	US 7,611,817 B2
	Aromatic sulfonium salt compound, photo-acid generator comprising the same and photopolymerizable composition containing the same, resin composition for optical three-dimensional shaping, and method of optically forming three-dimensional shape
Tetsuyuki Nakayashiki, Tokyo (Japan); and Hiroyuki Tachikawa, Tokyo (Japan)
Assigned to Adeka Corporation, Tokyo (Japan)
Appl. No. 10/529,015 PCT Filed Sep. 25, 2003, PCT No. PCT/JP03/12226 § 371(c)(1), (2), (4) Date May 13, 2005, PCT Pub. No. WO2004/029037, PCT Pub. Date Apr. 08, 2004.
Claims priority of application No. 2002-279416 (JP), filed on Sep. 25, 2002; and application No. 2003-085426 (JP), filed on Mar. 26, 2003.
Prior Publication US 2006/0055088 A1, Mar. 16, 2006
Int. Cl. G03F 7/00 (2006.01); G03F 7/004 (2006.01)

U.S. Cl. 430—270.1 [430/905; 430/913; 430/914; 430/280.1; 430/281.1; 568/18]

10 Claims

1. An aromatic sulfonium salt compound expressed by a general formula (I),

wherein, R¹to R¹⁷are identical or different and are a group selected from the group consisting of hydrogen, halogen, nitro, hydroxyl, alkyl, alkoxy, acyl, phenoxy, ester, aryl, thioether, thiocarbonyl, sulfinyl, sulfonyl, amino, amide, imide, nitrile, phosphino, phospho, phosphoryl and fluoroalkyl groups of 1-8 carbon atoms,

wherein the moieties other than the functional groups of these groups can be saturated aliphatic hydrocarbon, unsaturated aliphatic hydrocarbon, alicyclic hydrocarbon, carbocyclic aromatic hydrocarbon or heterocyclic aromatic hydrocarbon of 1-12 carbon atoms, and R⁵and R⁶can be condensed together with to form a covalent bond, provided that R¹to R⁵are not all hydrogen at the same time, and that R⁶to R¹⁰are not all hydrogen at the same time, X is the same described above, and

wherein at least one of R¹to R¹⁷is acyl group having of the formula R—CO— or Ar—CO—, where

Ar is

and R is straight or branched alkyl group, or alicyclic hydrocarbon group, and R¹⁸to R⁶³are identical or different, respectively hydrogen. halogen, hydroxyl, alkyl or alkoxy.