Redox initiated cationic polymerization: Silane-N-aryl heteroaromatic onium salt redox couples

2010 ◽  
Vol 48 (20) ◽  
pp. 4484-4495 ◽  
Author(s):  
James V. Crivello ◽  
Julia L. Lee
Keyword(s):  
Cationic Polymerization ◽  
Onium Salt ◽  
Redox Couples

Water-developable photoresists employing onium salt photoinitiators

1995 ◽  
Vol 7 (4) ◽  
pp. 503-515 ◽  
Author(s):  
Keith Davidson ◽  
Philip C Hadley
Keyword(s):  
Cationic Polymerization ◽  
Glycidyl Methacrylate ◽  
Radical Copolymerization ◽  
Water Soluble ◽  
Cross Linking ◽  
Aqueous Systems ◽  
Onium Salt ◽  
Water Dispersible ◽  
Onium Salts ◽  
Photoacid Generator

Aromatic onium salts are known compounds with well understood photoactivity. Their use as acid-generating species has, in the last few years, improved the performance of photoresists, particularly for microelectronics applications. There has, however, been little research dedicated to the use of these photoinitators in aqueousrdevelopable resists. This work investigates the feasibility of employing onium salts in the formulation of resists suitable for aqueous development. The ability of the onium salts to photoinitiate the cationic polymerization or cross-linking of epoxide residues was exploited using water-soluble or water-dispersible copolymers containing glycidyl methacrylate (GMA). The comonomers included N-vinyl pyrrolidinone (NVP), NN-dimethylacrylamide (DMAc) and 2-hydroxyethyI methacrylate (HEMA). Various copolymers were prepared by radical copolymerization to low conversion, typically in chloroform. Several onium salts were prepared by literature methods and their efficiency examined using a model copolymer. The photoacid generator (PAG) that performed best was then used in the examination of the aqueous systems.

A Dithienothiophene Derivative as a Long-Wavelength Photosensitizer for Onium Salt Photoinitiated Cationic Polymerization

2008 ◽  
Vol 41 (10) ◽  
pp. 3468-3471 ◽  
Author(s):  
Binnur Aydogan ◽  
Ali Senol Gundogan ◽  
Turan Ozturk ◽  
Yusuf Yagci
Keyword(s):  
Cationic Polymerization ◽  
Long Wavelength ◽  
Onium Salt

Highly Conjugated Isoindogo and Quinoxaline Dyes as a Sunlight Photosensitizer for Onium Salt Photoinitiated Cationic Polymerization of Epoxy Resins

2021 ◽  
Author(s):  
Bahar Tosun Ercan ◽  
Sirin Siyahjani Gultekin ◽  
Tamer Yesil ◽  
Haluk Dincalp ◽  
Sermet Koyuncu ◽  
...  
Keyword(s):  
Cationic Polymerization ◽  
Epoxy Resins ◽  
Onium Salt

Epoxy-titania composites of cationic polymerization: synthesis conditions and properties

2015 ◽  
Vol 37 (4) ◽  
pp. 402-407
Author(s):  
S.V. Zhil’tsova ◽  
◽  
V.M. Mikhal’chuk ◽  
N.G. Leonova ◽  
R.I. Lyga ◽  
...  
Keyword(s):  
Cationic Polymerization ◽  
Synthesis Conditions
Sign in / Sign up

Export Citation Format

Share Document