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# United States Patent [19] 

# Ikkala et al. 

# [54] ELECTRICALLY CONDUCTING COMPOSITIONS 

[75] Inventors: Olli lkkala. Merikasannink:atu; Lars-Olof Pietila. Purismiehenkatu. both of Finland; Yong Cao. Goleta; Alejandro Andreatta, Santa Barbara. both of Calif. 

[73] Assignees: Uniax Corporation, Santa Barbara, Calif.; Neste Oy, Espoo. Finland 

[21] Appl. No.: 582,809 

[22] Filed: Jan. 4, 1996 

[63] Continuation-in-part of Ser. No. 549,557, Oct. 27, 1995, abandoned, which is a continuation of Ser. No. 115,536, Sep. 3, 1993, abandoned. 

[51] Int. Cl. 6 ....................................................... H0IB 1/12 

[52] U.S. Cl. .............................................................. 252/500 

[58] Field of Search ..................................... 252/500. 518. 252/519; 528/422 

## [56] References Cited 

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## Related U.S. Application Data 

## U.S. PPJENf DOCUMENfS 

## FOREIGN PATENT DOCUMENTS 

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# [111 Patent Number: 5,783,111 

# [451 Date of Patent: Jul. 21, 1998 

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Patent Abstracts of Japan, vol. 17, No. 124 (C-1035). Mar. 16. 1993 JP-A-04 304 233, Tomoegawa Paper, Oct. 27, 1992. 

Green, A.G.. and Woodhead, A.E. "Aniline-Black and Allied Compounds. Part 1". J. Chem. Soc .. vol. 101. pp. 1117 (1912). 

Koybayashi. et al. "Electrochemical Reactions ... of Polya› niline Film-Coated Electrodes". J. Electroanal. Chem. vol. 177, pp. 281-291 (1984). 

Chiang. J.C. and MacDiannid, A.G .• "Polyaniline: Protonic Acid Doping of the Emeraldine Form to the Metallic Regime". Synthetic Metals, vol. 13. pp. 193-205 (1986). Salaneck. W.R. et al. "A 1\vo-Dimensional-Surface State Diagram for Polyaniline". Synthetic Metals. vol. 13. pp. 291-296 (1986). 

Plastics Technology 37 (1991):9, pp. 19-20. 

Primary Examiner-Michael Lewis 

Assistant Examiner-Peter DiMauro 

Attorney, Agent, or Firm-Armstrong, Westerman Hattori, 

McLeland & Naughton 

## [57] ABSTRACT 

Compositions are disclosed comprising electrically conduct› ing polyaniline and particular substituted aromatic com› pounds that simultaneously form hydrogen bonds and ring› ring interactions with. respectively, the NH-groups and the six-membered rings of the conducting polyanilines. The present conducting polyaniline compositions show drasti› cally enhanced processibility and their blends with insulat› ing or semiconducting materials exhibit significantly improved electrical properties. 

US0057831 l 1A 

## OTHER PUBLICATIONS 

## 21 Claims, 2 Drawing Sheets 

