Interlayer films for laminated glazing containing silica...

Details Interlayer films for laminated glazing containing silica... Interlayer films for laminated glazing containing silica...

2008-04-04

2011-10-18

Nakarani, D. S. (Department: 1787)

Stock material or miscellaneous articles

Composite

Of quartz or glass

C428S219000, C428S220000, C428S331000, C428S437000, C428S524000, C428S525000

Reexamination Certificate

active

08039112

ABSTRACT:
Interlayer films useful for laminated glass contain a polyvinyl acetal (A), at least on plasticizer (B), fumed silica (C) and at least one basic compound (D), wherein the difference of refractive index between fumed silica (C) and plasticized polyvinyl acetal (A+B) is 0.015 or less, and the weight ratio of C/(A+B) is 2.7-60/100.

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