The sulfonation degree and ion - exchange capacity ( IEC value) were determined with titrimetry, and FT - IR was used to characterize the structure of cross - linked ionic polymer.

8. The interaction between zinc phthalocyanines with different sulfonation degree and three types of micelles were investigated by absorption and fluorescence spectra.

9. The aromaticity of solvent oil in the sulfonation reaction was investigated.

10. The developement of the sulfonation process of anthraquinone by oleum was reviewed with emphasis on the removing techniques of mercury.

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11. Starting from hydroquinone, sodium 2, 5 -dihydroxy-4 - dodecylbenzene sulphonate was prepared by acylation, reduction and sulfonation in sequence. The reaction conditions were researched.

12. The influences of mole ratios of the reactants, concentration of sulfuric acid, sulfonation temperature and catalyst on reaction are discussed.

13. Sodium gualenate was prepared from guaiazulene by using dioxane sulfur trioxide(D. S. agent ) as sulfonation agent in yield of 71% with 99.5% purity.

14. METHODS Cefsulodin was prepared, taking phenylacetic acid as the starting material, followed by sulfonation, resolution, acylation, amidation and substitution, in 5 steps totally.

15. There are three methods to perform cross-linking. These are sulfonation of a cross-linked polymer, cross- linking of a sulfonated polymer, and cross-linking of a polymer blending system.

16. A new method to synthesize sodium dioleyl sulfosuccinate by esterification and sulfonation without adding any extra phase catalyst in nitrogen atmosphere was developed.

17. The water reducing agent of cement was prepared via sulfonation of semi - chemical pulping black liquor.

18. The PS water reducing agent, which is very effective for concrete, has been made from waste poly styrene(WPS) by sulfuric acid of fuming sulfuric acid sulfonation process.

19. With VPO, NMR, IR, the number average molecular of polyether and sulfonation degree of sulfonated polyether were characterized.

20. Introduces the research of synthesis alkanolamide sulfosuccinic acid monoester from refined corn oil by methyl-esterification, amidation, esterification and sulfonation.