The object of the present invention is to provide a polymer capable of being insolubilized at a low temperature in a short time, having a high hole injecting and transporting ability and a high durability, and a composition for organic electroluminescent element comprising the polymer. The polymer of the present invention comprises a specific crosslinkable group.

The object of the present invention is to provide a polymer capable of being insolubilized at a low temperature in a short time, having a high hole injecting and transporting ability and a high durability, and a composition for organic electroluminescent element comprising the polymer. The polymer of the present invention comprises a specific crosslinkable group.

The present invention concerns a method for preparing an oxysulphide and fluorinated derivative of formula (III) Ea-SO.sub.3R (III) that comprises bringing a compound of formula (II) Ea-SOOR (II)Ea representing the fluorine atom or a group having 1 to 10 carbon atoms chosen from the fluoroalkyls, the perfluoroalkyls and the fluoroalkenyls; andR representing hydrogen, a monovalent cation or an alkyl group; into contact, in the presence of a polar aprotic organic solvent, with an oxidising agent.

The present invention concerns a method for preparing an oxysulphide and fluorinated derivative of formula (III) Ea-SO.sub.3R (III) that comprises bringing a compound of formula (II) Ea-SOOR (II)Ea representing the fluorine atom or a group having 1 to 10 carbon atoms chosen from the fluoroalkyls, the perfluoroalkyls and the fluoroalkenyls; andR representing hydrogen, a monovalent cation or an alkyl group; into contact, in the presence of a polar aprotic organic solvent, with an oxidising agent.

The high-yield circular production method of taurine includes the following steps: S1, ethylene oxide reacts with sodium bisulfite solution to generate sodium hydroxyethyl sulfonate; S2, sodium hydroxyethyl sulfonate obtained in S1 is subjected to ammonolysis reaction in ammonia, and ammonia gas is recycled through flash evaporation upon completion of the reaction; S3, a reaction solution obtained after flash evaporation in S2 is sent to pass through an acidic cation exchange resin column, a material liquid containing taurine is collected, the inactivated resin column is subjected to regeneration with sulfur dioxide or carbon dioxide aqueous solution, and an eluent acquired during regeneration can be recycled directly or recycled after treated by sulfur dioxide; S4, the material liquid collected in S3 is subjected to post treatment to acquire taurine.

The present invention relates to a catalyst for oxidation reactions, particularly for oxidation of mercaptan dialkyldisulfides and/or dialklypolysulfides with oxygen to alkanesulfonic acids.

The present invention relates to a process for preparing alkanesulfonic acids from dialkyl disulfides with nitric acid and oxygen.

A photoacid-generating compound has the structure ##STR00001##
where R.sup.1, R.sup.2, R.sup.3, R.sup.4, Q, and X are defined herein. The photoacid-generating compound can be used as a component of a photoresist composition, or as a monomer incorporated into a polymer useful in a photoresist composition. The photoacid-generating compound provides a desired balance of solubility and line width roughness.

A photoacid-generating compound has the structure ##STR00001##
where R.sup.1, R.sup.2, R.sup.3, R.sup.4, Q, and X are defined herein. The photoacid-generating compound can be used as a component of a photoresist composition, or as a monomer incorporated into a polymer useful in a photoresist composition. The photoacid-generating compound provides a desired balance of solubility and line width roughness.

A photoacid-generating compound has the structure

##STR00001##

where R.sup.1, R.sup.2, R.sup.3, R.sup.4, Q, and X are defined herein. The photoacid-generating compound can be used as a component of a photoresist composition, or as a monomer incorporated into a polymer useful in a photoresist composition. The photoacid-generating compound provides a desired balance of solubility and line width roughness.