LAMINATED GLASS - ZEON CORP

Title:

LAMINATED GLASS

Document Type and Number:

WIPO Patent Application WO/2018/116997

Kind Code:

A1

Abstract:

Provided is a lightweight laminated glass which maintains the stiffness thereof, has a reduced average density, also maintains the properties thereof, including impact resistance, heat resistance, light resistance and moisture resistance, and is useful as a material for an automotive window and the like. The laminated glass according to the present invention comprises multiple glass plates which are bonded together and are integrated with each other with an intermediate film [J] intercalated therebetween, wherein (i) the average density of the combined glass at a temperature of 25ºC is 1.2 to 1.5 g/cm3, (ii) the intermediate film [J] has a layered structure which is composed of at least two adhesive agent layers [G] each formed from an adhesive agent containing, as the main component, a thermoplastic elastomer [F] having an alkoxy silyl group and at least one rigid resin layer [H] arranged between the two adhesive agent layers [G], (iii) the storage elastic modulus of the rigid resin layer [H] is higher than that of the adhesive agent layers [G], and (iv) the value of the storage elastic modulus of the intermediate layer [J], which is calculated in accordance with formula 1 or is actually measured, is 2.0 × 108 to 1.0 × 109 Pa at a temperature of -20ºC and 1.0 × 108 to 8.0 × 108 Pa at a temperature of 40ºC: G' = (Σiti)/(Σi(ti/G'i) (Formula 1) (In Formula 1, G' represents a calculated value of the storage elastic modulus of the intermediate film; G'i represents the storage elastic modulus of a ith layer in the intermediate layer; ti represents the thickness of the ith layer; and Σi represents the sum total of the numerical values for the ith layer.)

Inventors:

KURIHARA RYUTA (JP)
KOHARA TEIJI (JP)

Application Number:

PCT/JP2017/045201

Publication Date:

June 28, 2018

Filing Date:

December 15, 2017

Export Citation:

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Assignee:

ZEON CORP (JP)

International Classes:

C03C27/12; B32B17/10; B60J1/00

Domestic Patent References:

WO2016171068A1	2016-10-27
WO2016158694A1	2016-10-06
WO2017094658A1	2017-06-08
WO2010102282A1	2010-09-10
WO2013181484A1	2013-12-05
WO2003018656A1	2003-03-06
WO2011096389A1	2011-08-11
WO2012043708A1	2012-04-05
WO2013176258A1	2013-11-28

Foreign References:

JP2016531067A	2016-10-06
JPS5673650A	1981-06-18
JPH05301322A	1993-11-16
US20080318063A1	2008-12-25
JP2002326847A	2002-11-12
JP2015000821A	2015-01-05
JP2015078090A	2015-04-23

Other References: