- Photopolymerization and photophysical properties of amine linked benzophenone photoinitiator for free radical polymerization
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Synthesis of amine linked type II photoinitiator (BPDEA) was achieved in high yields and photopolymerization of mono and multiacrylate monomers was performed with this photoinitiator in the absence of a coinitiator. BPDEA is more effective than benzophenone (BP) with the coinitiator (MDEA) system under inert atmosphere in photoinduced free radical polymerization of acrylates.
- Temel, Gokhan,Enginol, Burak,Aydin, Meral,Balta, Demet Karaca,Arsu, Nergis
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- METHODS OF MAKING BENZOPHENONYL(ALK)ACRYLIC ESTERS AND SUBSTITUTED BENZOPHENONYL(ALK)ACRYLIC ESTERS IN FLOW REACTORS
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A method of making a benzophenonyl (alk)acrylic ester comprising adding to a mixing chamber of a microflow reactor a benzophenone alcohol, a benzophenone alcohol or substituted benzophenone alcohol comprising at least one hydroxy moiety, one or more bases, a polar liquid, an (alk)acryloyl halide or 3-haloalkylcarboxyl halide, and an organic liquid that is immiscible with the polar liquid; and producing a product stream comprising one or more benzophenonyl (alk)acrylie esters and one or more salts of the one or more bases; wherein the product stream has an organic portion and a polar portion, the organic portion of the product stream comprising the benzophenonyl (alk)acrylic ester, unreacted benzophenone alcohol or substituted benzophenone alcohol, and organic byproducts in the product stream; and further wherein either (a) the organic liquid comprises a compound of Formula (I); or (b) the method further comprises adding a compound of Formula (I) to the product stream; or (c) the organic liquid comprises a compound of Formula (I) and the method further comprises adding a compound of Formula (I) to the product stream (I) wherein R1 is H or C1 to C4 alkyl; and R2 is C1 to C12 alkyl optionally interrupted by one or more O atoms.
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Page/Page column 30
(2019/01/08)
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- METHODS OF MAKING (ALK)ACRYLIC ESTERS IN FLOW REACTORS
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A method of making an (alk)acrylic ester in a microflow reactor.
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Page/Page column 26
(2017/09/15)
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- COPOLYMERIZABLE PHOTOINITIATORS
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Benzophenone derivatives of formula (I) in which X is O, S or NR3, and R3 is H or linear or branched C1-C10 alkyl; R1 is H or methyl, R2 is H, halogen, linear or branched C1-C10 alkoxy, linear or branched C1-C10 alkyl, linear or branched C1-C10 alkylthio or a group NR4R5, wherein R4 and R5 are independently linear or branched C1-C10 alkyl, can be used as copolymerizable photoinitiators and photocrosslinkers.
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(2015/07/02)
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- Preparation method of copolymerizable photoinitiators
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An intermediate for preparing (meth)acrylated photoinitiators according to Formula (I): wherein: R1 is selected from the group consisting of hydrogen and a methyl group; A represents a group comprising at least one photoinitiating moiety; L represents a n+o-valent linking group comprising at least one carbon atom; n and o each independently represent an integer from 1 to 4; p is equal to 0 or 1; X represents a group selected from the group consisting of Cl, Br, I and R2SO3; and R2 represents an optionally substituted group selected from the group consisting of an alkyl group, an alkenyl group, an alkynyl group, an alkaryl group , an aralkyl group, an aryl group and a heteroaryl group. A method for the preparation of (meth)acrylated photoinitiators by β-elimination of HX from the intermediate according to Formula (I) is also disclosed.
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Page/Page column 20
(2009/06/27)
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