Interlayer film for laminated glass and laminated glass

Details Interlayer film for laminated glass and laminated glass Interlayer film for laminated glass and laminated glass

2005-06-07

2005-06-07

Cheung, William K. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S394000, C428S330000, C428S339000, C428S332000, C428S436000, C428S437000

Reexamination Certificate

active

06903152

ABSTRACT:
The invention provides an interlayer film for a laminated glass and a laminated glass,which are protected against a slump in TL value through attenuation of said coincidence effect and adapted to display an outstanding sound insulation performance over a broad temperature range.An interlayer film for a laminated glass comprising a plasticizer and a polyacetal resin,which is a blend of a polyacetal resin having an average polymerization degree of 1,000 to 3,000 and a polyacetal resin having an average polymerization degree of 3,000 to 5,000, andwhich has an acetalization degree of 60 to 85 mol % and an acetyl group content of 8 to 30 mol %.An interlayer film for a laminated glasswhich shows a temperature dependence of loss tangentin which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

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