Patent · US Active

High-strength film laminates having layers of plasticizer-containing polyvinyl (N)acetal and plasticizer-containing polyvinyl (ISO)acetal

US8597792B2 · kind B2 · utility

54Cited by

4References

13Claims

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 3, 2013
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

The invention relates to film laminates, formed from at least three layers A, B and C, each layer containing at least one plasticizer and at least one polyvinyl acetal, wherein, at least one of the layers A, B or C contains at least one polyvinyl (iso)acetal having a mean degree of polymerization of less than 3000, 10 to 25% by weight of polyvinyl alcohol groups and a proportion 50 to 80% by weight of polyvinyl (iso)acetal groups, and wherein layer B has a plasticizer content of less than 32% by weight. 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.