Title:
METHOD OF FORMING HYDROPHILIC POLYMER FILM
Document Type and Number:
Japanese Patent JP3866132
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of forming a polymer film on the surface of a coating objects such as a heat exchanger, etc., without causing, for example, lowering of functions such as corrosion prevention by generation of dew, and environmental problems such as waste solution treatment.
SOLUTION: In this method, a hydrophilic polyimide anticorrosive film is formed on the surface of the heat exchanger by vapor deposition polymerization reaction of a pyromellitic acid dianhydride (PMDA) which is introduced from the first gas inlet 2 and a diaminobenzoic acid (DBA) having a carboxy group, which is a hydrophilic group capable of existing independently from the vapor deposition polymerization reaction, in a molecular structure, which is introduced from the second gas inlet 3, as raw material monomers. This anticorrosive film can inhibit generation of dew due to its good hygroscopicity, and the degradation with time of the function of anticorrosion and the hygroscopicity can be prevented because of uniform existence of the hydrophilic groups in the film.
Inventors:
Irikura Steel
Yoshikazu Takahashi
Keiko Iida
Yoshikazu Takahashi
Keiko Iida
Application Number:
JP2002094511A
Publication Date:
January 10, 2007
Filing Date:
March 29, 2002
Export Citation:
Assignee:
ULVAC, Inc.
International Classes:
C08G73/10; F28F13/18; C08G85/00; F28F19/02; (IPC1-7): C08G85/00; C08G73/10; F28F13/18; F28F19/02
Domestic Patent References:
| JP2001238963A | ||||
| JP6273376A | ||||
| JP47026879B1 |
Attorney, Agent or Firm:
Kinichi Kitamura
Etsuo Machida
Masashi Yoshioka
Etsuo Machida
Masashi Yoshioka
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