Liquid photo initiating compound and uses of the same

Abstract

A liquid photo initiating compound and uses of the same are provided. The compound is represented by the following Formula I: in Formula I, R 1 and R 2 are independently H or C 1 -C 3 alkyl, and R 3 is H or methyl.

What is claimed is: 
     
       1. A liquid photo initiating compound, which is represented by the following Formula I: 
       
         
           
           
               
               
           
         
         wherein, in Formula I, R 1  and R 2  are independently H or C 1 -C 3  alkyl, and R 3  is H or methyl. 
       
     
     
       2. The compound of  claim 1 , wherein R 1  and R 2  are independently methyl, ethyl, n-propyl or isopropyl. 
     
     
       3. The compound of  claim 2 , which is represented by the following Formula Ia: 
       
         
           
           
               
               
           
         
       
     
     
       4. A method of initiating a chemical reaction by using the liquid photo initiating compound of  claim 1 . 
     
     
       5. The method of  claim 4 , wherein, in Formula I, R 1  and R 2  are independently methyl, ethyl, n-propyl or isopropyl. 
     
     
       6. The method of  claim 5 , wherein the liquid photo initiating compound is represented by the following Formula Ia: 
       
         
           
           
               
               
           
         
       
     
     
       7. A photopolymerizable composition, comprising:
 a first photoinitiator, which is the liquid photo initiating compound of  claim 1 ; 
 a photopolymerizable component; and 
 an optional solvent. 
 
     
     
       8. The photopolymerizable composition of  claim 7 , wherein, in Formula I, R 1  and R 2  are independently methyl, ethyl, n-propyl or isopropyl. 
     
     
       9. The photopolymerizable composition of  claim 8 , wherein the liquid photo initiating compound is represented by the following Formula Ia: 
       
         
           
           
               
               
           
         
       
     
     
       10. The photopolymerizable composition of  claim 7 , wherein the photopolymerizable component is an olefinic unsaturated monomer, an olefinic unsaturated oligomer, or a combination thereof. 
     
     
       11. The photopolymerizable composition of  claim 10 , wherein the photopolymerizable component is an acrylate-based monomer, an acrylate-based oligomer, or a combination thereof. 
     
     
       12. The photopolymerizable composition of  claim 7 , further comprising a second photoinitiator selected from the group consisting of acylphosphine oxides, 9,10-dialkyloxyanthracene, and combinations thereof. 
     
     
       13. The photopolymerizable composition of  claim 7 , further comprising a photosensitizer selected from the group consisting of benzophenones, thioxanthones, Michler's ketones, anthraquinone, and combinations thereof. 
     
     
       14. The photopolymerizable composition of  claim 7 , further comprising an additive selected from the group consisting of pigments, amine synergists, and combinations thereof. 
     
     
       15. The photopolymerizable composition of  claim 7 , wherein the content of the first photoinitiator ranges from 0.1 wt % to 15 wt % based on the total weight of the photopolymerizable composition.