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1. US20060054185 - Method of removing acid component in deteriorated acetate film

Office
United States of America
Application Number 10485383
Application Date 15.01.2004
Publication Number 20060054185
Publication Date 16.03.2006
Grant Number 7144461
Grant Date 05.12.2006
Publication Kind B2
IPC
C23G 1/00
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
1Cleaning or pickling metallic material with solutions or molten salts
B01D 11/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
11Solvent extraction
02of solids
C08J 7/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
7Chemical treatment or coating of shaped articles made of macromolecular substances
C08J 7/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
7Chemical treatment or coating of shaped articles made of macromolecular substances
02with solvents, e.g. swelling agents
CPC
B01D 11/0203
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
11Solvent extraction
02of solids
0203with a supercritical fluid
Applicants Nihon University
Kokusai Microfilm Co., Inc.
Inventors Sawaguchi Takashi
Yano Shoichiro
Morimatsu Yoshitaka
Sakaki Mitsuru
Agents Wenderoth, Lind & Ponack, L.L.P.
Priority Data 2003123828 28.04.2003 JP
Title
(EN) Method of removing acid component in deteriorated acetate film
Abstract
(EN)

There is provided a method of removing acids from the surface and interior of an acetate film produced by deterioration during storage. Such methods are characterized by extracting and removing the acids from the surface and interior of the acetate film, and the extraction treatment includes solvent extraction or evacuation (heating). This method suppresses the deterioration process in the storage of the acetate film.


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EP2004702449This application is not viewable in PATENTSCOPE because the national phase entry has not been published yet or the national entry is issued from a country that does not share data with WIPO or there is a formatting issue or an unavailability of the application.