I 1111111111111111 1111111111 11111 111111111111111 IIIII IIIII lll111111111111111  US010031416B2  c12)  United States Patent  Enomoto  (IO)  Patent No.:  US 10,031,416 B2  (45)  Date of Patent:  Jul. 24, 2018  (54)  REAGENT FOR ENHANCING GENERATION  OF CHEMICAL SPECIES  (71)  Applicant:  TOYO GOSEI CO., LTD.,  Ichikawa-shi, Chiba (JP)  (72)  Inventor:  Satoshi Enomoto,  Ichikawa (JP)  (73)  Assignees:  Toyo Gosei Co., Ltd.,  Ichikawa-Shi,  Chiba (JP);  Osaka University,  Suita-Shi, Osaka (JP)  ( *)  Notice:  Subject to any disclaimer, the term of this  patent is extended or adjusted under 35  U.S.C. 154(b) by  O  days.  (21)  Appl. No.:  14/909,051  (22)  PCT Filed:  Aug. 7, 2014  (65)  Prior Publication Data  Related U.S. Application Data  (60)  Provisional application No. 61/863,354, filed on Aug.  7, 2013.  G03F  71039  G06F  7120  G03F  71004  C08F  220128  G03F  7120  (2006.01)  (2006.01)  (2006.01)  (2006.01)  (2006.01)  A reagent that enhances acid generation of a photoacid  generator and composition containing such reagent is dis› closed.  19 Claims, 1 Drawing Sheet  Thevenet et al.  "An  efficient photoinduced deprotection of aromatic  acetals and ketals", Helvet. Chim. Acta., vol. 94 pp. 331-346  (2011).*  OTHER PUBLICATIONS  FOREIGN PATENT DOCUMENTS  3,503,993 A  *  3/1970 Blume  C07D 319/06  549/274  3,622,848 A  *  11/1971 Hendrix ................... H01G4/18  264/479  U.S. PATENT DOCUMENTS  (56)  References Cited  (51)  Int. Cl.  (57)  ABSTRACT  CN  102803304 A  11/2012  EP  2526125 Al  11/2012  (Continued)  (Continued)  (Continued)  Primary Examiner  - Martin J Angebranndt  (74)  Attorney, Agent, or Firm  - TraskBritt, P.C.  (58)  Field of Classification Search  None  See application file for complete search history.  (52)  U.S. Cl.  CPC ..........  G03F  710045  (2013.01);  C08F  220128  (2013.01);  G03F  710397  (2013.01);  G03F  71203  (2013.01);  G03F  712022  (2013.01);  C08F 2220/283  (2013.01)  US 2016/0187773 Al  Jun. 30, 2016  PCT Pub. Date:  Feb. 12, 2015  (87)  PCT Pub. No.:  WO2015/019616  (86)  PCT No.:  PCT/JP2014/004119  § 371 (c)(l),  (2) Date:  Jan.29, 2016  Lthogrnp-h1c c~po5urt: 