METHOD OF FORMING THIN TRANSPARENT FILM

Title:

METHOD OF FORMING THIN TRANSPARENT FILM

Document Type and Number:

Japanese Patent JPH01261464

Kind Code:

A

Abstract:

PURPOSE: To form a thin transparent film which undergoes little discoloration when thermally cured, does not suffer acceleration in discoloration even it has a high-temperature history, and is useful for forming a protective film or smooth layer for a colored resin film, by using a phenolic novolak and/or a cresol novolak having a low coloring effect as curing agent.

CONSTITUTION: A thin transparent film is obtained by dissolving a phenolic novolak glycidyl ether and/or a cresol novolak glycidyl ether and, as curing agent, a phenolic novolak and/or a cresol novolak in an organic solvent, forming a film from this solution, and thermally curing this film. Said novolak curing agent is such that a 40wt.% solution thereof in ethyl Cellosolve acetate has a spectral transmittance through an optical path of 10mm of at least 60%, 90% and 94% respectively at 500nm, 550nm and 600W700nm using ethyl Cellosolve acetate as reference. A thin film obtained by this technique undergoes little discoloration even when thermally cured and scarcely suffers acceleration in discoloration even it has a high-temperature history; therefore, it can give an excellent protective film or smooth layer which does not impair the spectral characteristics of a colored resin film.

More Like This:

JPS63248484	METHOD FOR LINING INNER SURFACE OF PIPE
JP2001098224	SILICA-BASED FILM, METHOD OF FORMING SILICA-BASED FILM, AND ELECTRONIC COMPONENT HAVING SILICA-BASED FILM
WO/2016/152118	COATED AL-CONTAINING FORMED METAL MATERIAL, COMPOSITE, AND METHOD FOR PRODUCING SAME

Inventors:

FUTAMURA NOBUYUKI
YODA SUMIO
MATSUYAMA SHIGERU
TOMITA YOSHIFUMI

Application Number:

JP8859488A

Publication Date:

October 18, 1989

Filing Date:

April 11, 1988

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NIPPON KAYAKU KK
HITACHI LTD

International Classes:

B05D7/24; C03C17/32; C03C17/34; C08G59/00; C08G59/62; C08L63/00; C09D163/00; (IPC1-7): B05D7/24; C03C17/32; C03C17/34; C08G59/62; C09D3/58

Domestic Patent References:

JPS6377921A

1988-04-08

Attorney, Agent or Firm:

Yoshio Kawaguchi (2 outside)

Previous Patent: DISAZO COMPOUND, ITS PRODUCTION AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR PREPARED BY USING SAME

Next Patent: ANTISTATIC COATING MATERIAL