Patent · US Active

Film laminates having damping properties containing a sub-layer made of plasticizer-containing polyvinyl (iso)acetal

US8920930B2 · kind B2 · utility

41Cited by

7References

15Claims

0Family size

Assignee

Kuraray Europe GmbH · DE

Inventors

Markus Meise · Ludwigshafen, DE
Jan Beekhuizen · Troisdorf, DE
Martin Steuer · Liederbach, DE
Uwe Keller · Avon, FR
Michael Frank · Neuss, DE

Key dates

Filing date	Jul 19, 2012
Grant date	Dec 30, 2014
Priority date	—
Expiry date	Jul 19, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31946
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Film laminates are formed from at least three layers A, B and C, each containing at least one plasticizer and at least one polyvinyl acetal, wherein two outer layers A and C each contain at least one identical or different polyvinyl acetal having a proportion of polyvinyl alcohol groups of 18.5 to 23% by weight, at least one inner layer B contains a polyvinyl acetal having a proportion of polyvinyl alcohol groups of 12 to 18% by weight, and at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal. The film laminates can be used for the production of glass/film laminate/glass composites for motor vehicles, aircraft, ships, architectural glazings, façade components, or for the production of photovoltaic modules.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.