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Title:
POLYVINYL ACETAL RESIN FOR INTERLAYER FILM
Document Type and Number:
Japanese Patent JP2015067477
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a polyvinyl acetal resin for an interlayer film keeping optical characteristics free of damages, and having high adhesiveness and penetration resistance, even when used for a long period in a wet and humid circumstance, and to provide an interlayer film for a glass laminate made of the polyvinyl acetal resin for an interlayer film, and the glass laminate.SOLUTION: A polyvinyl acetal resin for an interlayer film to be used in an interlayer film for a glass laminate has an acetalization degree of 60-80 mol%, an acetyl group content of 10 mol% or less, an average degree of polymerization of 1,500-3,000, an RMS radius (nm) measured with GPC-MALLS and a gradient of a linear approximate straight line of 0.40 (nm/(g/mol)) or less in a range of an absolute molecular weight of a molar molecular weight (g/mol) of 5×10or more, and a radius of rotation of a molecule having the absolute molecular weight of 5×10of 75 nm or less.

Inventors:
YAMAGUCHI HIDEHIRO
RYO SHINRETSU
Application Number:
JP2013202427A
Publication Date:
April 13, 2015
Filing Date:
September 27, 2013
Export Citation:
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Assignee:
SEKISUI CHEMICAL CO LTD
International Classes:
C03C27/12; B32B17/10; B32B27/30; C08F16/38; C08L29/14
Domestic Patent References:
JP2013032264A2013-02-14
JP2013032261A2013-02-14
JP2013006730A2013-01-10
JP2000302490A2000-10-31
JP2005187226A2005-07-14
JPH05186250A1993-07-27
JP2012001397A2012-01-05
JP2011144084A2011-07-28
JP2007331959A2007-12-27
JP2000211952A2000-08-02
JP2001261384A2001-09-26
Foreign References:
WO2010008053A12010-01-21
Attorney, Agent or Firm:
Atomi International Patent Office



 
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