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Title:
METHOD FOR PRODUCING POLY(VINYL ACETAL) RESIN FILM CONTAINING PLASTICIZER ABSORBED THEREIN
Document Type and Number:
WIPO Patent Application WO/2020/067082
Kind Code:
A1
Abstract:
The present invention relates to a method for producing a poly(vinyl acetal) resin film containing a plasticizer absorbed therein, the method including a contacting step in which a plasticizer solution is brought into contact with a poly(vinyl acetal) resin film and a heating step in which the poly(vinyl acetal) resin film that has been contacted with the plasticizer solution is heated, wherein the poly(vinyl acetal) resin film before the contacting step has a plasticizer content of 0-20 mass% with respect to the total mass of the poly(vinyl acetal) resin film.

Inventors:
ISOUE KOICHIRO (JP)
Application Number:
PCT/JP2019/037439
Publication Date:
April 02, 2020
Filing Date:
September 25, 2019
Export Citation:
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Assignee:
KURARAY CO (JP)
International Classes:
C08J7/02; B32B27/22; B32B27/30; C03C27/12; C08J5/18
Domestic Patent References:
WO2018181386A12018-10-04
WO2004063231A12004-07-29
WO2003020776A12003-03-13
Foreign References:
JP2017021527A2017-01-26
JPS58145645A1983-08-30
JPS57209861A1982-12-23
JPS4216319B11967-09-04
JPH06926A1994-01-11
JP2015147724A2015-08-20
JP2015196612A2015-11-09
JP2011515315A2011-05-19
JPH06328625A1994-11-29
JP2015147725A2015-08-20
EP1527107B12007-06-13
EP1606325A12005-12-21
EP1235683B12003-08-20
Other References:
See also references of EP 3858901A4
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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