Title:
PHENOLIC NOVOLAKS AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2003/042267
Kind Code:
A1
Abstract:
A process for production of phenolic novolaks which comprises the step of conducting heterogeneous reaction of a phenol with 0.40 to 0.93 mol of an aldehyde per mol of the phenol in the presence of at least 25 parts by mass of a phosphoric acid per 100 parts by mass of the phenol. This process can give in high yield phenolic novolaks controlled in the contents of monomeric and dimeric phenols and in polydispersity.
Inventors:
INATOMI SHIGEKI (JP)
TANOUE NOBORU (JP)
TANOUE NOBORU (JP)
Application Number:
PCT/JP2002/011924
Publication Date:
May 22, 2003
Filing Date:
November 15, 2002
Export Citation:
Assignee:
ASAHI ORGANIC CHEM IND (JP)
INATOMI SHIGEKI (JP)
TANOUE NOBORU (JP)
INATOMI SHIGEKI (JP)
TANOUE NOBORU (JP)
International Classes:
C08G8/10; C08G8/28; (IPC1-7): C08G8/04
Foreign References:
| JPH10158352A | 1998-06-16 | |||
| JP2001172348A | 2001-06-26 | |||
| JPH0649159A | 1994-02-22 | |||
| JPS63275620A | 1988-11-14 | |||
| JPS62119220A | 1987-05-30 | |||
| JPH0270717A | 1990-03-09 | |||
| JP2002105157A | 2002-04-10 | |||
| JP2002128849A | 2002-05-09 | |||
| JP2002249532A | 2002-09-06 | |||
| JP2002194041A | 2002-07-10 |
Other References:
See also references of EP 1445268A4
Attorney, Agent or Firm:
Watanabe, Keisuke (Sanshin Bldg. 4-1, Yurakucho 1-chom, Chiyoda-ku Tokyo, JP)
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