Abstract: The present invention provides modified multifunctional thiol-ene monomers wherein one or more thiols are reacted with a Michael addition reactive double bond compound. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers including the modified multifunctional thiols. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers and Michael addition reactive double bond molecules and a Michael catalyst. The formulations of the present invention can be photocured to make films or coatings. In a further disclosure, the formulations, including those comprised of unmodified multifunctional thiols and multifunctional enes, are photocured to form films applied to non-flexible or flexible polymer or non-polymer substrates suitable for food packaging, electronic products, optical products and other applications and free-standing films.

Abstract: Benzophenone/thioxanthone derivatives useful as photoinitiators are provided as well as photopolymerizable compositions comprising the benzophenone/thioxanthone derivatives.

Abstract: The present invention provides modified multifunctional thiol-ene monomers wherein one or more thiols are reacted with a Michael addition reactive double bond compound. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers including the modified multifunctional thiols. The present invention further discloses photocurable thiol-ene formulations comprising thiol-ene monomers and Michael addition reactive double bond molecules and a Michael catalyst. The formulations of the present invention can be photocured to make films or coatings. In a further disclosure, the formulations, including those comprised of unmodified multifunctional thiols and multifunctional enes, are photocured to form films applied to non-flexible or flexible polymer or non-polymer substrates suitable for food packaging, electronic products, optical products and other applications and free-standing films.

Abstract: The present invention provides a method for rapidly curing wood putty utilizing frontal polymerization. The reaction is initiated with UV light, and a reaction front propagates through the putty, completing the cure in seconds. A depth of cure of more than 1 cm deep of the wood putty is rapidly achieved.

Abstract: Benzophenone/thioxanthone derivatives useful as photoinitiators are provided as well as photopolymerizable compositions comprising the benzophenone/thioxanthone derivatives.

Abstract: Aliphatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: Aliphatic maleimide compounds having at least one maleimide unit substituted with a functionalized aliphatic radical at the nitrogen atom are provided. The aliphatic radical can be a linear or branched C1 to C10 alkyl, such as methyl or ethyl. The aliphatic maleimide compounds are useful as photoinitiators. Polymerization of compositions that include the aliphatic maleimide compounds may be activated by radiation.

Abstract: Coinitiator systems for photopolymerization of photopolymerizable compounds containing olefinic unsaturation are described. Such systems comprise (A) either a combination of at least one coumarin photoinitiator and at least one coinitiator compound which is a hydrogen atom donating coinitiator or an electron donating coinitiator, or at least one coumarin photoinitiator having in its molecular structure at least one photosensitizing amino group; and (B) at least one compound containing at least one maleimide or maleic anhydride derivative. Photopolymerizable compositions which comprise, in addition to such a coinitiator system, at least one photopolymerizable compound containing olefinic unsaturation are also described.

Abstract: Photopolymerization compositions which include maleimides and processes using the same are disclosed. Polymerization of compositions which include maleimides in combination with a benzophenone compound/hydrogen atom donor sensitizer system may be activated by irradiating the composition with radiation.

Abstract: Aliphatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: Aliphatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: Biradical initiators and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: Aromatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: Aromatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation.

Abstract: Aliphatic maleimides and methods using the same are disclosed. Polymerization of compositions which include the compounds of the invention may be activated by irradiating the composition with radiation in the absence of a photoinitiator.

Abstract: The invention is directed to a coating system which is adaptable to being crosslinked subsequent to being embossed. The system comprises a linear polyurethane that contains sites of unsaturation only in its polymeric backbone and a photoinitiator. The polyurethane is produced by the reaction of a diisocyanate and an unsaturated polyester diol.

Abstract: The present invention discloses a method of photolytically developing a colored image on a cellulosic material. In this method, the material is contacted with a nitrogen containing polymer in solution and a mono-sulfonyl azide compound in solution. The sample is thereafter exposed to a UV-containing light source for an amount of time sufficient to develop a color thereon.

Abstract: The invention is directed to an embossed material and a method of producing such an embossed material by utilizing a coating system which is adaptable to being crosslinked subsequent to being embossed. The system comprises a linear polyurethane that contains sites of unsaturation only in its polymeric backbone and a photoinitiator. The polyurethane is produced by the reaction of a diisocyanate and an unsaturated polyester diol. The coating system is applied to a substrate, is embossed, and is irradiated to crosslink the polyurethane coating and permanently fix the embossed pattern.

Abstract: The present invention discloses a method of photolytically developing a colored image on a cellulosic material. In this method, the material is contacted with a nitrogen containing polymer in solution and a mono-sulfonyl azide compound in solution. The sample is thereafter exposed to a UV-containing light source for an amount of time sufficient to develop a color thereon.

Abstract: The present invention discloses a method of photolytically developing color on a polyamide textile material. The material is first contacted with an aminobenzenesulfonyl azide and then is exposed to a UV light source for an amount of time sufficient to develop a color thereon.