Title:
INTERMEDIATE FILM FOR LAMINATED GLASS AND LAMINATED GLASS
Document Type and Number:
Japanese Patent JP2018058765
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an intermediate film for laminated glass which, when used for constituting a laminated glass, enables the obtained laminated glass to have improved sound-insulating property in a high frequency range over a wide temperature range.SOLUTION: An intermediate film 1 for laminated glass related to the present invention has structure in which a first layer 2, a second layer 3 and a third layer 4 are laminated in this order. The first, second and third layers 2, 3 and 4 each contain polyvinylacetal resin and plasticizer. A content of hydroxyl group in the polyvinylacetal resin contained in the first layer 2 is lower than respective contents of hydroxyl groups in the polyvinylacetal resin contained in the second and third layers 3 and 4. A ratio of the thickness of the first layer 2 (T1) to the total thickness of the second and third layers 3 (T2+T3) is 0.14 or less.SELECTED DRAWING: Figure 1
Inventors:
MATSUDA SHOTA
SHIMAMOTO TOMOO
RYO SHINRETSU
KAJI KOHEI
IWAMOTO TATSUYA
SHIMAMOTO TOMOO
RYO SHINRETSU
KAJI KOHEI
IWAMOTO TATSUYA
Application Number:
JP2017235689A
Publication Date:
April 12, 2018
Filing Date:
December 08, 2017
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
C03C27/12; B32B27/30; B60J1/00; B60R13/08
Domestic Patent References:
| JPH06926A | 1994-01-11 | |||
| JP2007331964A | 2007-12-27 | |||
| JPH04254444A | 1992-09-09 | |||
| JPH05138840A | 1993-06-08 | |||
| JP5226153B2 | 2013-07-03 |
Foreign References:
| WO2009123186A1 | 2009-10-08 | |||
| WO2009093655A1 | 2009-07-30 |
Attorney, Agent or Firm:
Patent business corporation Miya saki, table of contents patent office
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