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

2010-11-19

2011-10-18

Cheung, William (Department: 1762)

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

08039536

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, and which 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 glass which shows a temperature dependence of loss tangent in which the lowest-temperature side maximum of loss tangent appears at 30° C. or lower when examined for dynamic viscoelasticity.

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Office Action on a counterpart JP Application No. 2007-289973, which was received on Jan. 19, 2010.
Office Action issued in counterpart EP Application No. 06024821.8, which was received May 31, 2010.
Extended European Search Report issued in counterpart EP Application No. 10011259.8, dated Jan. 18, 2011.

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