The present invention concerns type II photoinitiators for the free-radical crosslinking of silicone compositions, in particular acrylic silicone compositions. The present invention concerns a silicone composition C1 that can be crosslinked by exposure to radiation with a wavelength of between 300 and 450 nm, comprising: —at least one organopolysiloxane A comprising at least one methacrylate group bonded to a silicon atom, at least one organohydrogenopolysiloxane H comprising at least two, and preferably at least three hydrogen atoms each bonded to different silicon atoms, and —at least one free-radical photoinitiator P. The present invention also concerns the provision of a silicone composition that can be polymerized or crosslinked by free-radical process comprising a type II photoinitiator system suitable for crosslinking silicone compositions, in particular by exposure to radiation, and absorbing light radiation with a wavelength greater than 300 nm.

Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitiated methods for producing photoresist structures.

Latent photoinitiator compounds are described, as well as compositions containing such compounds and their uses in photoinitiated methods for producing photoresist structures.

An organic light emitting diode includes a light emitting layer that includes a light emitting material of the constitutional formula ##STR00001##
The structure is unitary, and the formula weight is determined, and the better solubility and film formation are provided, and the thin film status is stable; it possesses a very high decomposition temperature and a lower sublimation temperature, and is easy to sublime to be light emitting material of high purity, and can be applied for small molecule organic light emitting diode. In the method for manufacturing the light emitting material, p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile are employed to be starting materials, and an intermediate of the light emitting material is obtained with a series of simple reactions, and finally, the light emitting material is obtained with Ullmann reaction or Suzuki reaction, and these steps are simple and the production is high.

An organic light emitting diode includes a light emitting layer that includes a light emitting material of the constitutional formula ##STR00001##
The structure is unitary, and the formula weight is determined, and the better solubility and film formation are provided, and the thin film status is stable; it possesses a very high decomposition temperature and a lower sublimation temperature, and is easy to sublime to be light emitting material of high purity, and can be applied for small molecule organic light emitting diode. In the method for manufacturing the light emitting material, p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile are employed to be starting materials, and an intermediate of the light emitting material is obtained with a series of simple reactions, and finally, the light emitting material is obtained with Ullmann reaction or Suzuki reaction, and these steps are simple and the production is high.

Provided are: a radical polymerization initiator which has excellent sensitivity and solubility in water; a composition containing the same; a cured product of the composition; a method of producing the cured product; and a compound. The radical polymerization initiator contains a compound represented by Formula (A) below (wherein Z.sup.1 represents a direct bond or the like; Z.sup.2 represents >CR.sup.102.sub.2 or the like; R.sup.1 to R.sup.8 each represent a hydrogen atom or the like, or a group containing a salt-forming group, which is represented by Formula (B1) below (wherein L.sub.1 represents a direct bond or the like, B represents an acidic group salt or the like, b represents 1 to 10, and the asterisk (*) represents a binding site); at least one of R.sup.1 to R.sup.8 is the group containing a salt-forming group; R.sup.101 and the like each represent a hydrogen atom or the like; one or more hydrogen atoms in the alkyl group and the like used as R.sup.1 to R.sup.8 and the like are optionally substituted with an ethylenically unsaturated group or the like; one or more methylene groups in R.sup.1 to R.sup.8 and the like are optionally substituted with a double bond or the like; adjacent groups such as R.sup.1 and R.sup.2 are optionally bound together to form a ring and optionally form a fused ring with a benzene ring in Formula (A); and R′ represents a hydrogen atom or the like).

##STR00001##

Provided are: a radical polymerization initiator which has excellent sensitivity and solubility in water; a composition containing the same; a cured product of the composition; a method of producing the cured product; and a compound. The radical polymerization initiator contains a compound represented by Formula (A) below (wherein Z.sup.1 represents a direct bond or the like; Z.sup.2 represents >CR.sup.102.sub.2 or the like; R.sup.1 to R.sup.8 each represent a hydrogen atom or the like, or a group containing a salt-forming group, which is represented by Formula (B1) below (wherein L.sub.1 represents a direct bond or the like, B represents an acidic group salt or the like, b represents 1 to 10, and the asterisk (*) represents a binding site); at least one of R.sup.1 to R.sup.8 is the group containing a salt-forming group; R.sup.101 and the like each represent a hydrogen atom or the like; one or more hydrogen atoms in the alkyl group and the like used as R.sup.1 to R.sup.8 and the like are optionally substituted with an ethylenically unsaturated group or the like; one or more methylene groups in R.sup.1 to R.sup.8 and the like are optionally substituted with a double bond or the like; adjacent groups such as R.sup.1 and R.sup.2 are optionally bound together to form a ring and optionally form a fused ring with a benzene ring in Formula (A); and R′ represents a hydrogen atom or the like).

##STR00001##

This invention discloses a novel cationic photoinitiator and a preparation method and use thereof. The cationic photoinitiator has a structure as represented by general formula (I) below. It can match a longer absorption wavelength in the process of application and has an outstanding photosensitive property, and has characteristics of no proneness to migration and good yellowing resistance. ##STR00001##

This invention discloses a novel cationic photoinitiator and a preparation method and use thereof. The cationic photoinitiator has a structure as represented by general formula (I) below. It can match a longer absorption wavelength in the process of application and has an outstanding photosensitive property, and has characteristics of no proneness to migration and good yellowing resistance. ##STR00001##

A method for manufacturing a light emitting material of the constitutional formula ##STR00001##
is provided. The structure is unitary, and the formula weight is determined, and the better solubility and film formation are provided, and the thin film status is stable; it possesses a very high decomposition temperature and a lower sublimation temperature, and is easy to sublime to be light emitting material of high purity, and can be applied for small molecule organic light emitting diode. In the method for manufacturing the light emitting material, p-bromothiophenol and 4-Bromo-2-fluorobenzonitrile are employed to be starting materials, and an intermediate of the light emitting material is obtained with a series of simple reactions, and finally, the light emitting material is obtained with Ullmann reaction or Suzuki reaction, and these steps are simple and the production is high.